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Analysis of the State of the Fine-Dispersive Precipitations in the Structure of High Strength Steel Weldox 1300 by Means of Electron Diffraction

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Journal of Iron and Steel Research International 2011年第S1期18卷 135-142页

作者： Ozgowicz Wojciech Labisz Krzysztof Division of Constructional and special Materials Division of Materials Processing Technology Management and Computer Techniques in Materials ScienceInstitute of Engineering Materials and BiomaterialsSilesian University of TechnologyKonarskiego St.18A44-100 GliwicePoland

The paper deals with investigations concerning the structure and state of dispersive precipitations of the phases consolidating in the high-strength steel Weldox 1300 after its high temperature thermomechanical *** use of transmission technique of electron microscopy (TEM) mainly the microstructure and morphology of martensite was analysed,as well as the state of dispersive precipitations of carbides and nitrides resulting from microadditives of such alloys as Nb,V,Ti or B,introduced into the *** revealed both a fine lathed and twin structure of the matrix of martensite in the investigated *** means of the method of electron diffraction particles of secondary strengthening phases of the M(C,N) type of a nanocrystalline size could be identified,and also non-metallic oxide inclusions,affecting the mechanism of strengthening of the investigated steel.

关键词： weldox 1300 HSLA steel thermomechanical treatment martensitic steel structural steel

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Combined Measurement of the Higgs Boson Mass in pp Collisions at s=7 and 8 TeV with the ATLAS and CMS Experiments

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Physical Review Letters 2015年第19期114卷 191803-191803页

作者： G. Aad B. Abbott J. Abdallah O. Abdinov R. Aben M. Abolins O. S. AbouZeid H. Abramowicz H. Abreu R. Abreu Y. Abulaiti B. S. Acharya L. Adamczyk D. L. Adams J. Adelman S. Adomeit T. Adye A. A. Affolder T. Agatonovic-Jovin J. A. Aguilar-Saavedra S. P. Ahlen F. Ahmadov G. Aielli H. Akerstedt T. P. A. Åkesson G. Akimoto A. V. Akimov G. L. Alberghi J. Albert S. Albrand M. J. Alconada Verzini M. Aleksa I. N. Aleksandrov C. Alexa G. Alexander T. Alexopoulos M. Alhroob G. Alimonti L. Alio J. Alison S. P. Alkire B. M. M. Allbrooke P. P. Allport A. Aloisio A. Alonso F. Alonso C. Alpigiani A. Altheimer B. Alvarez Gonzalez D. Álvarez Piqueras M. G. Alviggi B. T. Amadio K. Amako Y. Amaral Coutinho C. Amelung D. Amidei S. P. Amor Dos Santos A. Amorim S. Amoroso N. Amram G. Amundsen C. Anastopoulos L. S. Ancu N. Andari T. Andeen C. F. Anders G. Anders J. K. Anders K. J. Anderson A. Andreazza V. Andrei S. Angelidakis I. Angelozzi P. Anger A. Angerami F. Anghinolfi A. V. Anisenkov N. Anjos A. Annovi M. Antonelli A. Antonov J. Antos F. Anulli M. Aoki L. Aperio Bella G. Arabidze Y. Arai J. P. Araque A. T. H. Arce F. A. Arduh J-F. Arguin S. Argyropoulos M. Arik A. J. Armbruster O. Arnaez V. Arnal H. Arnold M. Arratia O. Arslan A. Artamonov G. Artoni S. Asai N. Asbah A. Ashkenazi B. Åsman L. Asquith K. Assamagan R. Astalos M. Atkinson N. B. Atlay B. Auerbach K. Augsten M. Aurousseau G. Avolio B. Axen M. K. Ayoub G. Azuelos M. A. Baak A. E. Baas C. Bacci H. Bachacou K. Bachas M. Backes M. Backhaus E. Badescu P. Bagiacchi P. Bagnaia Y. Bai T. Bain J. T. Baines O. K. Baker P. Balek T. Balestri F. Balli E. Banas Sw. Banerjee A. A. E. Bannoura H. S. Bansil L. Barak S. P. Baranov E. L. Barberio D. Barberis M. Barbero T. Barillari M. Barisonzi T. Barklow N. Barlow S. L. Barnes B. M. Barnett R. M. Barnett Z. Barnovska A. Baroncelli G. Barone A. J. Barr F. Barreiro J. Barreiro Guimarães da Costa R. Bartoldus A. E. Barton P. Bartos A. Bassalat A. Basye R. L. Bates S. J. Batista J. R. Batley M. Battaglia M. Bauce F. Bauer H. S. Bawa J. B. Beach CPPM Aix-Marseille Université and CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman Oklahoma USA Institute of Physics Academia Sinica Taipei Taiwan Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan Nikhef National Institute for Subatomic Physics and University of Amsterdam Amsterdam Netherlands Department of Physics and Astronomy Michigan State University East Lansing Michigan USA Department of Physics University of Toronto Toronto Ontario Canada Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel Department of Physics Technion: Israel Institute of Technology Haifa Israel CERN Geneva Switzerland Department of Physics Stockholm University Sweden The Oskar Klein Centre Stockholm Sweden INFN Gruppo Collegato di Udine Sezione di Trieste Udine Italy ICTP Trieste Italy AGH University of Science and Technology Faculty of Physics and Applied Computer Science Krakow Poland Physics Department Brookhaven National Laboratory Upton New York USA Department of Physics Northern Illinois University DeKalb Illinois USA Fakultät für Physik Ludwig-Maximilians-Universität München München Germany Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Oliver Lodge Laboratory University of Liverpool Liverpool United Kingdom Institute of Physics University of Belgrade Belgrade Serbia Laboratorio de Instrumentacao e Fisica Experimental de Particulas-LIP Lisboa Portugal Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada (Spain) Portugal Department of Physics Boston University Boston Massachusetts USA Joint Institute for Nuclear Research JINR Dubna Dubna Russia INFN Sezione di Roma Tor Vergata Roma Italy Dipartimento di Fisica Università di Roma Tor Vergata Roma Italy Fysiska institutionen Lunds universitet Lund Sweden International Center for Elementary Particle Physics and Depart

A measurement of the Higgs boson mass is presented based on the combined data samples of the ATLAS and CMS experiments at the CERN LHC in the H→γγ and H→ZZ→4ℓ decay channels. The results are obtained from a simultaneous fit to the reconstructed invariant mass peaks in the two channels and for the two experiments. The measured masses from the individual channels and the two experiments are found to be consistent among themselves. The combined measured mass of the Higgs boson is mH=125.09±0.21 (stat)±0.11 (syst) GeV.

关键词： HIGGS bosons RESEARCH COLLISIONS (Nuclear physics) ATLAS (computer program language) REST mass (Relativity) BOSONS

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Detection of B-Mode Polarization in the Cosmic Microwave Background with Data from the South Pole Telescope

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Physical Review Letters 2013年第14期111卷 141301-141301页

作者： D. Hanson S. Hoover A. Crites P. A. R. Ade K. A. Aird J. E. Austermann J. A. Beall A. N. Bender B. A. Benson L. E. Bleem J. J. Bock J. E. Carlstrom C. L. Chang H. C. Chiang H-M. Cho A. Conley T. M. Crawford T. de Haan M. A. Dobbs W. Everett J. Gallicchio J. Gao E. M. George N. W. Halverson N. Harrington J. W. Henning G. C. Hilton G. P. Holder W. L. Holzapfel J. D. Hrubes N. Huang J. Hubmayr K. D. Irwin R. Keisler L. Knox A. T. Lee E. Leitch D. Li C. Liang D. Luong-Van G. Marsden J. J. McMahon J. Mehl S. S. Meyer L. Mocanu T. E. Montroy T. Natoli J. P. Nibarger V. Novosad S. Padin C. Pryke C. L. Reichardt J. E. Ruhl B. R. Saliwanchik J. T. Sayre K. K. Schaffer B. Schulz G. Smecher A. A. Stark K. T. Story C. Tucker K. Vanderlinde J. D. Vieira M. P. Viero G. Wang V. Yefremenko O. Zahn M. Zemcov Department of Physics McGill University Montreal Quebec H3A 2T8 Canada Kavli Institute for Cosmological Physics University of Chicago Chicago Illinois 60637 USA Enrico Fermi Institute University of Chicago Chicago Illinois 60637 USA Department of Astronomy and Astrophysics University of Chicago Chicago Illinois 60637 USA School of Physics and Astronomy Cardiff University Cardiff CF24 3YB United Kingdom University of Chicago Chicago Illinois 60637 USA Department of Astrophysical and Planetary Sciences CASA University of Colorado 389 UCB Boulder Colorado 80309 USA National Institute of Standards and Technology Boulder Colorado 80305 USA Department of Physics University of Chicago Chicago Illinois 60637 USA California Institute of Technology Pasadena California 91125 USA Jet Propulsion Laboratory Pasadena California 91109 USA High Energy Physics Division Argonne National Laboratory Argonne Illinois 60439 USA School of Mathematics Statistics and Computer Science University of KwaZulu-Natal Durban 4000 South Africa Department of Physics University of California Berkeley California 94720 USA Department of Physics University of Colorado Boulder Colorado 80309 USA Department of Physics University of California Davis California 95616 USA Physics Division Lawrence Berkeley National Laboratory Berkeley California 94720 USA Department of Physics and Astronomy University of British Columbia Vancouver British Columbia V6T 1Z1 Canada Department of Physics University of Michigan Ann Arbor Michigan 48109 USA Physics Department Case Western Reserve University Cleveland Ohio 44106 USA Materials Science Division Argonne National Laboratory Argonne Illinois 60439 USA Department of Physics University of Minnesota Minneapolis Minnesota 55455 USA Liberal Arts Department School of the Art Institute of Chicago Chicago Illinois 60603 USA Infrared Processing and Analysis Center California Institute of Technology JPL Pasadena California 91125 USA Ha

Gravitational lensing of the cosmic microwave background generates a curl pattern in the observed polarization. This “B-mode” signal provides a measure of the projected mass distribution over the entire observable Universe and also acts as a contaminant for the measurement of primordial gravity-wave signals. In this Letter we present the first detection of gravitational lensing B modes, using first-season data from the polarization-sensitive receiver on the South Pole Telescope (SPTpol). We construct a template for the lensing B-mode signal by combining E-mode polarization measured by SPTpol with estimates of the lensing potential from a Herschel-SPIRE map of the cosmic infrared background. We compare this template to the B modes measured directly by SPTpol, finding a nonzero correlation at 7.7σ significance. The correlation has an amplitude and scale dependence consistent with theoretical expectations, is robust with respect to analysis choices, and constitutes the first measurement of a powerful cosmological observable.

关键词： POLARIZATION (Nuclear physics) RESEARCH COSMIC background radiation GRAVITATIONAL lenses COSMOLOGY

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Analysis of the State of the Fine-Dispersive Precipitations in the Structure of High Strength Steel Weldox 1300 by Means of Electron Diffraction

Analysis of the State of the Fine-Dispersive Precipitations ...

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第六届国际低合金高强度钢会议

The paper deals with investigations concerning the structure and state of dispersive precipitations of the phases consolidating in the high-strength steel Weldox 1300 after its high temperature thermomechanical treatment. Making use of transmission technique of electron microscopy(TEM) mainly the microstructure and morphology of martensite was analysed,as well as the state of dispersive precipitations of carbides and nitrides resulting from microadditives of such alloys as Nb,V,Ti or B,introduced into the *** revealed both a fine lathed and twin structure of the matrix of martensite in the investigated *** means of the method of electron diffraction particles of secondary strengthening phases of the M(C,N) type of a nanocrystalline size could be identified,and also non-metallic oxide inclusions,affecting the mechanism of strengthening of the investigated steel.

关键词： weldox 1300 HSLA steel thermomechanical treatment martensitic steel structural steel

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Laser surface treatment of Mg-Al-Zn alloys

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Strojarstvo 2011年第1期53卷 5-10页

作者： Dobrzanski, Leszek Adam Tanski, Tomasz Malara, Szymon Domagala, Justyna Klimpel, Andrzej Division of Materials Processing Technology and Computer Techniques in Materials Science Institute of Engineering Materials and Biomaterials Silesian University of Technology ul. Konarskiego 18a 44-100 Gliwice Poland Welding Department Silesian University of Technology ul. Konarskiego 18a 44-100 Gliwice Poland

In this paper the structure and properties investigations results of the cast magnesium alloys in the as cast state, after heat treatment and laser surface treatment are presented. The aim of this work was to improve the surface layer properties of the Mg-Al-Zn cast magnesium alloys by melting and feeding of TiC, VC, WC, SiC, NbC and Al2O3 particles onto the surface. Laser processing was carried out using high diode power laser (HDPL). A series of experiments was carried out with varying scan rates and laser power. The resulting surface layers were examined using metallographic optical microscopy, scanning electron microscopy, X-ray diffraction, microhardness measurements and corrosion resistance tests. Mg-Al-Zn alloys after laser treatment are characterized by two zones: alloyed zone (AZ) and heat affected zone (HAZ) with different thickness and shape depending on laser power and ceramic powder used. Alloyed zone is composed mostly of dendrites with the Mg17Al12 lamellar eutectic and Mg in the interdendritic areas. The increase of microhardness from about 50 HV0,1 to about 200 HV0,1 in alloyed zone were observed.

关键词： Magnesium alloys

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Rare earths metals microstructure modification of chosen Al-Si alloys

Rare earths metals microstructure modification of chosen Al-...

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第六届国际稀土开发与应用研讨会

作者： L.A.Dobrzanski M.Krupinski K.Labisz Z.Rdzawski Division of Materials Processing Technology Management and Computer Techniques in Materials ScienceInstitute of Engineering Materials and BiomaterialsSilesian University of TechnologyKonarskiego St.18a44-100 GliwicePoland

The investigations were performed on the cast aluminium-silicon alloy,according to the EN AC-4XXXX standard with added rare earths metals as modificators. The used methodology was based on the usage of a UMSA(Universal Metallurgical Simulator and Analyzer)which has allow to determine the liquidus/solidus thermal points of the solidified Al-Si alloy,as well the thermal points,where a phase or eutectic crystallisation ***

关键词： Aluminium alloys Rare earths metals derivative thermoanalysis

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Influence of aluminium content on behaviour of magnesium cast alloys in bentonite sand mould

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作者： Dobrzański, L.A. Tański, T. Silesian University of Technology Division of Materials Processing Technology and Computer Techniques in Materials Science Institute of Engineering Materials and Biomaterials Konarskiego St. 18a 44-100 Gliwice Poland

ISBN: (纸本)3908451655

In this paper there is presented the structure and proprieties of the modeling cast magnesium alloys as cast state and after heat treatment, depending on the cooling medium (furnace, water, air), with different chemical composition. The improvement of the manufacturing technique and chemical composition as well as of heat treatment and cooling methods leads to the development of a material designing process for the optimal physical and mechanical properties of a new developed alloy. In the analysed alloys a structure of α solid solution and fragile phase β (Mg 17Al12) occurred mainly on grain borders as well as eutectic and AlMnFe, Mg2Si phase. The investigation is carried out to testy the influence of the chemical composition and precipitation processes on the structure and mechanical properties of the magnesium cast alloys with different chemical composition in its as cast alloys and after heat treatment. © (2009) Trans Tech Publications.

关键词： Heat treatment

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Influence of aluminium content on behaviour of magnesium cast alloys in bentonite sand mould

Solid State Phenomena

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Solid State Phenomena 2009年 147-149卷 764-769页

In this paper there is presented the structure and proprieties of the modeling cast magnesium alloys as cast state and after heat treatment, depending on the cooling medium (furnace, water, air), with different chemical composition. The improvement of the manufacturing technique and chemical composition as well as of heat treatment and cooling methods leads to the development of a material designing process for the optimal physical and mechanical properties of a new developed alloy. In the analysed alloys a structure of a α solid solution and fragile phase β (Mg17Al12) occurred mainly on grain borders as well as eutectic and AlMnFe, Mg2Si phase. The investigation is carried out to testy the influence of the chemical composition and precipitation processes on the structure and mechanical properties of the magnesium cast alloys with different chemical composition in its as cast alloys and after heat treatment. © (2009) Trans Tech Publications Ltd, Switzerland.

关键词： Magnesium alloys

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Comparison of structure and properties of the PVD, Hybrid (Galvanic + PVD), and galvanic coatings deposited onto the brass substrate

Comparison of structure and properties of the PVD, Hybrid (G...

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6th International Latin American Conference on Powder technology, PTECH 2007

作者： Dobrzanski, Leszek A. Lukaszkowicz, Krzysztof Division of Materials Processing Technologies and Computer Techniques an Materials Science Institute of Engineering Materials and Biomaterials Silesian University of Technology Konarskiego St. 18a 44-100 Gliwice Poland

ISBN: (纸本)9780878493609

The properties of thin hard coatings and consequently their functionality are influenced by microstructural characteristics such as mechanical properties. A variety of interlayers has been used in hybrid coatings for various purposes. The paper presents investigation results of the structure, erosion and corrosion resistance, and mechanical properties of the galvanic Ni/Cr, hybrid Ni/Cr + Zr/ZrN (galvanic + PVD) and monolithic nitride coatings deposited by PVD technique (dc magnetron sputtering) onto brass (CuZn40Pb2) substrates. The ceramic PVD coatings or layers are the Cr-, Ti-, TiAl-, Zr-nitrides. The investigation covered the etallographic analysis on the scanning electron microscope, mechanical properties and erosion test. The corrosion tests were made in a 1 M NaOH solution. It was found out that PVD coatings display high corrosion resistance.

关键词： Corrosion resistance

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Properties and corrosion resistance of PM composite materials based on EN AW-Al Cu4Mg1(A) aluminium alloy reinforced with Ti(C,N) particles

Properties and corrosion resistance of PM composite material...

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作者： Dobrzanáski, Leszek A. Wlodarczy-Fligier, Anna Adamiak, Marcin Division of Materials Processing Technology and Computer Techniques in Materials Science Institute of Engineering Materials and Biomaterials Silesian University of Technology Konarskiego St. 18a 44-100 Gliwice Poland

The paper presents investigation results of the heat treatment effect on the properties and corrosion resistance of sintered composite materials with EN AW-Al Cu4Mg1(A) alloy matrix reinforced with Ti(C,N) particles of various volume fractions. Composite materials were examined without heat treatment and after heat treatment which was carried out to improve their properties and corrosion resistance. It was found that the proportion of reinforcement particles Ti(C,N) has an effect on the mechanical properties of composite materials. An increase in hardness and decrease in compression strength, tensile strength and abrasive wear are observed with the increase in the fraction of reinforcement particles. The corrosion susceptibility of the composite materials was determined using the potentiodynamic method in a 3% aqueous solution of NaCl. Based on the determined anode polarisation curves and also on the electrochemical parameters, the investigated materials are susceptible to pitting corrosion. Copyright © 2007 Inderscience Enterprises Ltd.

关键词： Aluminum alloys

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