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Excellent high-temperature friction and wear resistance of high–Cr die steels by trace in–situ nano-ceramics

Ceramics International 2025年第14期51卷 18540-18552页

作者： Bao, Ze-Ju Yang, Hong-Yu Dong, Bai-Xin Zhong, Xin-Miao Li, Yi-Lu Li, Ai-Min Wang, Cheng-Gang Li, Zhi-Gang Meng, Jia Qiao, Jian Kang, Jie Zhu, Ming Shu, Shi-Li Xu, Hui-Xia Qiu, Feng Jiang, Qi-Chuan State Key Laboratory of Automotive Simulation and Control Jilin University China Key Laboratory of Automobile Materials Ministry of Education and Department of Materials Science and Engineering Jilin University Renmin Street NO. 5988 Jilin Province Changchun130025 China ZhonghangShangda Superalloys Materials Co. Ltd No.16 Wangong Avenue Qinghe County Xingtai City Hebei Province 054800 China Technology Research and Development Casting & Forging Research Institute FAW Foundry Co. Ltd Crossing of Hexie Street & Bingwu Road Automotive Industry Development Zone Changchun Jilin Province 130013 China Department and Test Center FAW-Volkswagen Automotive Co. Ltd Jilin Province Changchun130011 China School of Mechatronic Engineering and Automation Foshan University No. 33 Guangyun Road Nanhai District Guangdong Province Foshan528231 China Jilin Liyuan Precision Manufacturing Co. Ltd. No. 5729 Xi'ning Road Economic Development Zone Jilin Province LiaoYuan136299 China Zhenjiang Xianfeng Automotive Parts Co. Ltd Dantu High Tech Industrial Park Jiangsu Province Zhenjiang212000 China School of Mechanical and Aerospace Engineering Jilin University Renmin Street NO. 5988 Changchun130025 China Jiangsu Tiangong Corporation Ltd A8 Tonggang Road Jiangsu Province Danyang212000 China

In this study, TiC + TiB2 nano-ceramics reinforced high–Cr die steels were successfully prepared using aluminum-based master alloy as a carrier for the nano-ceramics. The impact of nano-ceramics on the microstructure of steels as well as the tensile properties and friction and wear properties under high temperature conditions were explored. The incorporated nano-ceramics can significantly refine the microstructure of steels, resulting in finer and more uniformly precipitated carbides, thereby effectively improving the mechanical properties of steels. Compared with unmanipulated high–Cr die steels, the high-temperature (550 °C) yield strength of high–Cr steels reinforced with 0.02 wt% nano-ceramic was increased from 963 MPa to 1274 MPa. The volume wear rate of nano-ceramics reinforced high Cr steels reached 11.9 × 10−13 m3/m, 3.4 × 10−13 m3/m, 5.6 × 10−13 m3/m and 6.3 × 10−13 m3/m under the four conditions of 400 °C-30 N-300 r/min, 550 °C-20 N-300 r/min, 550 °C-30 N-300 r/min and 550 °C-40 N-300 r/min, which were reduced by 23.7 %, 34.6 %, 34.9 % and 35.1 % respectively. These results provide a new insight into improving the high-temperature friction and wear properties of steels. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Aluminum alloys

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Numerical analysis method for temperature distribution in cylindrical steel during quenching process

Solid State Phenomena

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Solid State Phenomena 2006年 118卷 355-362页

作者： Fukuya, Michiaki Terasaki, Toshio Hasegawa, Kouki Kitamura, Takanori Research and Development Dept Japan Casting & Forging Corporation Tobata-ku Kitakyushu804-8555 Japan Department of material Science Kyushu Institute of Technology Tobataku-Kitakyushu804-8550 Japan

The technics for predicting thermal cycle of a quenching by using the finite element method have been studied by comparing theoretical values with numerical analysis results. The basic equation of a minimum element length for cylinder thermal cycle was proposed, which was able to calculate from informations such as an initial temperature, a radius of cylinder, a heat transfer coefficient and the aimed temperature change at the cylinder surface. The minimum time increment for guaranteeing accuracy was given corresponding to the minimum element length. It was shown that the minimum element length for pipe thermal cycle was replaced by that of cylinder. Temperature distribution in cylinder during quenching process can be sufficiently predicted by the finite element method with the above, mentioned minimum element length and the minimum time increment. © (2006) Trans Tech Publications, Switzerland.

关键词： Temperature distribution

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casting and laser surface melting of 316l stainless steel from scrap resources

Casting and laser surface melting of 316l stainless steel fr...

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2nd International Conference on Materials Science and Engineering: Recent Advances and Challenges, ICMSE-RAC 2019

作者： Elgazzar, Haytham El-Hadad, Shimaa Abdel-Sabour, Hassan Laser and Additive Manufacturing Department Central Metallurgical Research and Development Institute Cairo Egypt Casting Technology Department Central Metallurgical Research and Development Institute Cairo Egypt

ISBN: (纸本)9783035715347

316L stainless steel is used in various industrial applications including chemical, biomedical and mechanical industries due to its good mechanical properties and corrosion resistance. Recycling of 316L stainless steel scrap without significantly reducing its value has received recently great attention because of the environmental regulations. In the current work, 316L stainless steel scrap was recycled via casting using Skull induction melting technique. The casted products subsequently subjected to laser surface melting process to improve its surface properties to be used for harsh environment. The results showed defect free surfaces with homogeneous microstructures. Nano size grains were also obtained due to rapid solidification process. Such nano size grains are preferred for extending the usage of the 316L stainless steel in new applications. © 2020 Trans Tech Publications Ltd, Switzerland.

关键词： Corrosion resistance

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The development of high-strength flame-retardant magnesium alloys

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Journal of Materials research and technology 2025年 36卷 5797-5823页

作者： Xian-Wen Chen Hong-Yu Yang Bai-Xin Dong Tian-Shu Liu Lin Liu Zheng Tian Lei Zhan Cheng-Gang Wang Zhi-Gang Li Jia Meng Jian Qiao Wei-Dong Yang Ming Zhu Shi-Li Shu Feng Qiu Qi-Chuan Jiang State Key Laboratory of Automotive Simulation and Control Jilin University PR China Key Laboratory of Automobile Materials Ministry of Education and Department of Materials Science and Engineering Jilin University Renmin Street NO. 5988 Changchun Jilin Province 130025 PR China Jilin Jiyan New Materials Technology Co. Ltd No. 21 Ecological East Street Jingyue High tech Zone Changchun 130119 PR China School of Engineering Changchun Normal University Changchun 130032 PR China School of Automotive Engineering Jilin Communication Polytechnic Changchun 130012 PR China Technology Research and Development Casting & Forging Research Institute FAW Foundry Co. Ltd Crossing of Hexie Street & Bingwu Road Automotive Industry Development Zone Changchun Jilin Province 130013 PR China Department and Test Center FAW-Volkswagen Automotive Co. Ltd Changchun Jilin Province 130011 PR China School of Mechatronic Engineering and Automation Foshan University No. 33 Guangyun Road Nanhai District Foshan Guangdong Province 528231 PR China Jilin Liyuan Precision manufacturing Co. Ltd. No. 5729 Xi'ning Road Economic Development Zone LiaoYuan Jilin Province 136299 PR China Zhenjiang Xianfeng Automotive Parts Co. Ltd Dantu High tech Industrial Park Zhenjiang Jiangsu Province 212000 PR China School of Mechanical and Aerospace Engineering Jilin University Renmin Street NO. 5988 Changchun 130025 PR China

Magnesium alloys possess a great potential for applications in the automobile and aerospace industries due to their extremely low density, exceptional machinability and enhanced dampening capacity. However, the low elastic modulus, low ductility, high flammability, and susceptibility to corrosion dramatically impeded their applications. In recent decades, some progress has been made in reinforcing magnesium alloys by alloying elements and nanoparticles to achieve higher strength and ignition points. The low melting point and low strength of magnesium alloy are their most significant drawback. The Federal Aviation Administration (FAA) of the United States lifts the ban on the use of magnesium alloys in aircraft cabins after evaluating some non-flammable magnesium alloys considering the advancement of flame-retardant magnesium alloys. Developing high flame-retardant magnesium alloys with good mechanical properties has broad prospects. The aim of this study was to comparatively review the effects of alloying elements and nanoparticles on the strength and flame retardancy of magnesium alloys and reveal the strengthening mechanism of flame retardancy. This article can offer a guideline for the compositional design of high-performance flame-retardant magnesium alloys.

关键词： Flame-retardant Ignite Alloying Nanoparticle Microstructure Influence mechanisms

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Corrosion and impact-abrasion-corrosion behaviors of quenching- tempering martensitic Fe-Cr alloy steels

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Journal of Iron and Steel research International 2022年第11期29卷 1853-1863页

作者： Zhi-bin Zheng Jun Long Yi Guo Hui Li Kai-hong Zheng Yan-xin Qiao Institute of New Materials Guangdong Academy of SciencesGuangdong Provincial Key Laboratory of Metal Toughening Technology and ApplicationGuangzhou 510650GuangdongChina Guangdong Provincial Iron Matrix Composite Engineering Research Center Guangzhou 510650GuangdongChina Jiangmen Guangjin Casting and Forging Co. Ltd.Jiangmen 529000GuangdongChina School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003JiangsuChina

The corrosion and impact-abrasion-corrosion behaviors of quenching-tempering Fe-Cr martensitic steels for ball mill liner were investigated in the corrosive slurry of a copper mine compared with high manganese *** is found that the corrosion resistance and the protectiveness of the passive film of Fe-Cr martensitic steels became worse when the carbon content *** quenching-tempering Fe-Cr martensitic steel showed better impact-abrasion-corrosion resistance in the corrosive slurry compared with the high manganese steel,especially the alloy steel with the carbon content of 0.3 wt.%.The synergistic effect between mechanics and corrosion has also been analyzed to further reveal the impact-abrasion-corrosion mechanism of the *** damage from pure mechanics accounted for the largest percentage(over 65%)for all steels,demonstrating that mechanical damage played the most important role in the impact-abrasion-corrosion behaviors of the *** impact and cracking resistance of the steel should also be paid special attention during the development of new materials for ball mill liner.

关键词： Mining Abrasive wear Corrosive wear Impact wear Martensitic steel

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Effect of induction hardening on fatigue properties of low alloy forged steel with high cleanliness in very high cycle regime

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Zairyo/Journal of the Society of Materials Science, Japan 2017年第12期66卷 893-899页

作者： Kikuchi, Shoichi Yakura, Ryota Fujitsuna, Nobuyuki Takaoka, Hiroyuki Ikegami, Tomonori Matsuda, Mariko Miura, Taku Ueno, Akira Sakai, Tatsuo Dept. Mech. Eng. Kobe Univ. Rokkodai-cho Nada-ku Kobe657-8501 Japan Research and Development Section Technical Development Department Steel Casting and Forging Division Kobe Steel Ltd. Araicho-Shinhama Takasago676-8670 Japan Former Grad. Sch. of Sci. and Eng. Ritsumeikan Univ. Nojihigashi Kusatsu525-8577 Japan Dept. Mech. Eng. Ritsumeikan Univ. Nojihigashi Kusatsu525-8577 Japan Research Organization of Science and Technology Ritsumeikan Univ. Nojihigashi Kusatsu525-8577 Japan

In order to examine the effects of cleanliness and induction hardening on the very high cycle fatigue properties of low alloy forged steel (40CrMo8) used for crankshafts of Diesel engines for marine use, rotating bending fatigue tests were performed for specimens with different cleanliness (super clean steel or conventional steel) and thickness of hardened layer (0.2 mm or 0.4 mm). The super clean steel showed higher fatigue limit than the conventional steel because the fatigue fracture at non-metallic inclusion was suppressed;however, the induction hardened super clean steel failed in the subsurface fracture mode from the singular microstructure. The induction hardened steel showed lower fatigue limit than the untreated steel. This result was attributed to the fact that the tensile residual stress was generated beneath the surface hardened layer at the fracture origin. Therefore, fatigue limit of the induction hardened steel was determined by the fatigue strength of the matrix at the fracture origin. © 2017 The Society of Materials Science, Japan.

关键词： Crankshafts

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Microstructural Evolution of Cast Hyper-Eutectic Al-18% Si Alloy during Cyclic Semi-Solid Heat Treatment

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Journal of Minerals and Materials Characterization and Engineering 2015年第5期3卷 390-398页

作者： Mohamed Ramadan College of Engineering University of Hail Hail Saudi Arabia Casting Technology Lab. Central Metallurgical Research and Development Institute (CMRDI) Cairo Egypt

The cyclic semi-solid heat treatment represents a promising technique for improving microstructure and mechanical properties of a wide range of metallic alloys. In the current research the influence of cyclic semi-solid heat treatment on microstructure of Al-18% Si alloy containing 0.8% Fe has been studied. All specimens were heated in an electrically heated resistance furnace with heating rate of 10°C·min-1 to 585°C. For a complete one cycle heat treatment (5 min heating time), samples after 5 min holding at 585°C were cooled to a temperature of 550°C in still air cooling and the samples were taken out immediately for water quenching. It was found that heat treatment cycles should be limited to 3 cycles or less in order to maintain fine grain size and globular structure without agglomeration and coalescence. Cyclic semi-solid heat treatment changes morphology of iron-rich intermetallics phases to be plate-like and fine plate iron-rich intermetallics phases, in stead of needle-like iron-rich intermetallics phases that are observed in as-cast samples. Cyclic heating shows a relatively higher hardness for all heating cycles compared with as-cast one due to its finer and globular structure. Cyclic semi-solid heat treatment technique results in lower coarsening rate constant compared with isothermal heat treatment one due to coarsening discontinuous effect.

关键词： Microstructural Cyclic Semi-Solid Heat Treatment Al-18% Si Microstructure Hyper-Eutectic Cast

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Interface Characterization of Bimetallic casting with a 304 Stainless Steel Surface Layer and a Gray Cast Iron Base

Interface Characterization of Bimetallic Casting with a 304 ...

引用

The 2nd International Conference on Materials Science and Engineering technology (MSET 2015)

作者： Mohamed Ramadan Central Metallurgical Research and Development Institute (CMRDI) Casting Technology Lab. College of Engineering University of Hail

Bimetallic castings are widely employed as working elements in winning machines which work in conditions of intensive friction *** main features of wear are:dynamic percussive loads,intensive abrasive wear caused by erosion and *** cylindrical rods cavities of the same dimensions of φ 20x200 mm were made in sand *** amount of liquid iron alloy with carbon equivalent of 4.14,Mn of 0.58 and Cu of 0.17 wt% was poured into the three rod cylindrical cavities over the solid 304 stainless steels cylindrical desks *** coherent interfaces for all liquid/Solid volumes(16 to 24) are produced and multi-layers interfacial microstructure bimetal are *** the liquid/solid volumes from 16 to 24 increases the thickness of transient layer from 52 to 89 mm and decreases the amount of ledeburite in the structure of solidified gray cast iron.

关键词： Interface,Characterization,Bimetallic,304 Stainless Steel,Microstructure,Gray Iron

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The Effect of Alloying Elements and Steelmaking Processes on the "A" Segregation Occurrence in Large Ingots

引用

1984 Symposium on Steel forgings

作者： Tae Kim, Jeong Ryang Pyo, Moon Souk Chang, Yun Soon Chang, Hyuk Research & Devehdpment Korea Heavy Industries & Construction Co. presently on leave as graduate student Changwon615 Korea Republic of department of Materials Science Engineering Korea Advanced Institute of Science & Technology Seoul Korea Republic of Research & Development Korea Heavy Industries & Construction Co. Korea Changwon615 Korea Republic of Casting & Forging Division Korea Heavy Industries & Construction Co. Korea Changwon615 Korea Republic of

ISBN: (纸本)9780803104655

Investigations on segregation in various sizes of ingots of 13, 25, 54, 104, 180, 210, and 43(l-ton weight were carried out at Korea Heavy Industries and Construction Co. The results of the segregation examined reveal that silicon-deoxidized (SD) carbon steel ingots have much more segregation than have vacuum carbon-deoxidized (VCD) low-alloy steel ingots. That is, the total carbon segregation ratio is 41% in the 210-ton Sl) carbon steel ingot, whereas it is 38~ and 21% in the 430 and l(/4-ton VCD, low-alloy steel inguts, respectively. From these results, " A " segregation is not found when the ratio of carbon segregation is less than 30 to 40% in both steel ingots. Since silicon and manganese increase the change of liquid density during solidification and molybdenum decreases it, it is possible to minimize the macrosegregation by increasing molybdenum and decreasing silicon and manganese within the specified range. © 1986 ASTM International. All rights reserved.

关键词： Alloying elements

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Influence of chemical modification by Y2O3 on eutectic Si characteristics and tensile properties of A356 alloy

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Transactions of Nonferrous Metals Society of China 2019年第7期29卷 1365-1374页

作者： M. E. MOUSSA S. EL-HADAD W. KHALIFA Department of Casting Technology Central Metallurgical Research and Development Institute (CMRDI) P. O. 87 Helwan Egypt Department of Mining Petroleum and Metallurgical Engineering Faculty of Engineering Cairo University P. O. 12613 Giza Egypt

The modification of A356 aluminum-silicon alloy using yttrium oxide (Y2O3) was studied. Addition levels of up to 2.5 wt.% Y2O3 were investigated. A premixed powder of Al-30wt.%Y2O3 was added to the melt at about 750℃ using vortex method. Samples were then poured in sand mold. The results showed that evident modification was obtained using the Y2O3 addition. The optimum level was 1.5 wt.%, and was corresponding to a eutectic temperature depression from 568 to 557℃. The eutectic Si particles were refined in length from 44.8 to 8.3 μm, and modified in aspect ratio from 6.8 to 0.98. Higher additions of Y2O3 caused de-modification of the eutectic Si particles. The ductility of the modified specimens was enhanced by more than 20% compared to the unmodified ones. This was associated with a gradual transfer from cleavage to a more ductile mode of fracture.

关键词： hypoeutectic Al-Si alloys modification yttrium oxide (Y2O3) ductility fracture mode

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