检索结果-内蒙古大学图书馆

Uncovering the influence of Mo and N on the hot-corrosion resistance of super austenitic stainless steels in a chloride-containing oxidizing environment

引用

Corrosion Science 2025年 255卷

作者： Jianwen Jia Lifeng Hou Hong Luo Shucai Zhang Hongxia Wang Huayun Du Yide Wang Yinghui Wei College of Materials Science and Engineering Taiyuan University of Technology Taiyuan Shanxi 030024 China Shanxi Key Laboratory of Metallic Material Corrosion and Control Taiyuan Shanxi 030024 China National Materials Corrosion and Protection Data Center Institute for Advanced Materials and Technology University of Science and Technology Beijing Beijing 100083 China School of Metallurgy Northeastern University Shenyang 110819 China State Key Laboratory of Advanced Stainless Steel Taiyuan Iron and Steel (Group) Co. Ltd. Taiyuan 030003 China

The corrosion behavior of two super austenitic stainless steels (SASSs) 4Mo0.06 N and 6Mo0.18 N at 800 ℃ in a chloride-containing oxidizing environment was meticulously examined. The results indicated that higher Mo and N contents in 6Mo0.18 N facilitate the formation of Laves, σ phase and Cr 2 N, concomitantly, the volatile Mo-oxides weaken the protectiveness of oxides scales and enhance the diffusion of chlorine, thereby exacerbating corrosion. Here, we elucidate that the addition of more Mo and N results in an increase of secondary phase particles in 6Mo0.18 N as well as chlorine-induced grain boundaries deterioration, causing an obvious internal corrosion. Instead, the distinctly enhanced corrosion resistance in 4Mo0.06 N is attributed to the formation of continuous Ni-Mo rich metallic phases at the oxide/matrix interfaces so as to reduce the diffusion of ions, which effectively diminishes the inner corrosion. These findings provide a great guiding significance in optimizing high-performance alloy designs for their potential applications.

关键词： Chlorine

来源：评论

学校读者我要写书评

暂无评论

Microstructural modification of Sm 2 Co 17 -type magnets by addition of TiO 2 powder to enhance mechanical properties

引用

Journal of Rare Earths 2025年

作者： Lei Wang Hao Wang Qiangfeng Li Chao Wang Meng Zheng Yifei Bi Boxi Zhang Hang Zhao Youhao Liu Yikun Fang Xiaofei Yi Wei Li Division of Functional Materials Research Central Iron and Steel Research Institute Beijing 100081 China State Key Laboratory of Rare Earth Permanent Magnetic Materials Earth-Panda Advanced Magnetic Material Co. Ltd. Hefei 231500 China Shanghai Aerospace Control Technology Institute Shanghai 201109 China

The mechanical properties of Sm 2 Co 17 magnets are improved by introducing oxide powders. However, there is a trade-off between the mechanical and magnetic properties. It is important to explore an oxide powder that effectively improves the mechanical properties while avoiding more introduced nonmagnetic elements. TiO 2 is a candidate because it is more reducible than Sm 2 O 3 and Ti in it is in +4 valence state. In this work, a small amount (0.08 wt%–0.38 wt%) of fine TiO 2 powers (average powder size is ∼2 μm) were introduced into the magnets. The fracture mechanism of TiO 2 -added magnets is still brittle cleavage fracture. With TiO 2 addition of 0.08 wt%, the maximum energy product ( BH ) max of the magnet is more than 218 kJ/m 3 , and the coercivity H cj is larger than 2290 kA/m. More impressively, the maximum flexural strength of the magnets is improved by 37% compared to the original magnet. The introduced TiO 2 is reduced by Sm in the magnet to form Ti and Sm 2 O 3 at sintering. Ti is uniformly distributed in the matrix. The newly-formed Sm 2 O 3 particles and the ones from the unavoidable oxidation during the preparation process are mainly distributed on the grain boundaries. The particles refine the grains by the Zener pinning effect. Thus, the flexural strength of magnet is improved. Furthermore, with the TiO 2 addition up to 0.38 wt%, the mean grain size decreases by about 34.2%. However, the flexural strength is not further improved significantly. The evolution of the flexural strength is expected to be associated with the larger cellular structure sizes and the increased number of Sm 2 O 3 aggregation zones. The results provide a new perspective and inspiration for enhancing the mechanical properties of Sm 2 Co 17 -type magnets.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Pulp concentration control based on dynamic matrix control

Pulp concentration control based on dynamic matrix control

引用

Chinese Intelligent Systems Conference, CISC 2017

作者： Hao, Wen Dong, Jie Peng, Kaixiang Jia, Mengqi Wang, Qiang Key Laboratory for Advanced Control of Iron and Steel Process of Ministry of Education Beijing100083 China School of Automation and Electrical Engineering University of Science and Technology Beijing Beijing100083 China

ISBN: (纸本)9789811064982

In the papermaking industry, the stability of the pulp concentration determines the quality of the paper. However, the change of the pulp concentration is in a state of fluctuation for a long time and the pulp concentration control system has the characteristics of large lag, non-linearity and time-varying. It is difficult to achieve the desired control effect by using the traditional PID controller in the concentration control process. Therefore, use of dynamic matrix control algorithm to design the controller can solve the problem of disturbance and modeling complexity. In this paper, dynamic matrix control algorithm and PID control simulation results show that the dynamic matrix control algorithm has better control quality. The output satisfies the constraint limit with higher probability, and the output constraints and performance index can be met. © 2018, Springer Nature Singapore Pte Ltd.

关键词： Three term control systems

来源：评论

学校读者我要写书评

暂无评论

Computing reachable sets for linear discrete systems with bounded input 29

Computing reachable sets for linear discrete systems with bo...

引用

第29届中国控制与决策会议

作者： Chao Wang Lizhen Shao Guangda Hu Yadong Xu Key Laboratory of Advanced Control of Iron and Steel Process(Ministry of Education ) School of Automation and Electrical EngineeringUniversity of Science and Technology Beijing Department of mathematics Shanghai University

ISBN: (纸本)9781509046584

In this paper,an approximation method of reachable sets for linear discrete systems with bounded input is *** method finds boundary points of reachable sets by solving finite convex optimization *** not only constructs an inner approximation bounding but also an outer approximation *** numerical examples are used to demonstrate the validity of the *** to a recent Lyapunov-Krasovskii functional based approach,our method obtains much tighter bounding sets.

关键词： approximation of reachable sets optimization supporting points normal directions

来源：评论

学校读者我要写书评

暂无评论

Polygenic risk score and lung adenocarcinoma risk among never-smokers by EGFR mutation status-a brief report

引用

Journal of thoracic oncology : official publication of the International Association for the Study of Lung Cancer 2024年第4期20卷 521-530页

作者： Batel Blechter Chao Agnes Hsiung Xiaoyu Wang Haoyu Zhang Wei Jie Seow Jianxin Shi Nilanjan Chatterjee Hee Nam Kim Maria Pik Wong Yun-Chul Hong Jason Yy Wong Juncheng Dai H Dean Hosgood Zhaoming Wang I-Shou Chang Jiyeon Choi Jiucun Wang Minsun Song Wei Hu Wei Zheng Jin Hee Kim Baosen Zhou Demetrius Albanes Min-Ho Shin Lap Ping Chung She-Juan An Hong Zheng Yasushi Yatabe Xu-Chao Zhang Young Tae Kim Xiao-Ou Shu Young-Chul Kim Roel C H Vermeulen Bryan A Bassig Jiang Chang James Chung Man Ho Bu-Tian Ji Michiaki Kubo Yataro Daigo Yukihide Momozawa Yoichiro Kamatani Takayuki Honda Hideo Kunitoh Shun-Ichi Watanabe Yohei Miyagi Haruhiko Nakayama Shingo Matsumoto Masahiro Tsuboi Koichi Goto Zhihua Yin Atsushi Takahashi Akiteru Goto Yoshihiro Minamiya Kimihiro Shimizu Kazumi Tanaka Tangchun Wu Fusheng Wei Jian Su Yeul Hong Kim In-Jae Oh Victor Ho Fun Lee Wu-Chou Su Yuh-Min Chen Gee-Chen Chang Kuan-Yu Chen Ming-Shyan Huang Hsien-Chih Lin Adeline Seow Jae Yong Park Sun-Seog Kweon Chien-Jen Chen Yu-Tang Gao Chen Wu Biyun Qian Daru Lu Jianjun Liu Hyo-Sung Jeon Chin-Fu Hsiao Jae Sook Sung Ying-Huang Tsai Yoo Jin Jung Huan Guo Zhibin Hu Tzu-Yu Chen Laurie Burdett Meredith Yeager Amy Hutchinson Sonja I Berndt Wei Wu Junwen Wang Jin Eun Choi Kyong Hwa Park Sook Whan Sung Li Liu Chang Hyun Kang Chung-Hsing Chen Jun Xu Peng Guan Wen Tan Chih-Liang Wang Alan Dart Loon Sihoe Ying Chen Yi Young Choi Jun Suk Kim Ho-Il Yoon Qiuyin Cai In Kyu Park Ping Xu Qincheng He Chih-Yi Chen Junjie Wu Wei-Yen Lim Kun-Chieh Chen John K C Chan Jihua Li Hongyan Chen Chong-Jen Yu Li Jin Joseph F Fraumeni Jie Liu Maria Teresa Landi Taiki Yamaji Yang Yang Belynda Hicks Kathleen Wyatt Shengchao A Li Hongxia Ma Bao Song Zhehai Wang Sensen Cheng Xuelian Li Yangwu Ren Motoki Iwasaki Junjie Zhu Gening Jiang Ke Fei Guoping Wu Li-Hsin Chien Fang-Yu Tsai Jinming Yu Victoria L Stevens Pan-Chyr Yang Dongxin Lin Kexin Chen Yi-Long Wu Keitaro Matsuo Nathaniel Rothman Kouya Shiraishi Hongbing Shen Stephen J Chanock Takashi Kohno Qing Lan Division of Cancer Epidemiology and Genetics National Cancer Institute Rockville MD USA. Institute of Population Health Sciences National Health Research Institutes Zhunan Taiwan. Division of Cancer Epidemiology and Genetics National Cancer Institute Rockville MD USA Saw Swee Hock School of Public Health National University of Singapore and National University Health System Singapore Singapore Department of Medicine Yong Loo Lin School of Medicine National University of Singapore and National University Health System Singapore Singapore. Department of Oncology School of Medicine Johns Hopkins University Baltimore MD USA Department of Biostatistics Johns Hopkins Bloomberg School of Public Health Baltimore MD USA. Department of Preventive Medicine Chonnam National University Medical School Gwangju Republic of Korea. Department of Pathology Queen Mary Hospital Hong Kong Hong Kong. Department of Preventive Medicine Seoul National University College of Medicine Seoul Republic of Korea. Epidemiology and Community Health Branch National Heart Lung and Blood Institute Bethesda MD USA. Department of Epidemiology School of Public Health Nanjing Medical University Nanjing China. Department of Epidemiology and Population Health Albert Einstein College of Medicine New York USA. Department of Computational Biology St. Jude Children's Research Hospital Memphis TN USA. National Institute of Cancer Research National Health Research Institutes Zhunan Taiwan. Ministry of Education Key Laboratory of Contemporary Anthropology School of Life Sciences Fudan University Shanghai China State Key Laboratory of Genetic Engineering School of Life Sciences Fudan University Shanghai China. Department of Statistics & Research Institute of Natural Sciences Sookmyung Women's University Seoul 04310 Korea. Division of Epidemiology Department of Medicine Vanderbilt University Medical Center and Vanderbilt-Ingram Cancer Center Nashville TN USA. Department of Environmental Health

We assessed the association between a genome-wide polygenic risk score (PRS) developed for lung adenocarcinoma (LUAD) risk and mutation on the epidermal growth factor receptor (EGFR) gene in 998 East Asian never-smoking female LUAD cases (518 EGFR-positive; 480 EGFR-negative) and 4,544 never-smoking controls using case-case and multinomial regression analyses. We found that the PRS was more strongly associated with EGFR-positive LUAD compared to EGFR-negative LUAD, where the association between the fourth quartile of the PRS and EGFR-positive LUAD (OR=8.63, 95% CI:5.67, 13.14) was significantly higher than the association between the fourth quartile of the PRS with EGFR-negative LUAD (OR=3.50, 95% CI: 2.44, 5.00) (p-heterogeneity=3.66x10). Our findings suggest that germline genetic susceptibility may be differentially associated with LUAD in never-smoking female East Asian patients depending on the cancer's mutation status, which may have important public health and clinical implications.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Approximating Reachable Sets of Linear control System Using Multi-objective Programming 29

Approximating Reachable Sets of Linear Control System Using ...

引用

第29届中国控制与决策会议

作者： Yangfan Zhang Lizhen Shao Guangda Hu Boyu Li Key Laboratory of Advanced Control of Iron and Steel Process(Ministry of Education) School of Automation and Electrical Engineering University of Science and Technology Beijing Department of Mathematics Shanghai University

ISBN: (纸本)9781509046584

A continuous control system can be discretized into a discrete control system by numerical methods for ordinary differential *** have shown that the reachable set of a continuous control system can be approximated by its discrete *** this paper,utilizing the convex property of the reachable set of a linear control system,we propose a method to approximate the convex reachable set of a discrete linear control system with multi-objective programming(MOP).We treat the reachable set problem as solving multiple MOP problems and the convex hull of the non-dominated sets of these MOPs is the reachable *** each MOP the revised normal boundary intersection method is used to obtain non-dominated ***,we use computational experiments to clearly illustrate the validity of this method.

关键词： Reachable set Multi-objective programming Revised normal boundary intersection method

来源：评论

学校读者我要写书评

暂无评论

LIGGGHTS and EDEM application for charging system of ironmaking blast furnace

LIGGGHTS and EDEM application for charging system of ironmak...

引用

2017年全国高炉炼铁学术年会

作者： Yaowei Yu Jian Zhang Henrik Saxén State Key Laboratory of Advanced Special Steel Shanghai Key Laboratory of Advanced FerrometallurgySchool of Materials Science and EngineeringShanghai University Thermal and Flow Engineering Laboratory Department of Chemical EngineeringAbo Akademi University Chengdu Base Panzhihua Iron & Steel Research Institute Co.LTD

Chemical reactions of the gas and the burden are decided by burden distribution,in particular the radial distribution of pellet or sinter and coke in blast *** appropriate control of burden distribution is required to yield a smooth operation with effective performance and an appropriate gas flow at the *** paper studies DEM application for charing system of ironmaking blast *** simulations(EDEM and liggghts),which are based on the discrete element method(DEM),are validated using mass fraction distribution in the trajectory of pellet flow and burden distributions of pellet on a horizontal *** results show good agreements are found between EDEM and experiment,liggghts and experiment and liggghts and *** shear modulus of material can increase calculation speed of DEM.

关键词： Blast furnace charging system burden distribution Liggghts EDEM

来源：评论

学校读者我要写书评

暂无评论

Review of Vacuum Arc Remelting Technology Studies

Review of Vacuum Arc Remelting Technology Studies

引用

The 7th International Conference on Modelling and Simulation of Metallurgical Processes in steelmaking

作者： WEI Han ZAN Lei ZHANG Hongbin ZHANG Jian Saxén Henrik YU Yaowei State Key Laboratory of Advanced Special Steel Shanghai Key Laboratory of Advanced FerrometallurgySchool of Materials Science and EngineeringShanghai University Chengdu Base Panzhihua Iron & Steel Research Institute Co.Ltd. Thermal and Flow Engineering Laboratory Department of Chemical Engineering?bo Akademi University

Vacuum arc remelting(VAR) is a casting process carried out in a vacuum with the aim of remelting the consumable/inconsumable electrode in such a way that the new ingot has improved chemical and physical homogeneity, melting and solidification process used to produce high quality ingots of segregation sensitive alloys. In present paper, development of vacuum arc remelting furnace in past two decades is reviewed and various defects in VAR leading to the macrosegregation and microsegregation are summarized. Different mathematical models of VAR and comparison among them, as well as operations and control strategies of VAR are also discussed.

关键词： vacuum arc remelting mathematical model white spots defects segregation fluid flow

来源：评论

学校读者我要写书评

暂无评论

Active Disturbance Rejection control in Stribeck Friction Dynamic Compensation for High-accuracy Servo Systems 35

Active Disturbance Rejection Control in Stribeck Friction Dy...

引用

第35届中国控制会议

作者： WANG Lijun JIAO Ruihua LI Qing YIN Yixin ZHENG Qing School of Automation & Electrical Engineering University of Science and Technology Beijing Key Laboratory of Advanced Control of Iron and Steel Process Ministry of Education Department of Electrical and Computer Engineering Gannon University

ISBN: (纸本)9781509009107

The servo systems are always difficult to design with high-accuracy due to nonlinear stick-slip at the low velocities and the uncertainties of friction dynamic model.A linear active disturbance rejection control(ADRC) dynamic compensation solution is presented independent of the friction *** deal with the problem of observing or tracking for unknown discontinuous signals of friction with Stribeck effect,a kind of linear extended state observer(LESO) algorithm is *** a linear control law is proposed to compensate the friction disturbance *** comparison with proportional-integral-derivative(PID) controller,the simulation results show that the proposed method not only has better accuracy of the discontinuous friction signal tracking,but also ensures better dynamic friction compensation at the low velocities.

关键词： Disturbance rejection Extended state observer Servo systems Stribeck friction Discontinuous tracking

来源：评论

学校读者我要写书评

暂无评论

A method for contour location of industrial objects based on CNN

A method for contour location of industrial objects based on...

引用

Youth Academic Annual Conference of Chinese Association of Automation (YAC)

作者： Jiangyun Li Qian Zhang School of Automation and Electrical Engineering Key Laboratory of Advanced Control of Iron and Steel Process (Ministry of Education) Beijing China

ISBN: (纸本)9781509044245

There are many industrial fields need to locate the specific texture or contour of the particular objects in the image with complex scenes. Edge detection algorithm based on gray transform is generally hard to handle these issues. This paper presented a model that can accurately locate the specific texture or contour in RGB images with complex scenes by modifying and improving the CNN-based edge detection model HED. It described and practiced the improving method in detail, using accurately locating the outer contour of the plate in images as an example. It achieves the target effectively and accurately and is proved to be a method for only locating the specific texture in images.

关键词： Three-dimensional displays

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：