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Structure and sliding wear behavior of 321 stainless steel/Al composite coating deposited by high velocity arc spraying technique CHEN Yong-xiong(陈永雄), XU Bin-shi(徐滨士), LIU Yan(刘 燕), LIANG Xiu... (321/Al coating) was prepared by high velocity arc spraying technique (HVAS) with 321 stainless steel wire as the anode and aluminum wire as the cathode. The traditional 321 stainless steel coating......
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; Abstract: Three types of FeMnCrAl/Cr3C2 coatings with different Al content were deposited on 20# steel substrates by the high velocity arc spraying (HVAS) process. Surface microstructures of the coatings... in the range of 60?-90? impact angles. Erosion loss of the coatings occurs through brittle breaking, cutting and fatigue spalling. Key words: high velocity arc spraying (HVAS); coating; erosion......
粉末冶金高速压制技术及其应用 蔡一湘1,闫志巧1,陈峰1 (1.国家钛及稀有金属粉末冶金工程技术中心,广州有色金属研究院粉末冶金研究所,广州,510651) 摘要:高速压制技术(HVC)是2001年瑞典提出的一种先进的成形技术,兼有动态压制的高冲击能量和传统压制的高速平稳性等多重特征,可广泛用于金属,陶瓷和聚合物等材料的成形.介绍了HVC技术的原理.论述了该技术与其它成形技术相比具有成本低,压坯密度高且分布均匀,低弹性后效和高精度,模具使用寿命长等特点.讨论了HVC技术对所用模具和原料粉的要求.介绍了HVC技术的研究进展,并对实际生产应用前景进行了展望. 关键词:粉末冶金; 高速压制; 高密度; 成形; powder metallurgy; high velocity compaction; high density; forming; [全文内容正在添加中] ......
Oxidation Performance of Fe-Al/WC Composite Coatings Produced by High Velocity Arc Sprayed at 650℃ ZHU Sheng1,XU Bin-Shi1,ZHANG Wei1,MENG Fan-jun1,ZHU Zi-xin1,Ma Shi-ning1 (1.National Key Laboratory for Remanufacturing, Beijng, 100072, China) 摘要:The Fe-Al/WC intermetallic composite coatings have been prepared by high velocity arc spraying(HVAS)technology on 20G steel and the oxidation......
slow. The inner mechanism for such phenomena is due to the complex violent interaction between the high-temperature and high-velocity turbulent plasma jet and the ambient atmosphere. Compared... high velocity (up to 700 m/s). With the fast development of hardware and software of computers in recent years, numerical simulation method has become one effective substituted way. ECKERT et al[2] have......
and plastic strain were analyzed. Key words: electromagnetic forming; high velocity forming; numerical simulation; finite element mode; magnetic force 1 Introduction Electromagnetic forming (EMF) is one... at the center. There are two peak values in strain rate during the forming process. The first one occurs due to the extrusion force at the center before 40 μs. The second one occurs due to the high velocity......
during the forming process were analyzed, which include high strain rate, viscous effect and first increasing then decreasing characteristics of hardening velocity. The non-linear spring, linear spring...金属粉体高速压制成形的变形特性. 关键词:高速压制成形;高应变率;加工硬化;应力-应变曲线 中图分类号:TF12 文献标志码:A Characteristics analysis of stress-strain curves of metal powers during high velocity compaction process......
Development of Al356e-Al2O3 Nanocomposite Coatings by High Velocity Oxy-fuel TechniqueY.Mazaheri,F.Karimzadeh,M.H.EnayatiDepartment of Materials Engineering,Isfahan University of Technology摘 要:
Improvement of a High Velocity Compaction Technique for Iron PowderDil Faraz KHAN1,2,Haiqing YIN1,Zahid USMAN3,Matiullah KHAN4,2,Xianjie YUAN1,Wenhao WANG1,Xuanhui QU11. Laboratory of Particulate...="ChDivSummary" name="ChDivSummary">Water atomized pure iron powder was compacted by high velocity compaction(HVC) with and without upper relaxation assist(URA) device.The influence of URA device on green......