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Preparation and Properties of High Hardness and Oxidation Resisting Coating Using Electric Arc Spray TANG Chun-tian1,LI Zhuo-xin1,WANG Jiang-Ping1,CUI Li1 (1.Beijing University of Technology, Beijing, 100022) 摘要:A coating with high hardness, wear and oxidation resistance was prepared by electric arc spray. The hardness,bonding strength, abrasive wear and values of porosity and oxidation......
;(x(C)≤0.5%) for the child phases and the martensite hardness is calculated for high carbon content (x(C)>0.5%) in alloy. Then, the complete carburizing-quenching hardness calculation model is built... of the proposed mathematical model. Key words: carburizing-quenching simulation; hardness model; DEFORM-HT; residual austenite; high carbon content 1 Introduction In modern manufacturing process......
Microstructures and hardness of Ti-6Al-4V alloy staging castings under centrifugal field SUI Yan-wei(隋艳伟)1, LI Bang-sheng(李邦盛)1, LIU Ai-hui(刘爱辉)1, NAN Hai(南 海)2, GUO Jing-jie(郭景杰)1, FU Heng-zhi(傅... size, the thickness of lamellar α+β phase, and the Vickers hardness, as well as the relationships between Vickers hardness, grain size and thickness of lamellar α+β phase were investigated......
Characterization of Surface Hardness and Microstructure of High Performance Concrete杨永敢,张云升,SHE WeiSchool of Materials Science and Engineering, Southeast University摘 要:The relationship between compressive strength obtained by universal testing machine and rebound value obtained by the hammer of high performance concrete was systematically investigated......
and the inevitable bending load, the use of cemented carbide is not recommendable because of its low fracture toughness. Instead, high strength powder metallurgical steel, CPM Rex 121, with a hardness of 66-68HRC... can achieve high strength and high hardness and shows a low addition to the fatigue. One possible tool material meeting these two main demands are powder metallurgically manufactured (PM) tool steels......
Glass ceramic of high hardness and fracture toughness developed from iron-rich wastes Weixin HAN1 (1.Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China) Abstract:A study has been carried out on the feasibility of using high iron content wastes, gen-erated during steel making, as a raw material for the production of glass ceramic. The iron-rich wastes were mixed......
Effect of plastic deformation on microstructure and hardness of AlSi/Al gradient composites ZHANG Wei-wen(张卫文), LUO Zong-qiang(罗宗强), XIA Wei(夏 伟), LI Yuan-yuan(李元元) School of Mechanical...-hardness were studied on plates made from a cylindrical ingot of AlSi/Al aluminum composite. This ingot was produced by double-stream-pouring continuous casting(DSPCC). The results show that the three......
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Effects of high pressure on the microstructure and hardness of a Cu-Zn alloyZHAO Jun a, LIU Lin b, YANG Jingru c, PENG Guirong a, LIU Jianhua a, ZHANG Ruijun a, and XING Guangzhong a a State Key... of the Cu-Zn alloy were not obvious. In addition, high pressure can increase the hardness of the Cu-Zn alloy, but it cannot generate any new phase.关键词:......
Microstructure and nanoindentation hardness of Ag/Fe multilayers ZHU Xiao-ying(朱晓莹)1, 2, LIU Xue-jing(刘雪敬)1, ZENG Fei(曾 飞)1, PAN Feng(潘 峰)1 1. Laboratory of Advanced Materials, Department...; Abstract: Ag/Fe multilayers with well compositional modulation periodicity of 4-60 nm were prepared at room temperature by evaporation deposition using an ultra high vacuum (UHV) chamber......
