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. The nearsurface area exhibited a high number of dislocation densities and deformation twin interaction, leading to a surface strengthening and hardness improvement of up to 112% than the deformation-free...Microstructure and mechanical properties of CoCrFeMnNi high entropy alloy with ultrasonic nanocrystal surface modification processTimothy Alexander Listyawan1,Hyunjong Lee2,Nokeun Park1,3,Unhae Lee41......
(UHTCs) are characterized by high melting point, high strength and hardness, and high electrical and thermal conductivity. The high thermal conductivity arises from both electronic and phonon...Porous high entropy(Zr0.2Hf0.2Ti0.2Nb0.2Ta0.2)B2: A novel strategy towards making ultrahigh temperature ceramics thermal insulatingHeng Chen1,2,Huimin Xiang2,Fu-Zhi Dai2,Jiachen Liu1,Yanchun Zhou1,21......
during hot pressing are both very hard even at high-temperature. At the same time the hardness of the substrate material drops at high-temperature. These hard granules then go easily into the counter... Tribological behavior of Ni-Cr-based composite at high temperatures XUE Mao-quan(薛茂权) Changzhou Institute of Light Industry Technology, Changzhou 213164, China Received 15 July 2007; accepted 10......
STUDY ON TEMPERATURE FIELD INDUCED IN HIGH FREQUENCY INDUCTION HEATING Z.Q. Yao1,J. Hu1,Y.J. Shi1,H. Shen1 (1.School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200030, China) Abstract:A mathematical model was established for the temperature field developed during high frequency induction heating (HFIH) by Maxwell''s equations. It required solving the coupled equations......
Thermomechanical treatment of super high strength Cu-8.0Ni-1.8Si alloy PAN Zhi-yong(潘志勇)1, 2, WANG Ming-pu(汪明朴)1, LI Zhou(李 周)1, XIAO Zhu(肖 柱)1, CHEN Chang(陈 畅)1 1. School of Materials Science... high strength and electrical conductivity [1-2]; these properties are attributed to the precipitation of δ-Ni2Si phase from the supersaturated solid solution of the alloy during aging[3-4]. The CuNiSi......
Article ID: 1003-6326(2005)05-1089-07 Effects of high magnetic field on modification of Al-Si alloy LIAN Feng(连 峰)1, 2, QI Feng(齐 峰)1, LI Ting-ju(李廷举)1, HU Guo-bing(胡国兵)1 (1...: Effects of high magnetic field on modification of Al-6%Si hypoeutectic alloy, Al-12.6%Si eutectic alloy and Al-18%Si hypereutectic alloy were studied. For the Al-6%Si alloy, it is found that the sample......
Effects of Sc, Zr and Ti on the microstructure and properties of Al alloys with high Mg contentWANG Xu, CHEN Guoqin, LI Bing, WU Lianmei, and JIANG Daming School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China摘 要:The effects of trace Sc, Zr, and Ti on the microstructure and hardness of Al alloys with high Mg......
Composition and phase structure dependence of mechanical and magnetic properties for AlCoCuFeNi_x high entropy alloysCong Liu,Wenyi Peng,C.S.Jiang,Hongmin Guo,Jun Tao,Xiaohua Deng,Zhaoxia Chen摘 要..., 2.0, 3.0 in molar ratio) high entropy alloys(HEAs)were investigated. The results show that Ni element could lead to the evolution from face centered cubic(FCC), body centered cubic(BCC) and ordered BCC......
High strain rate superplasticity of AZ31 alloy ZHOU Hai-tao(周海涛), JIANG Yong-feng(蒋永锋), ZHONG Jian-wei(钟建伟), ZHAO Zhong-kai(赵仲恺), LI Qing-bo(李庆波) 1. School of Materials Science and Engineering... and ball-like. It is indicated that the dominant superplastic deformation mechanism at high strain rate is both grain refinement and grain boundary sliding. Key words: AZ31 magnesium alloy; high......
分布不均匀导致大颗粒Si优先断裂,如图8(d)所示,大颗粒Si上产生较多的裂纹.因此,Cu含量过高反而导致复合材料的力学性能下降. 图7 Al-50%Sip复合材料的弹性模量和布氏硬度与Cu含量的关系 Fig. 7 Relationship between elastic modulus, Brinell hardness of Al-50%Sip composites... Chao-qun, WANG Ri-chu, WANG Xiao-feng, CAI Zhi-yong, LIU Bing. Research progress of high aluminum-silicon alloys in electronic packaging[J]. The Chinese Journal of Nonferrous Metals, 2012, 22(9......
