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Metals, Beijing 100088, China) Abstract: The Vickers hardness, electrical conductivity, tensile properties testing and TEM were used to investigate the high-temperature retrogression behavior of under-aged 7150 aluminum alloy. The results indicate that the hardness and electrical conductivity are strongly influenced by retrogression process. The valley values of retrogression curves become lower......
Abstract: The Cu-Cr-Zr alloys were aged at different temperatures for different time with different current densities. The results show that both the electrical conductivity and hardness are greatly improved after being aged with current at a proper temperature. The electrical conductivity increases approximately linearly with increasing current density while the hardness remains constant......
: Cu-0.5wt.%Cr alloy with high strength and high conductivity was processed by cryorolling (CR) and room temperature rolling (RTR), respectively. The microstructure, mechanical property and electrical... than that of RTR alloy. Key words: Cu-Cr alloy; cryorolling; microstructure; mechanical property; electrical conductivity 1 Introduction Cu and its alloys have attracted more attention in many fields......
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Surface characterization and electrical resistivity of electroless plating nanocrystalline copper films on glass ZHANG Hui-ping(张会平)1, JIANG Zhong-hao(江中浩)1, LIAN Jian-she(连建设)1 , HOU Xu-feng(侯旭峰... that the grain boundaries contribute mainly to the increase of electrical resistivity of nanocrystalline copper film compared with the film surfaces. Key words: nanocrystalline copper; electroless......
of Cu-1.0Cr-0.1Zr alloys under different treatment conditions 图3 轧制和时效处理对Cu-1.0Cr-0.1Zr合金导电性能的影响 Fig. 3 Effect of cold rolling and aging treatment on electrical conductivity of Cu-1.0Cr-0.1Zr alloy...-geng, KANG Hui-jun, CHEN Zong-ming, WANG Weu, ZOU Cun-lei, LI Ting-ju, WANG Tong- min. A high strength and high electrical conductivity Cu-Cr-Zr alloy fabricated by cryorolling and intermediate aging......
field through the boundary conditions, with a given electrical conductivity distribution. According to the electromagnetic field theory and Maxwell equation, the following equations are satisfied at any...; (2) where is the reconstructed conductivity; S(x, y) is the normalized sensitivity matrix; which is related to the actual electrical conductivity distribution in the sensing field......
for good hardening and electrical conductivity can be obtained by solution treating at 920℃ for lh and aging at 470℃ for 4h and at 550℃ for lh. The hardness and electrical conductivity can reach 108HV... alloy; aging; precipitation phase; hardness; electrical conductivity; [全文内容正在添加中] ......
, microhardness, electrical conductivity and microstructure of the sintered Cu-4%Au (mole fraction) alloy during thermomechanical treatment were studied. Following the primary strain hardening, an annealing... of the thermomechanical treatment. Key words: Cu-Au alloys; anneal hardening; thermomechanical treatment; hardness; microhardness; electrical conductivity 1 Introduction Continuous technological progress demands......
J. Cent. South Univ. (2012) 19: 1622-1628 DOI: 10.1007/s11771-012-1185-0 Influence factors on thermal conductivity of ammonia-water nanofluids YANG Liu(杨柳), DU Kai(杜垲), ZHANG Xiao-song(张小松) School... show that the type, content and size of nanoparticles, the temperature as well as the dispersion stability are the key parameters that affect the thermal conductivity of nanofluids. For the given......