Structure evolution of Cu-based shape memory powder during mechanical alloying
The microstructures of shape memory powders of Cu-Al-Ni prepared from pure powders of Cu,Al and Ni using the mechanical alloying(MA) technique were studied by means of hardness measurement,metallograph observation,XRD and SEM.The hardness reaches the peak as the increase in hardness due to plastic deformation and the decrease in hardness due to kinetic annealing reach a balance.The process of MA leads to the formation of a laminated structure,and the layer becomes thinner with an increase in milling time.The pre-alloyed shape memory powder can be formed by milling at 300 r/min for 50 h using a planetary ball mill.
mechanical alloying (MA) shape memory alloy microstructure
XIAO Zhu LI Zhou FANG Mei LUO Ming GONG Shen TANG Ning
School of Materials Science and Engineering,Central South University,Changsha 410083,China;Key Laboratory of Nonferrous Metals Science and Engineering,Ministry of Education,Changsha 410083,China
国际会议
2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)
长沙
英文
2007-11-28（万方平台首次上网日期，不代表论文的发表时间）