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Electropolishing parameters of NiTi alloy MIAO Wei-dong(缪卫东)1, MI Xu-jun(米绪军)2, WANG Xin-lu(王新录)1, LI Hua-chu(栗华矗)1Li Rui (李锐) 1. General Research Institute for Nonferrous Metals, Beijing 100088... in NiTi alloy in several fields for its special characteristics, but its essential details and electropolishing mechanism have not been reported yet as a demand from business competition, which......
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: A Microstructures and properties of laser spot-welded joint of superelastic NiTi alloy wire YAN Xiao-jun, YANG Da-zhi, LIU Li-ming (Department of Materials Engineering, Dalian University..., Ni-content, micro-hardness and stress-strain curves in comparison with the base metal. The results show that laser welding NiTi alloy is advisable when NiTi alloy is used as functional materials......
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, superelasticity, shape memory effect and damping capacity are greatly improved. Key words: porous NiTi alloy; microwave sintering; Mg space holder; superelasticity; damping capacity 1 Introduction Nickel... biocompatibility [24]. Recently, the porous NiTi alloy has been prepared using the Mg space holder with the pre-alloyed NiTi powders to prevent the formation of the undesired secondary phases [14,19,20......
have obviously high equivalent internal friction value than the dense NiTi alloys. Key words: porous NiTi alloy; internal friction; phase transformation; porosity; frequency effect  ...不同的小块,其间有细长的孔壁相连,使样品S-Ⅳ整体上呈现网状结构.由表1结果可见,样品的孔隙率,开孔度和平均孔隙尺寸均随造孔剂加入量的增加而提高. 表1 所制备的多孔NiTi合金样品及其孔隙参数 Table 1 Pore parameters of prepared porous NiTi alloy samples 图1 多孔NiTi合金的孔隙形......
Electrochemical behavior of YAG laser-welded NiTi shape memory alloy YAN Xiao-jun(阎小军), YANG Da-zhi(杨大智), LIU Xiao-peng(刘晓鹏) School of Materials Science and Engineering, Dalian University... measurement, linear and potentiodynamic polarization. The results indicate that the laser-welded NiTi alloy is less susceptible to pitting and crevice corrosion than the base metal, which is demonstrated......
. The results show that the energy input balances against the energy output during cyclic loading of the porous NiTi alloy after performing several compression cycles as ‘training’, and the porous NiTi alloys...,均经历了应变水平为ε=4%的4个压缩循环.显然,样品孔隙率增加时其力学性能从488 MPa (N1)下降到83 图3 不同孔隙率多孔NiTi合金样品的压缩σ─ε曲线 Fig.3 Compression σ─ε curves of porous NiTi alloy samples with different porosities (C1 to C4 denotes......