Deformation behavior of TiNiFe alloy in isothermal compression
来源期刊：Rare Metals2012年第4期
论文作者：WANG Shujuan,MI Xujun,YIN Xiangqian,and LI Yanfeng State Key Laboratory for Fabrication and Processing of Nonferrous Metals,General Research Institute for Nonferrous Metals,Beijing,,China
文章页码：323 - 327
摘 要：The hot deformation behavior of TiNiFe shape memory alloy was studied by isothermal compression tests.It was performed on a Gleeble-3500 thermal simulation machine at deformation temperature of 750 to 1050 ℃ and strain rate of 0.01 to 10.00 s-1 with maximum strain of 0.8.Deformation mechanism was investigated by the aid of true stress-true strain curves,kinetic analysis and processing map.The constitutive relationship was established in the form of Arrhenius-type hyperbolic-sine equation,and the apparent activation energy was calculated to be approximately 200 kJ·mol-1.The processing maps of TiNiFe alloy were appreciably influenced by true strain.
WANG Shujuan,MI Xujun,YIN Xiangqian,and LI Yanfeng State Key Laboratory for Fabrication and Processing of Nonferrous Metals,General Research Institute for Nonferrous Metals,Beijing,100088,China
摘 要：The hot deformation behavior of TiNiFe shape memory alloy was studied by isothermal compression tests.It was performed on a Gleeble-3500 thermal simulation machine at deformation temperature of 750 to 1050 ℃ and strain rate of 0.01 to 10.00 s-1 with maximum strain of 0.8.Deformation mechanism was investigated by the aid of true stress-true strain curves,kinetic analysis and processing map.The constitutive relationship was established in the form of Arrhenius-type hyperbolic-sine equation,and the apparent activation energy was calculated to be approximately 200 kJ·mol-1.The processing maps of TiNiFe alloy were appreciably influenced by true strain.
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