Microstructure of stress-induced martensite in nanocrystalline NiTi shape memory alloy
来源期刊：Rare Metals2014年第4期
论文作者：Xiao-Bin Shi Li-Shan Cui Zhen-Yang Liu Da-Qiang Jiang Xiao-Dong Han
文章页码：379 - 382
摘 要：The microstructure of stress-induced martensite（SIM） in the nanocrystalline NiTi alloy was investigated by means of transmission electron microscopy（TEM）. The result shows that the multi-variant structure of the martensite is suppressed and only single-variant martensitic twins form after tensile deformation when the grain size is smaller than80 nm. The normal directions of the（001）B190twin planes are all within the range of 45° from the axial direction of the wire. The angle between twin crystals（1"11）Mand（111）Tof the SIM is also found to be smaller than that of thermally induced martensite in nanocrystalline NiTi.
Xiao-Bin Shi1，Li-Shan Cui1，Zhen-Yang Liu1，Da-Qiang Jiang1，Xiao-Dong Han1,2
1. State Key Laboratory of Heavy Oil Processing,China University of Petroleum2. Institute of Microstructure and Properties of Advanced Materials,Beijing University of Technology
摘 要：The microstructure of stress-induced martensite（SIM） in the nanocrystalline NiTi alloy was investigated by means of transmission electron microscopy（TEM）. The result shows that the multi-variant structure of the martensite is suppressed and only single-variant martensitic twins form after tensile deformation when the grain size is smaller than80 nm. The normal directions of the（001）B190twin planes are all within the range of 45° from the axial direction of the wire. The angle between twin crystals（1"11）Mand（111）Tof the SIM is also found to be smaller than that of thermally induced martensite in nanocrystalline NiTi.
关键词：
