铸造2017，Vol.66Issue(7)：735-738,4.
快速凝固Ni53Mn25Ga22合金薄带的马氏体转变和热致形状记忆效应
Martensite Transformation and Shape Memory Effect in Melt-Spun Ni53Mn25Ga22 Ribbons
尚尔峰 1段双 1甄广北 2李宗宾 3董文博1
作者信息
- 1. 沈阳铸造研究所,高端装备轻合金铸造技术国家重点实验室,辽宁沈阳110022
- 2. 中国航发哈尔滨东安发动机有限公司,黑龙江 哈尔滨 150066
- 3. 东北大学材料科学与工程学院,材料各向异性与织构教育部重点实验室,辽宁沈阳110819
- 折叠
摘要
Abstract
The ribbons with nominal composition of Ni53Mn25Ga22 were prepared by melt-spun method. As melt-spun technique was different from conventional casting, a series of variation would be caused during the processing. Accounting to the XRD results, the crystal structure of the alloy at room temperature was transformed from NM martensite structure in bulk material to 7M modulated martensite structure in ribbons. Martensite transformation temperatures were decreased after melt-spun and they got a little increase after annealing. The ribbons could be bent and return to the initial shape after heating to some extent, showing a good shape memory effect. The ribbons did not rupture during be bent, which suggested that the mechanical property was improved because of refined grains from melt-spun, so it would be helpful to practical application as a magnetic shape memory alloy.关键词
铁磁形状记忆合金/NiMnGa/快速凝固/马氏体转变Key words
ferromagnetic shape memory alloys/NiMnGa/melt-spun/martensite transformation分类
矿业与冶金引用本文复制引用
尚尔峰,段双,甄广北,李宗宾,董文博..快速凝固Ni53Mn25Ga22合金薄带的马氏体转变和热致形状记忆效应[J].铸造,2017,66(7):735-738,4.
