Intermartensitic transformation in a NiMnGa alloy

被引：68

作者：

Dai, LY ^{[1
]}

Cullen, J ^{[1
]}

Wuttig, M ^{[1
]}

机构：

[1] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2004年 / 95卷 / 11期

关键词：

D O I：

10.1063/1.1687203

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The temperature dependencies of the elastic constants of martensitic Ni0.50Mn0.284Ga0.216 were studied in the temperature range from 428 K down to 200 K. Measurements were conducted using the ultrasonic continuous-wave method in a 0.8 T magnetic field. At 220 K abrupt changes were found in the temperature dependences of the velocities of all 11 elastic wave modes, which indicates a structural phase change from the tetragonal (5M) martensite to a second, probably tetragonal, phase (nonlayered) at lower temperature. (C) 2004 American Institute of Physics.

引用

页码：6957 / 6959

页数：3

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