Electron microscopy of new martensites with long period stacking order structures in Ni50AlxMn40-x alloys .1. Structures and morphologies.

被引：52

作者：

Morito, S ^{[1
]}

Otsuka, K ^{[1
]}

机构：

[1] UNIV TSUKUBA,INST MAT SCI,TSUKUBA,IBARAKI 305,JAPAN

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1996年 / 208卷 / 01期

关键词：

martensitic transformation; successive martensitic transformations; 14M (7R) martensite; 10M (15R) martensite; Ni-Al-Mn; long period stacking order structure;

D O I：

10.1016/0921-5093(95)10051-2

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The martensitic transformations in Ni50AlxMn50-x (16.0 less than or equal to x less than or equal to 20.5) alloys were extensively studied by electron microscopy observations at ambient temperature and differential scanning calorimetry measurements. As a result, a new martensite with 10M (15R, (<3(2)over bar>)(3)) long period stacking order structure was found for x greater than or equal to 19.0. For x less than or equal to 17.0, the martensite was invariably 14M (7R, (<5(2)over bar>)). For 17.0 less than or equal to x less than or equal to 19.0, various martensites were found, and the situation was in between the above two cases. Based on these results, a phase diagram to explain various martensitic transformations was proposed.

引用

页码：47 / 55

页数：9

共 17 条

[1] ELECTRON-MICROSCOPIC STUDY OF THETA-PHASE MARTENSITE IN NI-MN ALLOYS [J].