TiNiAl合金微观组织结构研究  

A Study of Microstructure of a TiNiAl Alloy

作　　者：刘晓山[1] 何国球[1] 陈成澍[1] 陈宁[1] 

机构地区：[1]同济大学材料科学与工程学院,上海200092

出　　处：《同济大学学报（自然科学版）》2007年第4期515-518,共4页Journal of Tongji University:Natural Science

基　　金：国家自然科学基金资助项目(50371063)

摘　　要：研究了一种TiNiAl合金的微观组织结构.用金相显微镜、扫描电镜观察合金铸态以及退火态的组织,有明显的晶粒细化现象以及细小的析出物出现.用透射显微镜观察合金锻态的微观组织,发现了典型的马氏体条状组织,以及析出的长椭圆棒状沉淀物.此外,还发现了明显的晶体分界面.This paper presents a study of the microstructure of a TiNiAl alloy. Metalloscope and scanning electron microscope are used to observe the surface microstructure of as-cast and as-anneal alloy. Grain refinement turn out in the alloy and a few minor precipitates also appear after annealing. The inner microstructure of as-forge alloy is studied with transmission electron microscope. Some typical martensite plates are found in it. The precipitate appears to he a long-elliptical-bar. A crystal boundary plane is also found in the test.

关 键 词：TiNiAl合金 微观组织 析出物 

分 类 号：TG13[一般工业技术—材料科学与工程]