A STUDY OF BETA-]ALPHA'' MARTENSITIC-TRANSFORMATION VOLUME CHANGE IN TI-AL-V ALLOYS

被引：18

作者：

GRUJICIC, M

NARAYAN, CP

机构：

[1] Center for Advanced Manufacturing, Department of Mechanical Engineering, Clemson University, Clemson

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1992年 / 151卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0921-5093(92)90210-R

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effect of alloy chemistry on the sign and the magnitude of a volume change accompanying beta --> alpha" martensitic transformation in the Ti-Al-V system is explored using X-ray diffraction. The transformation volume change is found to vary between -4.5 and +4.5%. Alloys within the composition range characterized by a large, positive (> + 4%) volume change are further studied to explore their potential for dispersed-phase transformation toughening of gamma-titanium aluminide. They are found to be reasonably chemically compatible with the gamma-phase. However, stability of the beta-phase in these alloys is low, causing martensite to form on quenching to room temperature. It was concluded that, due to insufficient stability of the beta-phase, these alloys are not suitable for dispersed-phase transformation toughening of gamma-titanium aluminide.

引用

页码：217 / 226

页数：10

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