THE REDISTRIBUTION OF ALLOYING ELEMENTS BY RAPID-HEATING SOLUTION TREATMENT OF AN (ALPHA + BETA) TITANIUM-ALLOY

被引:9
|
作者
IVASISHIN, O [1 ]
FLOWER, HM [1 ]
机构
[1] UNIV LONDON IMPERIAL COLL SCI & TECHNOL,DEPT MET & MAT SCI,LONDON SW7 2BT,ENGLAND
关键词
TITANIUM METALLOGRAPHY - Transformations - TITANIUM MOLYBDENUM ALLOYS - X-Ray Analysis;
D O I
10.1007/BF01114300
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Thin-foil X-ray energy-dispersive chemical analysis of an ( alpha plus beta ) titanium alloy has been used to establish the compositional profiles which develop between the alpha and beta phases as a result of heating into the beta field at a rate of 100 K sec** minus **1. The results show that alpha phase transforms to beta via a diffusional mechanism as it is progressively enriched in beta -stabilizing solutes. Complete diffusional transformation of alpha to beta occurs 160 K above the beta transus but the beta phase remains chemically inhomogeneous. On subsequent quenching at a rate of 400 K sec** minus **1, beta phase containing less than approximately 10 wt% Mo equivalent of beta -stabilizing solutes transforms to martensite.
引用
收藏
页码:2519 / 2524
页数:6
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