Effect of cooling rate on mechanism of β → α phase transformation on continuous cooling in Ti-5Ta-1.8Nb alloy

被引：18
作者：
Behera, Madhusmita [1 ]
Mythili, R. [1 ]
Raju, S. [1 ]
Saroja, S. [1 ]
机构：
[1] Indira Gandhi Ctr Atom Res, Phys Met Grp, Met & Mat Grp, Kalpakkam 603102, Tamil Nadu, India
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 553卷
关键词：
Titanium alloys; Nonequilibrium cooling; Microstructure; Phase transformations; Electron microscopy; Solvus lines; TITANIUM-BASE ALLOYS; NB ALLOY; TI-6AL-4V ALLOY; VIII GROUPS; TA; TI; MICROSTRUCTURE; CALORIMETRY; METALS;
D O I：
10.1016/j.jallcom.2012.10.131
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
An alpha + beta Ti-5Ta-1.8Nb alloy was solutionized in the beta phase field and cooled at different rates from 20 to 99 K/min. Detailed microstructural characterization of the products of beta -> alpha transformation after continuous cooling from the beta phase field has been carried out, to understand the effect of cooling rate on the transformation mechanisms. An increase in cooling rate causes a suppression of the beta -> alpha transformation temperature domain, resulting in composition variation of alpha and beta phases. Such a variation in the composition of b phase was observed to induce different secondary transformations, which are sensitive to the cooling rate. (C) 2012 Elsevier B. V. All rights reserved.
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页码：59 / 68
页数：10
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