The evolution of microstructure of Ti-6Al-4V alloy during concurrent hot deformation and phase transformation

被引：61

作者：

He, Lijia ^{[1
]}

Dehghan-Manshadi, A. ^{[2
]}

Dippenaar, R. J. ^{[2
]}

机构：

[1] Liaoning Univ Technol, Sch Mat Sci & Engn, Jinzhou 121001, Peoples R China

[2] Univ Wollongong, Fac Engn, Wollongong, NSW 2500, Australia

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2012年 / 549卷

关键词：

Ti-6Al-4V; Thermo-mechanical processing; Phase transformation; Microstructure; AUSTENITIC STAINLESS-STEEL; MARTENSITIC-TRANSFORMATION; DYNAMIC GLOBULARIZATION; TITANIUM-ALLOYS; WORKING; RECRYSTALLIZATION; BEHAVIOR; STRAIN;

D O I：

10.1016/j.msea.2012.04.025

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The microstructure development during concurrent hot deformation and beta/alpha phase transformation in a Ti-6Al-4V alloy was investigated in detail. The influences of deformation during slow cooling on the stress-strain curve and microstructural morphology were established. The results showed that concurrent hot deformation and phase transformation can reduce alpha grain size and increase the kinetics of phase transformation remarkably. Such improvement in grain refinement and phase transformation is ascribed to the strain enhanced beta/alpha phase transformation phenomena. Also, dynamic recrystallization and globularization of alpha layers were observed by deformation of sample to high strains, expecting considerable influence on mechanical properties. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：163 / 167

页数：5

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