超塑成形及热处理对TC21合金组织演变的影响

凌志伟; 董洪波; 王志录

doi:10.15980/j.tzzz.2013.04.028

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超塑成形及热处理对TC21合金组织演变的影响
Effect of Superplastic Deformation and Heat Treatment on Microstructure Evolution of TC21 Alloy
2013年33卷第4期页码：381-383
纸质出版日期： 2013 ，
DOI： 10.15980/j.tzzz.2013.04.028

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[1]凌志伟,董洪波,王志录.超塑成形及热处理对TC21合金组织演变的影响[J].特种铸造及有色合金,2013,33(04):381-383.

Ling Zhiwei1, Dong Hongbo1, Wang Zhilu2. Effect of Superplastic Deformation and Heat Treatment on Microstructure Evolution of TC21 Alloy[J]. Special Casting & Nonferrous Alloys, 2013,33(4):381-383.
[1]凌志伟,董洪波,王志录.超塑成形及热处理对TC21合金组织演变的影响[J].特种铸造及有色合金,2013,33(04):381-383. DOI： 10.15980/j.tzzz.2013.04.028.

Ling Zhiwei1, Dong Hongbo1, Wang Zhilu2. Effect of Superplastic Deformation and Heat Treatment on Microstructure Evolution of TC21 Alloy[J]. Special Casting & Nonferrous Alloys, 2013,33(4):381-383. DOI： 10.15980/j.tzzz.2013.04.028.

摘要

TC21钛合金在不同条件下超塑拉伸变形后

进行双重退火热处理

研究热加工工艺对TC21合金显微组织演变的影响。结果表明

当变形温度在890～960℃时

TC21合金的伸长率随变形温度的增加先增加后减少

最佳超塑性变形温度为910℃;TC21合金在α+β相区超塑变形

然后在α+β相区双重退火处理后得到双态组织;在准β区进行超塑变形、α+β相区双重退火处理后得到网篮组织。

Abstract

After superplastic tensile deformation and double annealing heat treatment at different conditions

the effects of hot working technology on microstructure evolution of TC21 titanium alloy were investigated. The results show that at 890 ℃～960 ℃

the elongation of TC21 alloy is increased firstly and then decreased with the increase of deformation temperature. The optimal superplastic deformation temperature is 910 ℃. After superplastic deformation and double annealing treatment in α+β phase zone

the microstructure of TC21 alloy exhibits duplex structure. After superplastic deformation in quasi-β phase zone and double annealing treatment in α+β phase zone

basketweave structure can be observed in the microstructure of TC21 alloy.