淬火转移时间对Ti-1023合金组织与力学性能的影响

doi:10.13251/j.issn.0254-6051.2020.09.016

金属热处理 ›› 2020, Vol. 45 ›› Issue (9): 91-95.DOI: 10.13251/j.issn.0254-6051.2020.09.016

淬火转移时间对Ti-1023合金组织与力学性能的影响

佟健博^1,2, 黄利军^1,2, 张文强^1,2, 颜孟奇^1,2, 李雪飞^1,2

1.中国航发北京航空材料研究院,北京 100095;
2.中国航发先进钛合金重点实验室,北京 100095

收稿日期:2020-03-24 出版日期:2020-09-25 发布日期:2020-12-29
作者简介:佟健博(1988—),男,工程师,博士,主要研究方向为高强高韧钛合金,E-mail:jb—tong@hotmail.com

Influence of quenching transfer time on microstructure and mechanical properties of Ti-1023 alloy

Tong Jianbo^1,2, Huang Lijun^1,2, Zhang Wenqiang^1,2, Yan Mengqi^1,2, Li Xuefei^1,2

1. AECC Beijing Institute of Aeronautical Materials,Beijing 100095,China;
2. AECC Key Laboratory of Advanced Aeronautical Titanium Alloys,Beijing 100095,China

Received:2020-03-24 Online:2020-09-25 Published:2020-12-29

摘要/Abstract

摘要： 通过室温拉伸性能测试、断口分析和显微组织分析,研究了淬火转移时间对Ti-1023合金组织演变和力学性能的影响规律和机理。结果表明,随淬火转移时间的增加,淬火转移过程中过饱和β相中析出α相,导致等轴α相含量增加,过饱和β相基体的相对含量降低,时效析出的次生α_s相含量和弥散程度下降,致使合金强度降低、塑性提高。对于厚80 mm的Ti-1023合金板材或锻件,将淬火转移时间控制在120 s之内,合金组织性能不会受到明显的影响。

关键词: Ti-1023合金, 固溶时效, 淬火转移时间, 显微组织, 力学性能

Abstract: Influence of transferring time for quenching on the microstructure evolution and mechanical properties of Ti-1023 alloy was investigated by means of tensile test,fracture analysis and microstructure characterization.The results indicate that with the increase of transfer time for quenching,α phase precipitated from supersaturated β phase is observed,leading to the volume fraction of equiaxed α phase and supersaturated β matrix increase and decrease,respectively,and the content and dispersion of secondary α_s phase precipitated after aging decrease,which result in the strength reduction and the ductility improvement of Ti-1023 alloy.For Ti-1023 alloy bars or forgings with thickness of 80 mm,the microstructure and properties of the alloy will not be significantly affected with transferring time for quenching controlled in 120 s.

Key words: Ti-1023 alloy, solution and aging, quenching transfer time, microstructure, mechanical properties

中图分类号:

TG146.23

佟健博, 黄利军, 张文强, 颜孟奇, 李雪飞. 淬火转移时间对Ti-1023合金组织与力学性能的影响[J]. 金属热处理, 2020, 45(9): 91-95.

Tong Jianbo, Huang Lijun, Zhang Wenqiang, Yan Mengqi, Li Xuefei. Influence of quenching transfer time on microstructure and mechanical properties of Ti-1023 alloy[J]. Heat Treatment of Metals, 2020, 45(9): 91-95.

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淬火转移时间对Ti-1023合金组织与力学性能的影响

Influence of quenching transfer time on microstructure and mechanical properties of Ti-1023 alloy

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