Influence of heat treatment on microstructure and damage tolerance property in Ti-6Al-2Zr-1Mo-1V

被引：3
|
作者：
范荣辉
朱明
惠松骁
李德富
沈健
机构：
[1] China
[2] General Research Institute for Nonferrous Metals
[3] General Research Institute for Nonferrous Metals Beijing
来源：
Transactions of Nonferrous Metals Society of China | 2007年 / S1期
关键词：
Ti-6Al-2Zr-1Mo-1V; microstructure; crack propagation rate; fracture toughness;
D O I：
暂无
中图分类号：
TG166.5 [钛及其合金的热处理];
学科分类号：
080201 ; 080503 ;
摘要：
The influence of heat treatment on the microstructure and damage tolerance property of Ti-6Al-2Zr-1Mo-1V titanium alloy was investigated. The large-thickness Ti-6Al-2Zr-1Mo-1V titanium alloy plate was produced by β-processing,following with duplex anneal in(α+β) phase field and β anneal,respectively. The fatigue crack propagation rate(da/dN) test and the fracture toughness(KⅠC) test of Ti-6Al-2Zr-1Mo-1V were performed. The results show that the annealing in(α+β) phase field,with increasing anneal temperature,prior β grain size and α colony size of Ti-6Al-2Zr-1Mo-1V remained constant approximately,α lamella mean size increases gradually;KⅠCincreases and da/dN decreases respectively;when annealing in β phase field,prior β grain size and α colony size increases sharply,da/dN decreases drastically. β anneal is better than anneal in(α+β) phase field as to improve the damage tolerance property of Ti-6Al-2Zr-1Mo-1V.
引用
收藏
页码：482 / 485
页数：4
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