Microstructural evolution and formation mechanism of FCC titanium during heat treatment processing

被引：78

作者：

Jing, R. ^{[1
]}

Liu, C. Y. ^{[1
]}

Ma, M. Z. ^{[1
]}

Liu, R. P. ^{[1
]}

机构：

[1] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 552卷

关键词：

Transition metal alloys and compounds; Phase transformation; Crystal structure; Transmission electron microscopy; CENTERED-CUBIC TITANIUM; EPITAXIAL-GROWTH; TI-6AL-4V ALLOY; TI; MULTILAYERS; ALUMINUM; FILMS;

D O I：

10.1016/j.jallcom.2012.10.083

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：

The phase transformation of Ti-20Zr-6.5Al-4V alloy was studied during different heat treatment processes. Due to the addition of zirconium possessing the high-stacking-fault energy, a small amount of Ti underwent allotropic transformation from hcp-Ti to face-centered cubic (fcc) Ti during heat treatment. The alloy, which was subjected to solid solution treatment at 950 degrees C for 60 min and subsequent water quenched, underwent the following phase transformations: beta -> alpha + beta (residual) + alpha '' + fcc phase. The fcc phase was also found in the subsequent aging process, and when aging temperature reached 700 degrees C, the fcc-Ti completely decomposed into hexagonal close-packed alpha phase. The transus temperature of fcc-Ti was between 650 degrees C and 700 degrees C. It was found that the mechanical properties of the alloy are remarkably dependent on fcc phase content. (C) 2012 Elsevier B. V. All rights reserved.

引用

页码：202 / 207

页数：6

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