Isothermal aging behavior of β Ti-Fe alloys

被引：6
|
作者：
Inoue, K
Ikeda, M
Komatsu, S
Sugimoto, T
Kamei, K
机构：
[1] Kansai Univ, Suita, Osaka 5648680, Japan
[2] Daido Steel Co Ltd, Res & Dev Lab, Nagoya, Aichi, Japan
[3] Kansai Univ, Fac Engn, Suita, Osaka, Japan
来源：
TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN | 1998年 / 84卷 / 11期
关键词：
titanium-iron alloy; metastable beta alloy; isothermal aging; resistivity; hardness; omega phase; alpha phase;
D O I：
10.2355/tetsutohagane1955.84.11_790
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The isothermal aging behavior of Ti-5,8 and 10 mass%Fe alloys at 673K, 723K and 773K was investigated by resistivity and hardness measurements. X-ray diffractometry and transmission electron microscopy. The Time-Temperature-Transformation diagram of the alloys was determined. In Ti-5 mass%Fe and Ti-8 mass%Fe, the isothermal omega phase precipitated by aging at all of the aging temperatures. Because the isothermal w phase did not precipitate by 773K aging in T-10mass%Fe, the upper temperature limit for precipitation of isothermal omega phase in Ti-10mass%Fe will situate between 723K and 773K. Incubation period prior to nucleation of a phase is shortened with elevating aging temperature. The influence of Fe content on the rime for nucleation of a phase was not clear. Only at 723K, resistivity and hardness of all specimens show second abrupt decrease by more than 600 ks aging, which suggests the precipitation of TiFe.
引用
收藏
页码：790 / 796
页数：7
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