Analysis of high temperature deformation behavior of a high Nb containing TiAl based alloy

被引：35
作者：
He, Xiaoming [1 ]
Yu, Zhongqi [1 ]
Lai, Xinmin [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Mech Engn, Shanghai 200240, Peoples R China
来源：
MATERIALS LETTERS | 2008年 / 62卷 / 26期
关键词：
metals and alloys; as-cast Ti-45Al-8.5Nb-(W; B; Y); alloy; deformation and fracture; flow stress; neural network;
D O I：
10.1016/j.matlet.2008.05.071
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effects of deformation temperature and strain rate on the hot deformation behaviors of as-cast Ti-45Al-8.5Nb-(W,B,Y) alloy were investigated. The results indicated that when deformation temperature is below 1250 degrees C, the flow stress decreases with the increase of deformation temperature and decrease of strain rate, once deformation temperature reaches 1250 degrees C, the flow stress is not sensitive to strain rate any more. A neural network model was established to predict the flow stress of this high Nb containing TiAl based alloy during hot deformation. The predicted flow stress curves are in good agreement with experimental results. (c) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：4181 / 4183
页数：3
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