Influence of dynamic strain aging on plastic instability behaviour of near alpha titanium alloy Timetal 834

被引：5
|
作者：
Prasad, K. [1 ]
机构：
[1] Def Met Res Lab, Hyderabad 500058, Andhra Pradesh, India
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2010年 / 26卷 / 09期
关键词：
Dynamic strain aging; Strain hardening exponent; Considere criterion; Tensile deformation; Timetal; 834; Plastic instability; FLOW BEHAVIOR; DEFORMATION; TEMPERATURE; FRACTURE; DAMAGE;
D O I：
10.1179/174328408X302422
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The deformation behaviour of near alpha titanium alloy Timetal 834 was investigated by analysing Considere criterion in temperature range between 300 and 500 degrees C at an interval of 25 degrees C. In the dynamic strain aging (DSA) regime (400-475 degrees C) studied in this material, Considere criterion was satisfied partially at peak DSA temperature (450 degrees C). This was attributed to maximum DSA effect at 450 degrees C which eventually resulted in specimen fracture at low ductility levels. Strain hardening exponent (n) values was determined using Ludwik plot, Considere criterion and obtained experimentally from uniform strain. The n values obtained from Ludwik plot and Considere criterion were greater than the uniform strain in DSA regime studied.
引用
收藏
页码：1068 / 1072
页数：5
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