Low cycle fatigue behaviour of modified and conventional superalloy Inconel 718 at 650°C

被引：0
|
作者：
E. Hari Krishna
Kartik Prasad
Vikas Kumar
Vakil Singh
机构：
[1] Defence Metallurgical Research Laboratory,Department of Metallurgical Engineering
[2] I.T-B.H.U,undefined
来源：
Transactions of the Indian Institute of Metals | 2010年 / 63卷
关键词：
Ni base superalloy; IN 718; low cycle fatigue; cyclic softening; fracture behaviour;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The present investigation deals with the study and comparison of low cycle fatigue (LCF) behavior of modified IN 718 alloy with higher Al+Ti/Nb and Al/Ti ratios of 0.458 and 0.870, with that of conventional IN 718 alloy with corresponding ratios of 0.294 and 0.50 respectively. LCF tests were carried out in total strain control mode at total strain amplitudes (Δɛt/2) from ±0.625% to ±1.0%, in fully reversed loading (R= −1) at 650°C. The modified alloy was found to exhibit better LCF resistance than the conventional alloy.
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页码：63 / 66
页数：3
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