Fatigue crack growth behaviour of nickel based superalloys at ambient temperature

被引：0
|
作者：
Hari Krishna E. [1 ]
Prasad K. [1 ]
Kumar V. [1 ]
Singh V. [2 ]
机构：
[1] Defence Metallurgical Research Laboratory, Hyderabad
[2] Department of Metallurgical Engineering, I.T- B.H.U, Varanasi
来源：
Transactions of the Indian Institute of Metals | 2010年 / 63卷 / 4期
关键词：
Crack closure; Fatigue crack growth rate; Grain size; IN; 718; Nickel based superalloy;
D O I：
10.1007/s12666-010-0111-0
中图分类号：
学科分类号：
摘要：
The present investigation deals with the study of fatigue crack growth rate (FCGR) behaviour of conventional IN 718 (Ni-0.02%C-19.0%Cr- 19.35%Fe-3.0%Mo-5.10%Nb-0.50%Al-1.00%Ti-0.0033%B, all in wt%) and modified IN 718 (Ni-0.02%C-19.04%Cr-19.31%Fe-3.04%Mo- 4.73%Nb-1.01%Al-1.16%Ti-0.0033%B, all in wt%) alloys at ambient temperature. Modified IN 718 alloy exhibits enhanced crack growth resistance due to roughness induced crack closure as compared to conventional IN 718 alloy. © 2010 TIIM, India.
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页码：719 / 721
页数：2
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