Low-Cycle Fatigue of a Nickel Superalloy at Various Loading Frequencies

被引：0
作者：
Ryzhkov, P. V. [1 ]
Gorbovets, M. A. [1 ]
Khodinev, I. A. [1 ]
机构：
[1] VIAM, Natl Res Ctr Kurchatov Inst, Moscow 105005, Russia
来源：
RUSSIAN METALLURGY | 2024年 / 2024卷 / 02期
关键词：
low cycle fatigue; strain-controlled loading; total deformation amplitude; loading frequency; nickel superalloy; ELEVATED-TEMPERATURE; STRAIN-RATE; BEHAVIOR; TENSILE; DWELL; TIME;
D O I：
10.1134/S003602952470085X
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The influence of the deformation frequency in a low-cycle region (f = 1-3 Hz, N <= 10(5) cycles) on the fatigue life characteristics of a nickel superalloy has been studied. Tests are performed under strain-controlled loading conditions at temperatures of 25 and 700 degrees C. The influence of the deformation frequency on the fatigue life is found to be most significant at an elevated temperature. The main difference in the character of fracture consists in a flatter fracture surface relief and a longer fatigue crack front at an increased loading frequency.
引用
收藏
页码：495 / 500
页数：6
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