Influence of radical nitriding on fatigue strength of maraging steel

被引：0
|
作者：
Fukada, K
Kawagoishi, K
Morino, K
Nisitani, H
机构：
来源：
SURFACE TREATMENT V: COMPUTER METHODS AND EXPERIMENTAL MEASUREMENTS | 2001年 / 6卷
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中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Rotating bending fatigue tests were carried out to investigate the influence of radical nitriding on surface integrity and fatigue strength for a maraging steel. Fatigue strength was increased by nitriding. The initiation site of fracture was die surface at high stress levels and the interior at low stress levels in a nitrided steel, though it was the surface at all the stress levels in an aged steel. Consequently, S-N curve of the nitrided steel showed a double staged one, though that of the aged steel was an ordinary S-N one. In the nitrided steel, the main reason for the suface fracture was surface embrittlement while the one for the interior fracture was surface hardening, due to nitriding.
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页码：201 / 208
页数：8
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