A repair process for fatigue damage using plasma nitriding

被引：35

作者：

Alsaran, A ^{[1
]}

Kaymaz, I ^{[1
]}

Çelik, A ^{[1
]}

Yetim, F ^{[1
]}

Karakan, M ^{[1
]}

机构：

[1] Ataturk Univ, Dept Mech Engn, TR-25240 Erzurum, Turkey

来源：

SURFACE & COATINGS TECHNOLOGY | 2004年 / 186卷 / 03期

关键词：

plasma nitriding; fatigue damage; repair;

D O I：

10.1016/j.surfcoat.2003.12.017

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effect of plasma nitriding on the fatigue life of AISI 4140 steel having a certain fatigue loading has been investigated. Untreated and nitrided specimens were subjected to fatigue loading up to a certain level, and then nitrided for 0.5 h and subjected to fatigue testing again. It was observed that the process applied to untreated specimens improves the fatigue life of the specimens that were plasma nitrided for 0.5 h due to the subsurface crack nucleation. However, for already nitrided specimens, a significant improvement in the fatigue life has not been observed by applying the proposed process because the compound layer on the surface prevents the diffusion during the second nitriding. (C) 2004 Elsevier B.V All rights reserved.

引用

页码：333 / 338

页数：6

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