Fatigue scatter of 1.2542 tool steel after deep cryogenic treatment

被引：6
|
作者：
Niaki, Keyvan Seyedi [1 ]
Vandat, Seyed Ebrahim [2 ]
机构：
[1] IROST, Dept Mech Engn, Tehran, Iran
[2] Islamic Azad Univ, Ayatollah Amoli Branch, Dept Engn, Amol, Iran
来源：
MATERIALS TODAY-PROCEEDINGS | 2015年 / 2卷 / 4-5期
关键词：
Reliability of design; Design of part; Fatigue scatter; MECHANICAL-PROPERTIES; TENSILE TOUGHNESS; MICROSTRUCTURE; CARBIDES; BEHAVIOR;
D O I：
10.1016/j.matpr.2015.07.033
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Fatigue failure is the most common failure in engineering parts. Therefore, effect of deep cryogenic treatment on the fatigue strength of 1.2542 tool steel has become important. In this study, two groups of specimens were used to investigate fatigue behavior; only one of these groups underwent deep cryogenic treatment in liquid nitrogen for 4 h after hardening treatment in water. The results showed that fatigue limits of both groups were approximately the same; however, scatter of fatigue data was less in the deep cryogenic specimens. Thus, in design process, deep cryogenic specimens can be used with more reliability coefficient; therefore, dimensions of engineering parts are reduced. (C) 2014 The Authors. Elsevier Ltd. All rights reserved.
引用
收藏
页码：1210 / 1215
页数：6
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