Fatigue crack initiation and propagation behavior of forging die steels

被引：31

作者：

Ebara, Ryuichiro ^{[1
]}

机构：

[1] Hiroshima Inst Technol, Dept Mech Syst Engn, Saeki Ku, Hiroshima 7315193, Japan

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2010年 / 32卷 / 05期

关键词：

Hot forging die steel; Cold forging die steel; Low cycle fatigue; High cycle fatigue; Giga cycle fatigue; Thermal fatigue; Fatigue crack initiation; Fatigue crack propagation; Fractography; FAILURE ANALYSIS;

D O I：

10.1016/j.ijfatigue.2009.07.020

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In this paper, fatigue crack initiation and propagation behavior of forging die steels are reviewed mainly on the basis of the author's experimental results. First of all, low cycle fatigue strength, fatigue crack propagation behavior and thermal fatigue properties of the representative hot forging die steel SKD62 are summarized with respect to testing temperature, steel hardness, stress concentration factor of the specimen and surface treatments effect. Then, the emphasis is focused upon the recently obtained experimental results on low cycle, high cycle and giga cycle fatigue behavior of cold forging die steels. Fatigue crack initiation and propagation behavior of cold forging die steels is discussed with respect to steel hardness, surface roughness and stress concentration factor of specimen. Characteristics of fatigue fracture surface morphology is summarized and related to fatigue crack initiation and propagation mechanism of hot and cold forging die steels. Finally, recommended studies on fatigue of forging die steels are touched on briefly. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：830 / 840

页数：11

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