Giga-cycle Fatigue Behavior of Notched Specimens for High Speed Steel

被引：2

作者：

Ebara, R. ^{[1
]}

Nakamoto, K. ^{[1
]}

Ogura, A. ^{[2
]}

Ishihara, Y. ^{[2
]}

Hamaya, S. ^{[2
]}

机构：

[1] Hiroshima Inst Technol, Dept Mech Syst Engn, Saeki Ku, 2-1-1 Miyake, Hiroshima 7315193, Japan

[2] Nichidai Corp, Kyoto 6100201, Japan

来源：

ADVANCES IN FRACTURE AND DAMAGE MECHANICS IX | 2011年 / 452-453卷

关键词：

Giga-cycle fatigue; High speed steel; Notched specimen; Stress concentration factor; Subsurface crack initiation;

D O I：

10.4028/www.scientific.net/KEM.452-453.749

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Giga-cycle fatigue behavior of notched specimens with stress concentration factor, Kt of 1.5, 2.0 and 2.5 for 0.65 mass% carbon matrix high speed steel, YXR3 with Rockwell C scale hardness number of 60.7 is investigated. The higher the stress concentration factor the lower the giga-cycle fatigue strength is. The emphasis is placed upon the subsurface crack initiation observed on all notched specimens. Crack initiation mode of high speed steel is discussed with respect to fracture surface morphology.

引用

页码：749 / +

页数：2