Ultra-long Life Fatigue Behavior of SUJ2 Bearing Steel

LI Yong-de; ZHANG Li-li; ZHANG Chong; HE Ying-ying

doi:10.11868/j.issn.1001-4381.2016.08.014

Cailiao gongcheng (Aug 2016)

Ultra-long Life Fatigue Behavior of SUJ2 Bearing Steel

LI Yong-de,
ZHANG Li-li,
ZHANG Chong,
HE Ying-ying

Affiliations

LI Yong-de: Equipment Manufacturing College, Hebei University of Engineering, Handan 056038, Hebei, China
ZHANG Li-li: Equipment Manufacturing College, Hebei University of Engineering, Handan 056038, Hebei, China
ZHANG Chong: Shandong Analysis and Test Center, Jinan 250014, China
HE Ying-ying: Jiangsu Iron & Steel Research Institute(Shagang), Zhangjiagang 215625, Jiangsu, China

DOI: https://doi.org/10.11868/j.issn.1001-4381.2016.08.014
Journal volume & issue: Vol. 44, no. 8
pp. 85 – 92

Abstract

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Ultra-long life fatigue behavior of SUJ2 bearing steel was studied by ultrasonic fatigue testing machine. The results show that, for the crack origin of composite oxide and TiCN,crack initiates from the interface between inclusion and matrix, and for the iron-chromium carbide crack origin, the inclusion itself cracks. The relative GBF(granular bright facet) size is proportional to 1/ΔKinc2. GBF is no longer formed when ΔKinc>8MPa·m1/2 for SUJ2 bearing steel. The crack propagation rule in GBF is obtained by data fitting, it is verified that Paris equation which can describe the crack growth in GBF is verified.

Published in Cailiao gongcheng

ISSN: 1001-4381 (Print)
Publisher: Journal of Materials Engineering
Country of publisher: China
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: http://jme.biam.ac.cn/CN/1001-4381/home.shtml

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