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http://dx.doi.org/10.3795/KSME-A.2011.35.9.1119

High Cyclic Fatigue Life and Fracture Behaviors of Shot-Peened Bearing Steel  

Yoon, Sang-Jae (Dept. of Mechanical Engineering, Hanyang Univ.)
Choi, Nak-Sam (Dept. of Mechanical Engineering, Hanyang Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.35, no.9, 2011 , pp. 1119-1129 More about this Journal
Abstract
Shot-peening effects on the fatigue behavior of bearing steel were investigated under the high cyclic loading. Hourglass shape specimens were made of bearing steel(JIS-SUJ2) for rotary bending fatigue tests. Two kinds of treatments were performed : a heat treatment and a shot-peened surface treatment after the heat treatment. The fracture surfaces of specimens were classified into two types of fracture mode : the surface fracture mode induced by a surface defect and the internal fracture mode induced by a nonmetallic inclusion. Inclusion depth and shape affected considerably the fatigue life. Shot-peening treatment improved much the fatigue life of the bearing steel under low and high levels of cyclic loads. Probabilistic-stress-life (P-S-N) curves were suggested for the reliable fatigue life estimation of the improved bearing steel.
Keywords
Bearing Steel; Rotary Bending Fatigue Test; Fish-eye Fatigue Fracture; Shot-peening; Probabilistic-Stress-Life Curve;
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Times Cited By KSCI : 3  (Citation Analysis)
Times Cited By SCOPUS : 0
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