Enhanced fatigue property by suppressing surface cracking in a gradient nanostructured bearing steel

被引：58

作者：

Zhang, K. ^{[1
]}

Wang, Z. B. ^{[1
]}

Lu, K. ^{[1
]}

机构：

[1] Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China

来源：

MATERIALS RESEARCH LETTERS | 2017年 / 5卷 / 04期

关键词：

Gradient nanostructured; surface mechanical rolling treatment; AISI 52100 bearing steel; fatigue; surface crack initiation; MECHANICAL ATTRITION TREATMENT; LONG-LIFE FATIGUE; HIGH-CYCLE REGIME; STAINLESS-STEEL; BEHAVIOR; LAYER; NANOCRYSTALLIZATION; RESISTANCE; IMPROVEMENT;

D O I：

10.1080/21663831.2016.1253625

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A gradient nanostructured (GNS) surface layer was generated on an ultrahigh strength bearing steel (AISI 52100) by surface mechanical rolling treatment (SMRT). The initial martensite plates with cementite and retained austenite were transformed into nanograined martensite with a mean size of similar to 24 nm at the topmost surface. Axial tension-compression fatigue tests showed that an enhanced fatigue property was achieved on the GNS sample due to the suppressed fatigue crack initiation at the surface. Effects from hardness, microstructure, and residual stress in the GNS surface layer were discussed in relation with the fatigue mechanism of the SMRT sample.

引用

页码：258 / 266

页数：9

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