Fatigue strength of ultra-fine grained steels

被引：54

作者：

Chapetti, MD

Miyata, H

Tagawa, T

Miyata, T

Fujioka, A

机构：

[1] Univ Mar del Plata, INTEMA, Mar Del Plata, Argentina

[2] Nagoya Univ, Dept Mat Sci & Engn, Nagoya, Aichi 4648603, Japan

[3] Nippon Steel Corp Ltd, Steel Res Labs, Futtsu, Chiba, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2004年 / 381卷 / 1-2期

关键词：

ultra-fine grained steel; fatigue limit; fatigue notch sensitivity;

D O I：

10.1016/j.msea.2004.04.055

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Fatigue strength of two ultra-fine grained steels (grain sizes 0.8 and 1 mum) was investigated. A coarse grained (grain size 12.5 mum) SM490 steel with a similar chemical composition was also analysed for comparison purpose. An important improvement on smooth fatigue strength was observed in ultra-fine grained steels and results obey the Hall-Petch relation usually observed between smooth fatigue limit and grain size. High fatigue notch sensitivity was observed and no improvement in fatigue limit of sharp notches is expected. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：331 / 336

页数：6

共 24 条

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