Optimisation of the fatigue resistance of 2024-T351 aluminium alloys by controlled shot peening - methodology, results and analysis

被引：112

作者：

Rodopoulos, CA

Curtis, SA

de los Rios, ER

SolisRomero, J

机构：

[1] Sheffield Hallam Univ, Mat Engn Res Inst, Sheffield S1 1WB, S Yorkshire, England

[2] Univ Sheffield, Dept Engn Mech, Struct Integrit Res Inst, Sheffield S1 3JD, S Yorkshire, England

[3] Inst Technol Tlalnepantla, Mexico City 54070, DF, Mexico

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2004年 / 26卷 / 08期

基金：

英国工程与自然科学研究理事会;

关键词：

controlled shot peening; fatigue life; residual stresses; surface roughness;

D O I：

10.1016/j.ijfatigue.2004.01.003

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 [机械工程];

摘要：

A methodology dedicated to the optimisation of the fatigue properties of aluminium alloys by controlled shot peening is presented. Selection of the peening conditions is made out of the use of the Design of Experiment and the Effects Neutralisation Model. Both techniques allowed the optimisation both in terms of life and crack growth rates. Experimental determination and further analysis of the residual stress relaxation patterns revealed that at high stress levels, low cycle fatigue, life improvement is predominantly due to slow crack growth rates, while in high cycle fatigue the extension of life is attributed to a prolonged period of crack arrest. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：849 / 856

页数：8

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