Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

您目前所在的位置:首页 - 期刊简介 - 详细页面

中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 13    No. 5    October 2003

[PDF Download]    [Flash Online]    

    

Evaluation of residual stress relief of aluminum alloy 7050 by using crack compliance method
WANG Qiu-cheng(王秋成)1,2, KE Ying-lin(柯映林)2,
XING Hong-yan(邢鸿燕)3 ,WENG Ze-yu(翁泽宇)1
YANG Fang-er(杨芳儿)1

1.Electromechanical Engineering College,
Zhejiang University of Technology, Hangzhou 310032, China;
2.College of Mechanical and Energy Engineering,
Zhejiang University, Hangzhou 310027, China;
3.Architectural Engineering College,
Zhejiang University of Technology, Hangzhou 310032, China

Abstract:High strength aluminum alloys of 7xxx series have unacceptable levels of quenching residual stresses from solution heat treatment. The residual stress not only results in machining distortion and dimensional instability, but also increases the possibility of stress corrosion cracks. Therefore, it is necessary to reduce the residual stress to an acceptable level. The crack compliance method was adopted to study the influences of various stress relief methods on residual stress patterns in 7050 aluminum alloy. The results show that 90% residual stress can be eliminated by the cold stretching(Tx51) method. And a lower level of residual stress can be achieved by the uphill quenching(Tx53) method or the cold compression(Tx52). However, there is a very steep residual stress gradient normal to exterior surfaces.

 

Key words: aluminum alloy; residual stress; stress relief; evaluation; crack compliance method

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

主管:中国科学技术协会 主办:中国有色金属学会 承办:中南大学
湘ICP备09001153号 版权所有:《中国有色金属学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市岳麓山中南大学内 邮编:410083
电 话:0731-88876765,88877197,88830410   传真:0731-88877197   电子邮箱:f_ysxb@163.com