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


Transactions of Nonferrous Metals Society of China

Vol. 10    No. 6    December 2000

[PDF Download]        


Heat-treatment of2014aluminium alloy forgings with intense strain①
SONG Min(宋 旼)1, ZHANG Xin-ming(张新明) 1, YANG Yang(杨 扬) 1,
ZHOU Zhuo-ping(周卓平) 1, ZENG Su-min(曾苏民) 2, XIAO Ya-qing(肖亚庆)

1. Department of Materials Science and Engineering,
Central South University, Changsha 410083, P.R.China;
2. Southwestern Aluminium Fabrication Plant, Chongqing 401326, P.R.China

Abstract:The triangular 2014 aluminium alloy forgings with intense strain were made by a variety of heat-treatment processes, and their mechanical properties were measured. The results showed that different solution and aging processes have very strong influence on the mechanical properties of the forgings. The forgings with intense strain from multidirectional deformation (deformation coefficientλ=12), which were solutioned at 500℃for 400 min and aged at 165℃for 10 h, show advanced mechanical properties, and almost no anisotropies. The mechanical properties areσb=466MPa,σ0.2 =454 MPa,δ=10.5% along LD;σb=457 MPa,σ0.2=444 MPa,δ=6.3% along TD;σb=449 MPa,σ0.2=433MPa,δ=4.2% along HD. The yield strength of the forgings made by a new process was improved by 30% to 50%, the ultimate tensile strength by 15% to 30% and elongation by 100% to 200%, compared with the mechanical properties of the forgings made by the traditional process. The investigation indicated that the very fine grains (3~6μm) and the submicrophases(0.05~0.15μm), and their homogeneous distribution have made the forgings have the high mechanical properties.


Key words: 2014 aluminium alloy forgings; intense strain; solution; aging; mechanical properties

ISSN 1004-0609
CN 43-1238/TG

ISSN 1003-6326
CN 43-1239/TG

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