Asymmetric Rolling and RRA Technology for High Strength Aluminum Alloy

Yuan Du; Kang Minglong; Zeng Jianmin

doi:10.15980/j.tzzz.2013.11.008

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Asymmetric Rolling and RRA Technology for High Strength Aluminum Alloy
Vol. 33, Issue 11, Pages: 1049-1053(2013)
Published： 2013 ，
DOI： 10.15980/j.tzzz.2013.11.008

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[1]袁渡,康明龙,曾建民.高强铝合金错位轧制及RRA技术[J].特种铸造及有色合金,2013,33(11):1049-1053.

Yuan Du, Kang Minglong, Zeng Jianmin. Asymmetric Rolling and RRA Technology for High Strength Aluminum Alloy. [J]. Special Casting & Nonferrous Alloys 33(11):1049-1053(2013)
[1]袁渡,康明龙,曾建民.高强铝合金错位轧制及RRA技术[J].特种铸造及有色合金,2013,33(11):1049-1053. DOI： 10.15980/j.tzzz.2013.11.008.

Yuan Du, Kang Minglong, Zeng Jianmin. Asymmetric Rolling and RRA Technology for High Strength Aluminum Alloy. [J]. Special Casting & Nonferrous Alloys 33(11):1049-1053(2013) DOI： 10.15980/j.tzzz.2013.11.008.

摘要

常规的轧制技术应用在铝合金中厚板的生产中

轧件中心部位变形量不足

导致轧件中心与表面组织性能差异。错位轧制工艺以有限的压下量实现更大的变形

提高了轧板组织与性能的均匀性。RRA（回归再时效）工艺兼顾高强铝合金的力学性能与耐腐蚀性

两种技术均能一定程度满足该领域对材料的需求。通过对高强铝合金的错位热轧和回归再时效工艺（RRA）的综述

评介了高强铝合金中厚板生产中所涉及的最新轧制和热处理技术。

Abstract

Normal rolling technology can cause difference of performance between the center and the surface of the rolling samples as a result of adequate deformation in the center

while asymmetric rolling can assure the homogeneity of the structures and properties of rolling plates in the central and surface due to realizing the severe deformation with a lower reduction.RRA（Retrogression and Re-Aging）heat treatment could improve SCC properties of the high strength alloys without decreasing their strength.Two technologies above mentioned could meet the requirements of aerospace industry.The new hot rolling and heat treatment technology

especially the asymmetric Rolling and RRA for the middle-thick plate production

were reviewed.