The effect of pre-ageing temperature and retrogression heating rate on the microstructure and properties of AA7055

被引：42
作者：
Feng, D. [1 ,2 ]
Zhang, X. M. [1 ,2 ]
Liu, S. D. [1 ,2 ]
Wang, T. [1 ,2 ]
Wu, Z. Z. [1 ,2 ]
Guo, Y. W. [1 ,2 ]
机构：
[1] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China
[2] Cent S Univ, Minist Educ, Key Lab Nonferrous Met Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2013年 / 588卷
关键词：
Pre-ageing temperature; Retrogression; Heating rate; AA7055; Thick plate; Mechanical property; ZN-MG ALLOY; ALUMINUM-ALLOY; MECHANICAL-PROPERTIES; PRECIPITATION; BEHAVIOR; CORROSION; STRENGTH; AA7150; RRA;
D O I：
10.1016/j.msea.2013.09.011
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The effect of pre-ageing temperature and retrogression heating rate variations on the mechanical properties and electrical conductivity of the RRA treated AA7055 has been investigated. The microstructures under various RRA treated samples are discussed in detail. The results reveal that, near peak aged state plus slow retrogression heating is more applicable for industrial processing. Under the pre-ageing at 105 degrees C/24 h and a slow retrogression heating rate of 3 degrees C/min condition, RRA-treated samples possess a better combination of both strength and electrical conductivity than the 16 or 773 states. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：34 / 42
页数：9
相关论文
共 20 条
[1]   Secondary ageing in an aluminium alloy 7050 [J].
Buha, J. ;
Lumley, R. N. ;
Crosky, A. G. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 492 (1-2) :1-10
[2]  
Cina B.M., 1974, US Patent, P12, Patent No. 3856584
[3]   Investigation of fine scale precipitates in Al-Zn-Mg alloys after various heat treatments [J].
Engdahl, T ;
Hansen, V ;
Warren, PJ ;
Stiller, K .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2002, 327 (01) :59-64
[4]   Effect of heat treatment on the microstructure and mechanical properties of the spray-deposited Al-10.8Zn-2.8Mg-1.9Cu alloy [J].
Feng, Wang ;
Xiong Baiqing ;
Zhang Yongan ;
Zhu Baohong ;
Liu Hongwei ;
He Xiaoqing .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 486 (1-2) :648-652
[5]  
KANNO M, 1994, MATER SCI TECH SER, V10, P599, DOI 10.1179/026708394790164202
[6]   Effects of retrogression heating rate on microstructures and mechanical properties of aluminum alloy 7050 [J].
Li Guo-feng ;
Zhang Xin-ming ;
Li Peng-hui ;
You Jiang-hai .
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2010, 20 (06) :935-941
[7]   Influence of retrogression temperature and time on the mechanical properties and exfoliation corrosion behavior of aluminium alloy AA7150 [J].
Li, J. F. ;
Birbilis, N. ;
Li, C. X. ;
Jia, Z. Q. ;
Cai, B. ;
Zheng, Z. Q. .
MATERIALS CHARACTERIZATION, 2009, 60 (11) :1334-1341
[8]   Evolution of precipitate microstructures during the retrogression and re-ageing heat treatment of an Al-Zn-Mg-Cu alloy [J].
Marlaud, T. ;
Deschamps, A. ;
Bley, F. ;
Lefebvre, W. ;
Baroux, B. .
ACTA MATERIALIA, 2010, 58 (14) :4814-4826
[9]   Characterisation and modelling of precipitate evolution in an Al-Zn-Mg alloy during non-isothermal heat treatments [J].
Nicolas, M ;
Deschamps, A .
ACTA MATERIALIA, 2003, 51 (20) :6077-6094
[10]   The effect of RRA on the strength and SCC resistance on AA7050 and AA7150 aluminium alloys [J].
Oliveira, AF ;
de Barros, MC ;
Cardoso, KR ;
Travessa, DN .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 379 (1-2) :321-326
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