Effect of recrystallization and heat treatment on strength and SCC of an Al-Zn-Mg-Cu alloy

被引：54
作者：
Chen, Songyi [1 ]
Chen, Kanghua [1 ]
Dong, Pengxuan [1 ]
Ye, Shengping [1 ]
Huang, Lanping [1 ]
机构：
[1] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 581卷
基金：
中国国家自然科学基金;
关键词：
Al-Zn-Mg-Cu alloy; Recrystallization; Heat treatment; Strength; Stress corrosion cracking; STRESS-CORROSION CRACKING; 7050; ALUMINUM-ALLOY; ZR ALLOY; HYDROGEN EMBRITTLEMENT; MICROSTRUCTURE; RESISTANCE; AA7050; TOUGHNESS; QUENCH; PLATE;
D O I：
10.1016/j.jallcom.2013.07.177
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The influences of recrystallization and heat treatment on strength, stress corrosion cracking (SCC) of an Al-Zn-Mg-Cu alloy have been investigated by tensile testing, slow strain rate testing combined with scanning electron microscope (SEM) and transmission electron microscope (TEM). The results show that with increasing the volume fraction of recrystallization, the strength and SCC-resistance decrease, and the predominated fracture mode transforms from transgranular fracture to intergranular fracture. Over-aging reduces the effect of recrystallization on SCC susceptibility. The differences of strength and SCC resistance are explained on the basis of the role of recrystallization and grain boundary precipitates. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：705 / 709
页数：5
相关论文
共 24 条
  • [1] HYDROGEN EMBRITTLEMENT AND TRAPPING IN AL-6-PERCENT-ZN-3-PERCENT-MG
    CHRISTODOULOU, L
    FLOWER, HM
    [J]. ACTA METALLURGICA, 1980, 28 (04): : 481 - 487
  • [2] Relationship between fracture toughness, fracture path, and microstructure of 7050 aluminum alloy: Part I. Quantitative characterization
    Deshpande, NU
    Gokhale, AM
    Denzer, DK
    Liu, J
    [J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1998, 29 (04): : 1191 - 1201
  • [3] GRAIN-STRUCTURE AND QUENCH-RATE EFFECTS ON STRENGTH AND TOUGHNESS OF AA7050 AL-ZN-MG-CU-ZR ALLOY PLATE
    DORWARD, RC
    BEERNTSEN, DJ
    [J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1995, 26 (09): : 2481 - 2484
  • [4] GRAIN-BOUNDARY PRECIPITATION IN ALUMINUM-ALLOYS - EFFECT OF BOUNDARY STRUCTURE
    GRONSKY, R
    FURRER, P
    [J]. METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1981, 12 (01): : 121 - 127
  • [5] Effect of solution treatment on the strength and fracture toughness of aluminum alloy 7050
    Han, N. M.
    Zhang, X. M.
    Liu, S. D.
    He, D. G.
    Zhang, R.
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2011, 509 (10) : 4138 - 4145
  • [6] Recent development in aluminium alloys for aerospace applications
    Heinz, A
    Haszler, A
    Keidel, C
    Moldenhauer, S
    Benedictus, R
    Miller, WS
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2000, 280 (01): : 102 - 107
  • [7] Hiramatsu T., 1972, J JAP I LIGHT METALS, V22, P701
  • [8] Itoh Goroh, 2008, Journal of Japan Institute of Light Metals, V58, P15, DOI 10.2464/jilm.58.15
  • [9] Enhancing stress corrosion cracking resistance in Al-Zn-Mg-Cu-Zr alloy through inhibiting recrystallization
    Kannan, M. Bobby
    Raja, V. S.
    [J]. ENGINEERING FRACTURE MECHANICS, 2010, 77 (02) : 249 - 256
  • [10] PERIPHERAL-RECRYSTALLIZED STRUCTURES FORMED IN AL-ZN-MG-CU-ZR ALLOY MATERIALS DURING EXTRUSION AND THEIR QUENCHING SENSITIVITY
    KIKUCHI, S
    YAMAZAKI, H
    OTSUKA, T
    [J]. JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 1993, 38 (04) : 689 - 701
123