Mitigating Intergranular Stress Corrosion Cracking in Age-Hardenable Al-Zn-Mg-Cu Alloys

被引：26
|
作者：
Krishnan, M. Ajay [1 ]
Raja, V. S. [1 ]
Shukla, Shweta [1 ]
Vaidya, S. M. [2 ]
机构：
[1] Indian Inst Technol, Dept Met Engn & Mat Sci, Bombay 400076, Maharashtra, India
[2] Godrej Aerosp, Bombay 400076, Maharashtra, India
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2018年 / 49A卷 / 06期
关键词：
HYDROGEN EMBRITTLEMENT; ALUMINUM-ALLOYS; SCC-RESISTANCE; STRENGTH; BEHAVIOR; SUSCEPTIBILITY; RETROGRESSION; ELECTROCHEMISTRY; PRECIPITATION; IMPROVEMENTS;
D O I：
10.1007/s11661-018-4601-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This article reports an attempt to develop high-strength aluminum alloys of 7xxx series resistant to intergranular stress corrosion cracking (SCC). A novel aging technique reported in this work exhibited improved strength levels (as high as similar to 100 MPa to that of conventional overaged temper for AA 7050) with significant resistance to SCC measured even at a low strain rate (10(-7) s(-1)) in 3.5 wt pct NaCl. The novel aging heat treatment produced a microstructure that is finer and dense enough in the matrix to impart strength, whereas it is enriched with Cu on the grain boundaries to impart SCC resistance. A detailed explanation for the enhanced strength and SCC resistance is discussed. (C) The Minerals, Metals & Materials Society and ASM International 2018
引用
收藏
页码：2487 / 2498
页数：12
相关论文
共 50 条
  • [1] Mitigating Intergranular Stress Corrosion Cracking in Age-Hardenable Al-Zn-Mg-Cu Alloys
    M. Ajay Krishnan
    V. S. Raja
    Shweta Shukla
    S. M. Vaidya
    Metallurgical and Materials Transactions A, 2018, 49 : 2487 - 2498
  • [2] STUDIES OF INTERGRANULAR CRACK-PROPAGATION IN AGE-HARDENABLE AL-ZN-MG ALLOYS
    NIEGEL, A
    GUDLADT, HJ
    ZEITSCHRIFT FUR METALLKUNDE, 1991, 82 (03): : 217 - 224
  • [3] Effect of the deformation on the stress-corrosion cracking of Al-Zn-Mg-Cu alloys
    Peng, G. S.
    Chen, K. H.
    Chen, S. Y.
    Fang, H. C.
    MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION, 2012, 63 (03): : 254 - 258
  • [4] Stress Corrosion Cracking in Al-Zn-Mg-Cu Aluminum Alloys in Saline Environments
    Holroyd, N. J. Henry
    Scamans, G. M.
    METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2013, 44A (03): : 1230 - 1253
  • [5] Residual stress and its corrosion cracking behavior of Al-Zn-Mg-Cu alloys
    Zailiang, C
    HEAT TREATING: PROCEEDINGS OF THE 16TH CONFERENCE, 1996, : 239 - 242
  • [6] Stress Corrosion Cracking in Al-Zn-Mg-Cu Aluminum Alloys in Saline Environments
    N. J. Henry Holroyd
    G. M. Scamans
    Metallurgical and Materials Transactions A, 2013, 44 : 1230 - 1253
  • [7] Quench rate sensitivity of age-hardenable Al-Zn-Mg-Cu alloys with respect to the Zn/Mg ratio: An in situ SAXS and HEXRD study
    Graf, Gloria
    Spoerk-Erdely, Petra
    Staron, Peter
    Stark, Andreas
    Martin, Fransisca Mendez
    Clemens, Helmut
    Klein, Thomas
    ACTA MATERIALIA, 2022, 227
  • [8] Some effects of alloy composition on stress corrosion cracking in Al-Zn-Mg-Cu alloys
    Knight, S. P.
    Pohl, K.
    Holroyd, N. J. H.
    Birbilis, N.
    Rometsch, P. A.
    Muddle, B. C.
    Goswami, R.
    Lynch, S. P.
    CORROSION SCIENCE, 2015, 98 : 50 - 62
  • [9] A POSITRON STUDY OF AGE-HARDENABLE AL-ZN-MG ALLOYS
    DLUBEK, G
    BRUMMER, O
    HAUTOJARVI, P
    YLIKAUPPILA, J
    PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1981, 44 (01): : 239 - 248
  • [10] Effect of Exposure Time on Stress Corrosion Cracking Susceptibility of Al-Zn-Mg-Cu Alloys
    An, Jaehyun
    Lee, Minsik
    Euh, Kwang Jun
    Jung, Im Doo
    Kim, Sangshik
    Sung, Hyokyung
    SCIENCE OF ADVANCED MATERIALS, 2020, 12 (11) : 1666 - 1672
12345