Study on mechanical properties and hydrogen embrittlement susceptibility of 7075 aluminium alloy

被引：10
作者：
Qi, W. J. [1 ,2 ]
Song, R. G. [1 ,2 ]
Zhang, Y. [1 ,2 ]
Wang, C. [1 ,2 ]
Qi, X. [1 ,2 ]
Li, H. [1 ,2 ]
机构：
[1] Changzhou Univ, Sch Mat Sci & Engn, Changzhou 213164, Peoples R China
[2] Changzhou Univ, Jiangsu Key Lab Mat Surface Sci & Technol, Changzhou 213164, Peoples R China
来源：
CORROSION ENGINEERING SCIENCE AND TECHNOLOGY | 2015年 / 50卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Hydrogen embrittlement; Mechanical properties; Mg-H interaction; Aluminium alloy; STRESS-CORROSION CRACKING; GRAIN-BOUNDARY SEGREGATION; BEHAVIOR; MICROSTRUCTURE;
D O I：
10.1179/1743278215Y.0000000004
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The mechanical properties and hydrogen embrittlement susceptibility of 7075 aluminium alloy were studied by means of cathodic H permeation, hydrogen determinator, slow strain rate test (SSRT), energy dispersive X-ray spectroscopy (EDS) and scanning electron microscope (SEM). The results showed that both before and after hydrogen charging, the strength and other properties all have double peaks for the examined alloys, and it was of excellent performance such as high strength and low hydrogen enbrittlement susceptibility under the second aging peak. Mg segregated at grain boundary during aging process, and there may exist Mg-H interaction during the hydrogen charging process, which played a significant role in hydrogen embrittlement.
引用
收藏
页码：480 / 486
页数：7
相关论文
共 24 条
  • [1] Chu W., 2000, FRACTURE ENV FRACTUR
  • [2] Influence of predeformation and ageing of an Al-Zn-Mg alloy - II. Modeling of precipitation kinetics and yield stress
    Deschamps, A
    Brechet, Y
    [J]. ACTA MATERIALIA, 1998, 47 (01) : 293 - 305
  • [3] STRESS-CORROSION AND HYDROGEN EMBRITTLEMENT IN AN ALUMINUM-ALLOY
    GEST, RJ
    TROIANO, AR
    [J]. CORROSION, 1974, 30 (08) : 274 - 279
  • [4] Effects of pre-stretching and ageing on the strength and fracture toughness of aluminum alloy 7050
    Han, NianMei
    Zhang, XinMing
    Liu, ShengDan
    Ke, Bin
    Xin, Xing
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2011, 528 (10-11): : 3714 - 3721
  • [5] Stress Corrosion Cracking in Al-Zn-Mg-Cu Aluminum Alloys in Saline Environments
    Holroyd, N. J. Henry
    Scamans, G. M.
    [J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2013, 44A (03): : 1230 - 1253
  • [6] GUINIER-PRESTON ZONES IN ALUMINIUM-SILVER ALLOY
    KELLY, A
    NICHOLSON, RB
    [J]. ACTA METALLURGICA, 1964, 12 (02): : 277 - &
  • [7] Effects of retrogression heating rate on microstructures and mechanical properties of aluminum alloy 7050
    Li Guo-feng
    Zhang Xin-ming
    Li Peng-hui
    You Jiang-hai
    [J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2010, 20 (06) : 935 - 941
  • [8] Effect of aging on fracture toughness and stress corrosion cracking resistance of forged 7475 aluminum alloy
    Li, Hongying
    Geng, Jinfeng
    Dong, Xianjuan
    Wang, Changjian
    Zheng, Feng
    [J]. JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION, 2007, 22 (02): : 191 - 195
  • [9] Microstructure evolution of 7050 aluminum alloy during hot deformation
    Li Jun-peng
    Shen Jian
    Yan Xiao-dong
    Mao Bai-ping
    Yan Liang-ming
    [J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2010, 20 (02) : 189 - 194
  • [10] Age-hardening behavior of cast Al-Si base alloy
    Li, RX
    Li, RD
    Zhao, YH
    He, LZ
    Li, CX
    Guan, HR
    Hu, ZQ
    [J]. MATERIALS LETTERS, 2004, 58 (15) : 2096 - 2101
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