首页> 外文期刊>Materials Science and Engineering >Influence of alloyed Sc and Zr, and heat treatment on microstructures and stress corrosion cracking of Al-Zn-Mg-Cu alloys
【24h】

Influence of alloyed Sc and Zr, and heat treatment on microstructures and stress corrosion cracking of Al-Zn-Mg-Cu alloys

机译:合金化的Sc和Zr以及热处理对Al-Zn-Mg-Cu合金的组织和应力腐蚀开裂的影响

获取原文
获取原文并翻译 | 示例
           

摘要

Stress corrosion cracking (SCC) behavior of Al-Zn-Mg-Cu alloys with different Sc, Zr contents and heat treatments was studied using slow strain rate test. Grain boundary microstructures were identified by transmission electron microscopy (TEM) and statistical analysis. It was found that the SCC resistance of alloys is improved by increasing Sc, Zr contents and aging degree. Grain boundary precipitates (GBPs) area fraction was found to be an important parameter to evaluate the SCC susceptibility. The results reveal that for Al-Zn-Mg-Cu-0.25Sc-0.10Zr (wt%) alloy with different aging degrees, hydrogen induced cracking dominates the SCC when the area fraction of GBPs is relatively low. For peak-aged Al-Zn-Mg-Cu alloy and Al-Zn-Mg-Cu-0.10Sc-0.10Zr (wt%) alloy, anodic dissolution dominates the SCC when the area fraction of GBPs is sufficiently high.
机译:利用慢应变速率试验研究了不同Sc,Zr含量和热处理的Al-Zn-Mg-Cu合金的应力腐蚀开裂(SCC)行为。通过透射电子显微镜(TEM)和统计分析鉴定了晶界的微观结构。发现通过增加Sc,Zr含量和时效程度可以提高合金的耐SCC性。发现晶界沉淀物(GBPs)面积分数是评估SCC敏感性的重要参数。结果表明,对于不同时效程度的Al-Zn-Mg-Cu-0.25Sc-0.10Zr(wt%)合金,当GBPs的面积分数相对较低时,氢致裂纹占SCC的主导地位。对于峰值时效的Al-Zn-Mg-Cu合金和Al-Zn-Mg-Cu-0.10Sc-0.10Zr(wt%)合金,当GBPs的面积分数足够高时,阳极溶出度占主导地位。

著录项

  • 来源
    《Materials Science and Engineering》 |2015年第5期|173-181|共9页
  • 作者单位

    School of Materials Science and Engineering, Central South University, Hunan, Changsha 410083, China;

    School of Materials Science and Engineering, Central South University, Hunan, Changsha 410083, China,Key Laboratory of Nonferrous Materials Science and Engineering of Ministry of Education, Hunan, Changsha 410083, China;

    School of Materials Science and Engineering, Central South University, Hunan, Changsha 410083, China;

    School of Materials Science and Engineering, Central South University, Hunan, Changsha 410083, China;

    School of Materials Science and Engineering, Central South University, Hunan, Changsha 410083, China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Aluminum; Stress corrosion cracking; TEM; Grain boundary;

    机译:铝;应力腐蚀开裂;TEM;晶界;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号