...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Science and Engineering >Effects of semisolid treatment and ECAP on the microstructure and mechanical properties of Mg-6.52Zn-0.95Y alloy with icosahedral phase
【24h】

Effects of semisolid treatment and ECAP on the microstructure and mechanical properties of Mg-6.52Zn-0.95Y alloy with icosahedral phase

机译：半固态处理和ECAP对二十面体相Mg-6.52Zn-0.95Y合金的组织和力学性能的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The microstructure evolutions and mechanical properties of Mg-6.52Zn-0.95Y (wt%) alloy with icosahedral phase (I-phase) by semisolid treatment and equal channel angular processing (ECAP) were systematically investigated. After semisolid treatment, lamellar ultra-fine eutectic phases with spacing of 100 +/- 19 nm formed at the grain boundaries. After subsequent 4 passes ECAP, fine grains (2.9 +/- 0.4 gm) were obtained and the lamellar eutectic phases were fragmented into 50-500 nm granular particles. The best comprehensive mechanical properties with ultimate tensile strength (UTS) of 385 +/- 18 MPa, tensile yield strength (TYS) of 290 +/- 3 MPa and elongation to failure (EL) of 22.0 +/- 1.6% were obtained by the combination of semisolid treatment and subsequent 2 passes ECAP at 300 degrees C followed by 2 passes ECAP at 200 degrees C, compared with that by the initial alloy. The improvement of mechanical properties results from combined effects of the grain refinement, dispersion of nanoscale I-phase particles and weakened basal texture. In addition, the I-phase particles contributed to the grain refinement during dynamic recrystallization by particle stimulated nucleation (PSN), which contributed to both strength and ductility. The average Schmid factor (SF) of basal slip increased from 0.2 to 0.4 after semisolid treatment and ECAP processing, which benefit the ductility.
机译：通过半固态处理和等通道角加工（ECAP），系统地研究了具有二十面体相（I相）的Mg-6.52Zn-0.95Y（wt％）合金的组织演变和力学性能。经过半固态处理后，在晶界处形成了间距为100 +/- 19 nm的层状超细共晶相。在随后的4次ECAP通过之后，获得了细颗粒（2.9 +/- 0.4 gm），并将层状共晶相破碎成50-500 nm的颗粒状颗粒。通过以下方法获得了最佳的综合机械性能：极限拉伸强度（UTS）为385 +/- 18 MPa，拉伸屈服强度（TYS）为290 +/- 3 MPa，断裂伸长率（EL）为22.0 +/- 1.6％与初始合金相比，半固态处理和随后的两次通过300℃的ECAP和随后的两次通过200℃的ECAP的组合。力学性能的改善是由于晶粒细化，纳米级I相颗粒的分散和基础纹理的减弱共同作用的结果。此外，I相颗粒通过颗粒激发成核（PSN）促进了动态再结晶过程中的晶粒细化，从而增强了强度和延展性。经过半固态处理和ECAP处理后，基层滑移的平均Schmid因子（SF）从0.2增加到0.4，这有利于延展性。

著录项

  • 来源
    《Materials Science and Engineering》 |2019年第28期|283-291|共9页
  • 作者

    Li K. N.; Zhang Y. B.; Zeng Q.; Huang G. H.; Ji B.; Yin D. D.;

  • 作者单位

    Southwest Jiaotong Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Technol Mat, Chengdu 610031, Sichuan, Peoples R China;

    Southwest Jiaotong Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Technol Mat, Chengdu 610031, Sichuan, Peoples R China;

    Southwest Jiaotong Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Technol Mat, Chengdu 610031, Sichuan, Peoples R China;

    Southwest Jiaotong Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Technol Mat, Chengdu 610031, Sichuan, Peoples R China;

    Southwest Jiaotong Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Technol Mat, Chengdu 610031, Sichuan, Peoples R China;

    Southwest Jiaotong Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Technol Mat, Chengdu 610031, Sichuan, Peoples R China;

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

    Mg-Zn-Y alloys; Icosahedral quasicrystal; Semisolid treatment; ECAP; Mechanical properties;

    机译：Mg-Zn-Y合金;二十面体准晶体;半固态处理;ECAP;力学性能;

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