+高级检索
高压扭转变形对纯W再结晶行为的影响
作者:
作者单位:

1.合肥工业大学 材料科学与工程学院;2.合肥工业大学材料科学与工程学院

作者简介:

通讯作者:

中图分类号:

TG311

基金项目:

国家自然科学基金项目(面上项目)(项目号51675154),教育部新世纪优秀人才支持计划(NCET-13-0765),国际热核聚变实验堆(ITER)计划专项(2014GB121000)


Effect of High-Pressure Torsion on Recrystallization Behavior of Pure Tungsten
Author:
Affiliation:

Hefei University of Technology

Fund Project:

The National Natural Science Foundation of China (General Program, 51675154),Program for New Century Excellent Talents in University(NCET-13-0765),International Thermonuclear Experimental Reactor (ITER) Program (2014GB121000)

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    在较低温度条件下完成了难熔金属烧结纯W高压扭转实验,通过改变扭转圈数,利用EBSD、XRD、DSC等多种检测与计算方法分析了高压扭转变形纯W在后续加热过程中再结晶组织及行为的变化。结果表明:高压扭转变形后,纯钨组织的形变储存能增大,激活能降低,但变形后组织的再结晶温度仍处于高值。DSC测试后,原始烧结组织发生明显的晶粒长大情况,而由HPT变形产生的细晶钨再结晶组织仍较为细小,平均晶粒尺寸约4-6μm,且随着扭转圈数增大晶粒尺寸未发生明显变化,变形组织的热稳定性较好。

    Abstract:

    The High-pressure torsion(HPT)deformation of sintered pure tungsten was carried out under low temperature condition. Recrystallization microstructures and behavior of pure W during the subsequent heating was analyzed under different torsion turns, which using a variety of detection and calculation methods such as EBSD, XRD and DSC. The results show that the deformation storage energy of pure W increases and the activation energy decreases after HPT deformation, but the recrystallization temperature is still high. Relative to obvious grain growth of the original sintered structure, recrystallized microstructure produced by HPT deformation is still small after DSC testing. The average grain size is about 4-6 μm. With the tortsion turns increases, grain size did not change significantly and deformed tissue is relatively stable.

    参考文献
    相似文献
    引证文献
引用本文

李 萍,林 泉,薛克敏,孙大智,甘国强,吴玉程.高压扭转变形对纯W再结晶行为的影响[J].稀有金属材料与工程,2019,48(5):1677~1681.[Ping Li, Quan Lin, Kemin Xue, Dazhi Sun, Gan Guoqiang, Yucheng Wu. Effect of High-Pressure Torsion on Recrystallization Behavior of Pure Tungsten[J]. Rare Metal Materials and Engineering,2019,48(5):1677~1681.]
DOI:10.12442/j. issn.1002-185X.20171032

复制
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2017-11-15
  • 最后修改日期:2017-12-24
  • 录用日期:2017-12-26
  • 在线发布日期: 2019-06-04
  • 出版日期: