• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Science and Engineering >Heterogeneous microstructure and associated mechanical properties of thick electron beam welded Ti-5Al-2Sn-2Zr-4Mo-4Cr alloy joint
【24h】

Heterogeneous microstructure and associated mechanical properties of thick electron beam welded Ti-5Al-2Sn-2Zr-4Mo-4Cr alloy joint

机译：厚电子束焊接Ti-5Al-2SN-2ZR-4MO-4CR合金接头的异质组织和相关机械性能

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 non-uniform temperature field and cooling rates in the molten pool during solidification process fabricate microstructural and mechanical heterogeneities in fusion zone (FZ) and heat-affected zone (HAZ) of thick titanium alloy weldment. In this study, electron beam welding was used to assemble thick Ti-5Al-2Sn-2Zr-4Mo-4Cr (TC17) alloy plates. Microstructural heterogeneity concerning recrystallized martensitic structures with different morphology and distribution features in FZ and retained microstructures after experiencing thermal exposure in HAZ were analyzed to unravel their effects on multiscale mechanical behavior. It was found that needle-shaped martensite (α') exhibited a comparative high nano hardness and the precipitation of needle-shaped martensite cluster contributed to a more severe tensile strain localization in FZ and premature brittle fracture of the joint. The bottom layer of weldment, where the FZ was verified to be martensitic free, exhibited a better combination of strength and ductility. Mo and Al exhibited a better thermostability than Cr, which held the responsibility for the microstructural stability in HAZ during severe thermal exposure after welding.
机译：凝固过程中熔池中的非均匀温度场和冷却速率在熔融区（FZ）和厚钛合金焊机中的热影响区（HAZ）中的微观结构和机械异质性。在该研究中，电子束焊接用于组装厚的Ti-5Al-2SN-2ZR-4MO-4CR（TC17）合金板。分析了在HAZ中经历热暴露后的FZ和保留微观结构中具有不同形态和分布特征的重结晶马氏体结构的微观结构异质性，以解析其对多尺度机械行为的影响。发现针状马氏体（α'）表现出比较高纳米硬度，针状马氏体聚类的沉淀有助于FZ中的更严重的拉伸应变局部化和接头的过早脆性骨折。焊接底层，验证FZ是马氏体无马的，表现出更好的强度和延展性组合。 Mo和A1表现出比CR更好的热稳定性，这对焊接后严重的热暴露过程中HAZ中的微观结构稳定性负责。

著录项

  • 来源
    《Materials Science and Engineering》 |2021年第21期|141850.1-141850.11|共11页
  • 作者

    Hanqing Liu; Jim Song; Haomin Wang; Yaohan Du; Kun Yang; Yongjie Liu; Qingyuan Wang; Qiang Chen;

  • 作者单位

    Failure Mechanics and Engineering Disaster Prevention and Mitigation Key Laboratory of Sichuan Province Sichuan University Chengdu 610065 Sichuan China Department of Mechanical Engineering Kyushu University Fukuoka 819-0395 Japan;

    Failure Mechanics and Engineering Disaster Prevention and Mitigation Key Laboratory of Sichuan Province Sichuan University Chengdu 610065 Sichuan China;

    Institute for Advanced Study Chengdu University Chengdu 610106 China;

    Failure Mechanics and Engineering Disaster Prevention and Mitigation Key Laboratory of Sichuan Province Sichuan University Chengdu 610065 Sichuan China;

    Department of Mechanical Engineering Kyushu University Fukuoka 819-0395 Japan Institute for Advanced Study Chengdu University Chengdu 610106 China;

    Failure Mechanics and Engineering Disaster Prevention and Mitigation Key Laboratory of Sichuan Province Sichuan University Chengdu 610065 Sichuan China;

    Failure Mechanics and Engineering Disaster Prevention and Mitigation Key Laboratory of Sichuan Province Sichuan University Chengdu 610065 Sichuan China;

    Department of Mechanical Engineering Kyushu University Fukuoka 819-0395 Japan;

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

    TC17 titanium alloy; Nanomechanical behavior; Microstructural thermostability; Digital image correlation; Stress induced martensitic transformation;

    机译：TC17钛合金;纳米力学行为;微观结构热稳定性;数字图像相关;压力诱导马氏体转变;

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