+高级检索
改造Ti-24Al-15Nb-1.5Mo/TC11双合金焊缝组织与增强连接界面性能的工艺
DOI:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

国家自然科学基金资助(50775187)


Craft of Improving Microstructure and Properties of Ti-24Al-15Nb-1.5Mo/TC11
Author:
Affiliation:

Fund Project:

  • 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:

    研究近等温锻造+梯度热处理工艺对Ti-24Al-15Nb-1.5Mo/TC11双合金焊接接头的显微硬度变化、合金元素扩散趋势、显微组织特征和拉伸性能的影响。结果表明:近等温锻造+梯度热处理能使焊接接头得到强化。经近等温锻造和梯度热处理后焊缝熔合区形成的马氏体α′和α″相分解为α(α2)+β的平衡组织;TC11合金热影响区的魏氏组织转变为网篮组织;试样具有良好的500 ℃高温综合性能(σb: 840 MPa,δ: 18.5%,ψ: 65%)

    Abstract:

    The effect of near isothermal forging and gradient heat treatment on the micro-hardness distribution, the trend of elements diffusion, the microstructure and tensile property have been investigated for the welding Ti-24Al-15Nb-1.5Mo/TC11 dual alloys joint. The results show that the joint can be strengthened through near isothermal forging and gradient heat treatment. During heat working, the martensite a’ phase and a2 phase in fusion zone of joint are breaken up into a balance microstructure consisting of a (a2) phase + b phase. The Widmanstatten structure changes into the basket weave structure in the alloy TC11 heat-affected zone of joint. In addition, the joint has excellent high temperature properties after near isothermal deformation and gradient heat treatment (sb is 840 MPa, d is 18.5%, and y is 65%)

    参考文献
    相似文献
    引证文献
引用本文

高 峻,姚泽坤,刘莹莹,郭鸿镇,杨航航.改造Ti-24Al-15Nb-1.5Mo/TC11双合金焊缝组织与增强连接界面性能的工艺[J].稀有金属材料与工程,2009,38(11):2043~2047.[Gao Jun, Yao Zekun, Liu Yingying, Guo Hongzhen, Yang Hanghang. Craft of Improving Microstructure and Properties of Ti-24Al-15Nb-1.5Mo/TC11[J]. Rare Metal Materials and Engineering,2009,38(11):2043~2047.]
DOI:[doi]

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:2008-11-09
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期:
  • 出版日期: