• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Science and Engineering >Evaluation of residual stresses in isothermal friction stir welded 304L stainless steel plates
【24h】

Evaluation of residual stresses in isothermal friction stir welded 304L stainless steel plates

机译：等温摩擦搅拌焊接304L不锈钢板残留应力的评价

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

Friction stir welding was performed on 304L SS plates in order to heal simulated cracks created by electrical discharge machining. Two different tool temperatures (825 and 725 °C) were chosen for this study. Both neutron diffraction and X-ray diffraction techniques were employed to evaluate the residual stresses along two orthogonal reference directions, longitudinal (σ_(yy)) and transverse (σ_(xx)). The former technique was also used to measure residual stresses at various depths. It was found that, at 1 mm depth from the top surface inside the stir zone (SZ), the longitudinal component was tensile in nature while the transverse component was compressive. The nature and magnitude of the residual stress fields, and the position of the peak residual stresses were found to vary with the weld depth. The SZ of the 725 °C weld exhibited higher peak stress than 825 °C weld mainly due to a lack of stress relief at the lower temperature.
机译：在304LS板上进行摩擦搅拌焊接，以便通过电放电加工产生模拟裂缝。 为本研究选择了两个不同的刀具温度（825和725℃）。 采用中子衍射和X射线衍射技术进行沿两个正交参考方向，纵向（σ_（YY））和横向（σ_（XX））进行评估残余应力。 前一种技术还用于测量各种深度的残余应力。 发现，从搅拌区内的顶表面（SZ）的1mm深度，纵向组分本质上是拉伸的，而横向组分是压缩的。 发现残余应力场的性质和大小，以及峰值残余应力的位置随着焊接深度而变化。 725°C焊缝的Sz显示比825°C焊缝更高的峰值应力，主要是由于较低温度缺乏应力浮雕。

著录项

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