• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Manufacturing Processes >The effects of stress relieving heat treatment on the microstructure and residual stress of Inconel 718 fabricated by laser metal powder bed fusion additive manufacturing process
【24h】

The effects of stress relieving heat treatment on the microstructure and residual stress of Inconel 718 fabricated by laser metal powder bed fusion additive manufacturing process

机译：消除应力热处理对激光金属粉末床熔融增材制造工艺生产的Inconel 718组织和残余应力的影响

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

In this study, the microstructure and residual stress of the Inconel 718 parts, which were fabricated by laser metal powder bed fusion additive manufacturing process, in as-fabricated and stress-relieved conditions were investigated by metallographic analysis and microhardness test. Fine equiaxed and columnar cellular dendrites were revealed in the Transverse plane, Frontal plane, and Sagittal plane, respectively. Laves phases were found in the interdendritic regions and interlayers. After the stress relief heat treatment, the Laves phases has partly solved into the gamma matrix and the microstructure became relatively homogeneous, which leads to the significant increase (similar to 19 %) in the microhardness. Residual stress was unevenly distributed in the parts, and no notable difference was found between the Frontal plane and Sagittal plane. The maximum absolute compressive residual stress dropped from 378.4 MPa to 321 MPa after stress relief due to the homogenization of the microstructure.
机译：本研究通过金相分析和显微硬度测试，研究了在激光加工和消除应力的条件下，通过激光金属粉末床熔融添加剂制造工艺制造的Inconel 718零件的组织和残余应力。细等轴和柱状细胞树突分别在横断面，额叶面和矢状面中显示。在树突间区域和中间层中发现了Laves相。经过应力消除热处理后，拉夫斯相已部分溶解到伽马基体中，并且显微组织变得相对均匀，这导致显微硬度显着提高（约19％）。残余应力在零件中分布不均匀，额叶面和矢状面之间没有显着差异。由于微结构的均质化，应力消除后，最大绝对压缩残余应力从378.4 MPa下降到321 MPa。

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