...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Science and Engineering >Experimental investigation into microstructure, mechanical properties, and cracking mechanism of IN713LC processed by laser powder bed fusion
【24h】

Experimental investigation into microstructure, mechanical properties, and cracking mechanism of IN713LC processed by laser powder bed fusion

机译：激光粉床融合综合组织，机械性能和裂解机理的实验研究

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

IN713LC is a Ni-based superalloy with extensive uses in the aerospace industry. However, fabricating IN713LC components using additive manufacturing technologies such as laser powder bed fusion (LPBF) is extremely challenging due to its high composition of alloying elements (e.g., Al and Ti), which increase its susceptibility to cracking. Accordingly, the present study conducts an experimental investigation into the LPBF processing parameters (i.e., laser power and scanning speed) which enable the fabrication of LPBF IN713LC parts with a high relative density and minimal cracking. The effects of heat treatment on the microstructure and mechanical properties of the as-built parts are then examined. The results show that IN713LC is prone to the two micro-cracking mechanisms, namely solidification cracking due to the formation of low-melting-point elements at the grain boundaries and ductility dip cracking (DDC) as a result of grain boundary sliding. However, given an appropriate selection of the LPBF processing conditions, as-built IN713LC components with an average yield strength of 800 MPa, an ultimate tensile strength of 998 MPa, and ultimate elongation of 12.5% at room temperature are better than those of as-cast IN713LC specimens. Notably, the solid solution heat treatment process yields a significant improvement in the yield strength compared to that of the as-built sample. Moreover, all the mechanical properties of the sample processed by solid solution heat treatment are comparable to those of the as-cast IN713LC sample.
机译：In713LC是一款位于航空航天行业广泛用途的NI基超合金。然而，由于其高合金元素（例如，Al和Ti），使用增材制造技术（例如激光粉床融合（LPBF）制造诸如激光粉床融合（LPBF）的构成非常具有挑战性，这增加了其对开裂的敏感性。因此，本研究对LPBF处理参数（即激光功率和扫描速度）进行了实验研究，其使得能够以高相对密度和最小裂缝制造LPBF IN713LC部件。然后检查热处理对制造部件的微观结构和机械性能的影响。结果表明，由于晶界滑动的结果，IN713LC易于两种微裂纹机构，即由于晶界和延展性浸渍裂纹（DDC）的形成低熔点元件而导致的凝固裂缝。 However, given an appropriate selection of the LPBF processing conditions, as-built IN713LC components with an average yield strength of 800 MPa, an ultimate tensile strength of 998 MPa, and ultimate elongation of 12.5% at room temperature are better than those of as-铸造in713lc标本。值得注意的是，与原木样品相比，固体溶液热处理方法产生屈服强度的显着改善。此外，通过固体溶液热处理处理的样品的所有机械性能与AS浇铸IN713LC样品的样品相当。

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