Microstructure and tensile fracture behavior of three-stage heat treated inconel 718 alloy produced via laser powder bed fusion process

Jun Ren Zhao, Fei Yi Hung, Truan Sheng Lui

研究成果: Article同行評審

54 引文 斯高帕斯(Scopus)

摘要

In this study, Laser Powder Bed Fusion (LPBF) Inconel 718 is subjected to various heattreatments, namely double aging, solid solution + double aging, and homogenization +solid-solution + double aging, to investigate the effect of heat treatment on room- and high-temperature tensile properties. The results show that all three heat treatments increasehardness and room-temperature tensile strength, but greatly reduce ductility. With anincrease in tensile test temperature, the stress-induced Portevin-Le Chatelier (PLC) effectcan effectively prevent the occurrence of oxidation at grain boundaries and maintain a cer-tain ductility in the range of room temperature to 600°C. However, when the temperatureis 650°C, the PLC effect disappears, resulting in a high-temperature embrittlement effect.

原文English
頁(從 - 到)3357-3367
頁數11
期刊Journal of Materials Research and Technology
9
發行號3
DOIs
出版狀態Published - 2020

All Science Journal Classification (ASJC) codes

  • 陶瓷和複合材料
  • 生物材料
  • 表面、塗料和薄膜
  • 金屬和合金

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