Erosion resistance and particle erosion-induced tensile embrittlement of 3d-selective laser melting inconel 718 superalloy

研究成果: Article

摘要

We used selective laser melting (SLM) Inconel 718 (coded AS) to carry out three heat treatment processes: (1) double aging (coded A), (2) solid solution + A (coded SA), (3) homogenization + SA (coded HSA) in order to investigate the effects of microstructure changes and tensile strength enhancement on erosion resistance. The as-SLM IN718 and three heat-treated specimens were subjected to clarify the effects of erosion-induced phase transformation on tensile mechanical properties. All heat-treated specimens showed better erosion resistance than as-SLM IN718 did at all impact angles. The as-SLM IN718 and the three heat-treated specimens produced new γ phase or metal-oxide via particle erosion, which increased the surface hardness of the material. The thickness of the erosion affected zone is 200 µm, which is the main cause of tensile embrittlement.

原文English
文章編號21
期刊Metals
10
發行號1
DOIs
出版狀態Published - 2020 一月

    指紋

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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