Process parameter optimization framework for the selective laser melting of hastelloy x alloy considering defects and solidification crack occurrence

Houichi Kitano, Masahiro Kusano, Masakazu Tsujii, Atsushi Yumoto, Makoto Watanabe

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Recent years have witnessed increasing demand for selective laser melting (SLM) in practical applications; however, determining the appropriate process parameter range remains challeng-ing. In this study, a framework was developed to determine the appropriate process parameter range considering the occurrence of defects and cracks by conducting a single-track test and thermal elastoplastic analysis. Keyholing, balling, and the residual unmelted regions were considered de-fects. The occurrence of solidification cracking, which is predominant in the SLM of solution-strengthened Ni-based alloys, was considered. Using the proposed framework, we could fabricate a part with largely no defects or cracks, except for the edges, under the determined optimal process parameters.

Original languageEnglish
Article number578
JournalCrystals
Volume11
Issue number6
DOIs
Publication statusPublished - 2021 Jun

Keywords

  • Defect
  • Hastelloy X
  • Process optimization
  • Selective laser melting
  • Solidification cracking
  • Thermal elastoplastic analysis

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Inorganic Chemistry

Fingerprint

Dive into the research topics of 'Process parameter optimization framework for the selective laser melting of hastelloy x alloy considering defects and solidification crack occurrence'. Together they form a unique fingerprint.

Cite this