Weakest region analysis of non-combustible Mg products fabricated by selective laser melting

Bryan Proaño, Hirofumi Miyahara, Toshiharu Matsumoto, Shigeru Hamada, Hitoshi Sakai, Kiyoshi Ogawa, Suyalatu, Hiroshi Noguchi

研究成果: ジャーナルへの寄稿学術誌査読

11 被引用数 (Scopus)

抄録

In this study, several Mg-9%Al-2%Ca alloy specimens were made using selective laser melting process (SLM) and subsequently subjected to tensile testing. Results showed that the microstructure of this specimen consist of fine grain, which serves to harden the material, and coarse grain, which is defined by the relatively slowly cooled region, softening the material and increasing its plasticity. The coarse grain tended to preferentially solidify immediately below the outer surface of the sample, which could lead to a stable crack propagation that originated from a defect located at the surface as a consequence of the intrinsic irregularity of SLM processes, the effects of which must be considered in order to determine the fracture toughness. Based on this information, corresponding measures can be provided in order to improve the process stability for non-combustible magnesium products.

本文言語英語
論文番号102291
ジャーナルTheoretical and Applied Fracture Mechanics
103
DOI
出版ステータス出版済み - 10月 2019

!!!All Science Journal Classification (ASJC) codes

  • 材料科学(全般)
  • 凝縮系物理学
  • 機械工学
  • 応用数学

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