Manipulating local heat accumulation towards controlled quality and microstructure of a Co-Cr-Mo alloy in powder bed fusion with electron beam

Y. Zhao, Yuichiro Koizumi, K. Aoyagi, K. Yamanaka, Akihiko Chiba

研究成果: Article査読

3 被引用数 (Scopus)

抄録

Controlled forming quality and solidification microstructure are crucial issues for the application of additive manufactured metal. The local heat accumulation through a line order hatching strategy was considered when a Co-28Cr-6Mo alloy was fabricated by powder bed fusion with electron beam. The study revealed that by weakening the local heat accumulation, overheating as a source of unevenness was easily avoided. Transient geometry of the molten pool and associated temperature gradient direction were determined by the local heat accumulation, which subsequently alters the solidification microstructure. The numerical simulations were performed to clarify the mechanisms involved.

本文言語English
ページ(範囲)269-272
ページ数4
ジャーナルMaterials Letters
254
DOI
出版ステータスPublished - 2019 11 1

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

フィンガープリント

「Manipulating local heat accumulation towards controlled quality and microstructure of a Co-Cr-Mo alloy in powder bed fusion with electron beam」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル