Impact of gas flow direction on the crystallographic texture evolution in laser beam powder bed fusion

Hiroki Amano, Takuya Ishimoto, Koji Hagihara, Ryoya Suganuma, Keisuke Aiba, Shi Hai Sun, Pan Wang, Takayoshi Nakano*

*この論文の責任著者

研究成果: ジャーナルへの寄稿学術論文査読

17 被引用数 (Scopus)

抄録

This study demonstrated that the gas flow direction in the laser beam powder bed fusion (PBF-LB) significantly affects the crystallographic texture evolved in the products. The effect on texture is attributed to the difference in the melt pool depth, which depends on gas flow direction. The melt pool was shallower when the laser scanning and gas flow directions were parallel than when they were perpendicular. This phenomenon should be of particular concern when applying Scan Strategy_XY wherein the laser was scanned with a 90° rotation in each layer, which is often used in PBF-LB. The asymmetry in the melt pool depth generated by laser scanning in the x- and y-directions can lead to unintended variations in the crystallographic texture. The gas phase would interact with a part being manufactured immediately beneath the gas and affect the crystallographic feature of the product.

本文言語英語
論文番号e2169172
ジャーナルVirtual and Physical Prototyping
18
1
DOI
出版ステータス出版済み - 2023

ASJC Scopus 主題領域

  • 信号処理
  • モデリングとシミュレーション
  • コンピュータ グラフィックスおよびコンピュータ支援設計
  • 産業および生産工学

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