Melting and solidification behavior of Ti-6Al-4V powder during selective laser melting

Shunya Yamamoto*, Hisashi Azuma, Shinsuke Suzuki, Satoshi Kajino, Naoko Sato, Toshimitsu Okane, Shizuka Nakano, Toru Shimizu


研究成果: Article査読

24 被引用数 (Scopus)


To investigate melting and solidification behavior during selective laser melting (SLM), the shape of the solidified materials and energy balance during SLM were evaluated through temperature measurements with a two-color pyrometer. The laser power and scanning speed were selected as parameters to melt Ti-6Al-4V powder in a square area. The input energy per unit area used during SLM was 5, 10, 16, or 20 J/mm2. The melting depth and width increased as the input energy increased. However, the aspect ratio of the melted area was constant. The mass ratio of melted to sintered material decreased as input energy increased. It was considered that the surplus input energy was used for sintering when the energy was high. Color maps show that the surface temperature distribution around the laser irradiation area was asymmetric, in which the temperature gradient at the solidified material side was smoother than that at powder side. The temperature history showed that melting and solidification occurred repeatedly during irradiation.

ジャーナルInternational Journal of Advanced Manufacturing Technology
出版ステータスPublished - 2019 8月 1

ASJC Scopus subject areas

  • 制御およびシステム工学
  • ソフトウェア
  • 機械工学
  • コンピュータ サイエンスの応用
  • 産業および生産工学


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