Parameter optimization for electron beam melting of IN718 based on melt pool characterization

Xiao Ding, Yuichiro Koizumi, Akihiko Chiba

研究成果: Conference contribution

1 被引用数 (Scopus)


Single bead experiments were conducted to clarify the relationship between process parameters and melt pool geometry based on melt pool characterization, aiming to obtain a better understanding of Electron Beam Melting (EBM) additive manufacturing. INCONEL® 1 718 polycrystalline plate and gas atomization powders were used to generate melt pool geometries by various beam power and scan speed combinations. The surface morphology and cross section microstructures were analyzed. The surface morphology indicates that input energy play an important role in single beads continuity. The microstructure of fully columnar grains is verified by cross-section profile of single beads. Furthermore, the melt pool widths and depth increase almost linearly with beam power on the basis of the cross-sectional geometrical profiles. A reciprocal relationship exists between width/depth ratio and line energy. Finally, process condition has profound effect on crystal growth and grain structure. Grains grow along different direction in relatively high line energy cases. However, grains grow almost along the same direction namely grow vertically in relatively low line energy cases.

ホスト出版物のタイトルSUPERALLOYS 2016 - Proceedings of the 13th International Symposium on Superalloys
編集者Mark Hardy, Eric Huron, Uwe Glatzel, Brian Griffin, Beth Lewis, Cathie Rae, Venkat Seetharaman, Sammy Tin
出版社Minerals, Metals and Materials Society
出版ステータスPublished - 2016
イベント13th International Symposium on Superalloys, SUPERALLOYS 2016 - Seven Springs, United States
継続期間: 2016 9 112016 9 15


名前Proceedings of the International Symposium on Superalloys


Other13th International Symposium on Superalloys, SUPERALLOYS 2016
国/地域United States
CitySeven Springs

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学


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