Effect of substrate orientation on crystal growth in selective electron beam melting of nickel-based superalloy

•Single-crystal structure can be fabricated directly on the (001) substrate by SEBM.•Stable forming conditions are necessary for the formation of single crystal structure.•Metallurgical bonding interface is the key to epitaxial growth.•Stray grains were formed and grow competitively on the (011) and...

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Veröffentlicht in:	Materials letters 2021-12, Vol.305, p.130870, Article 130870
Hauptverfasser:	Guo, Xiyang, Zhou, Xin, Zhang, Peiyu, Duan, Yucong, Cheng, Xing, Wang, Xuede, Chang, Dongbo
Format:	Artikel
Sprache:	eng
Schlagworte:	Additive manufacturing Columnar structure Competitive growth Crystal growth Crystal structure Crystallography Electron beam melting Epitaxial growth Grain growth Heating Materials science Ni-based single-crystalsuperalloy Nickel base alloys Orientation effects Polycrystals Selective electron beam melting Single crystals Substrates Superalloys Temperature distribution
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