Review on Additive Manufacturing of Single-Crystal Nickel-based Superalloys

Chinese Journal of Mechanical Engineering: Additive Manufacturing Frontiers Pub Date : 2022-03-01 DOI:10.1016/j.cjmeam.2022.100019

Yang Li , Xiaoyu Liang , Yefeng Yu , Dongfang Wang , Feng Lin

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引用次数: 25

Abstract

The conventional fabrication process for single-crystal nickel-based superalloy materials is directional solidification, which is classified as casting. With the rapid development of additive manufacturing (AM) technologies, a novel process for fabricating single-crystal superalloys has become possible. This article reviews recent research on the AM of single-crystal nickel-based superalloys. Laser AM technologies, particularly directed energy deposition, are mainly used to repair single-crystal materials. Electron beam powder bed fusion is an innovative method for the direct fabrication of single-crystal materials. Accordingly, the mechanisms of single-crystal formation during AM are analyzed to elucidate the potential of this process route. Furthermore, this article discusses the challenges faced by AM for single-crystal fabrication, and provides perspectives on the trends of future developments.

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单晶镍基高温合金增材制造研究进展

单晶镍基高温合金材料的传统制备工艺是定向凝固，属于铸造。随着增材制造技术的快速发展，单晶高温合金的新工艺已成为可能。本文综述了近年来单晶镍基高温合金增材制造的研究进展。激光增材制造技术，特别是定向能沉积技术，主要用于修复单晶材料。电子束粉末床熔合是直接制备单晶材料的一种创新方法。因此，分析了AM过程中单晶形成的机理，以阐明该工艺路线的潜力。此外，本文还讨论了增材制造在单晶制造中面临的挑战，并对未来的发展趋势进行了展望。

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Chinese Journal of Mechanical Engineering: Additive Manufacturing Frontiers

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