Additive manufacturing of Sc microalloyed Rene 104 superalloy: Powder properties and cracking elimination

被引：15

作者：

Wei, Bing ^{[1
]}

Cao, Bin ^{[1
]}

Liu, Zuming ^{[1
]}

Zhou, Huan ^{[1
]}

Nong, Bizhong ^{[1
]}

Zhang, Yazhou ^{[1
]}

机构：

[1] Cent South Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China

来源：

ADVANCED POWDER TECHNOLOGY | 2022年 / 33卷 / 02期

关键词：

Selective laser melting; Rene; 104; superalloy; Sc microalloying; Powder property; Cracking elimination; MECHANICAL-PROPERTIES; HOT-CRACKING; MICROSTRUCTURE; EVOLUTION; POROSITY; ALLOYS; ZR; PROCESSABILITY; COMPONENTS; BEHAVIOR;

D O I：

10.1016/j.apt.2022.103430

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

ABSTR A C T Powder properties play a vital role in the formability of additive manufacturing (AM) based on powder bed. In this study, the effects of Sc microalloying on powder properties and cracking behavior of Rene 104 superalloy prepared by selective laser melting (SLM) were systematically investigated. The powder properties of Rene 104 superalloy microalloyed by Sc are significantly improved and the enrichment of Mo, W and Zr elements in the interdendritic of Rene 104-Sc powder is ameliorated. Sc microalloying con-tributes to the 46.8% decrease in grain size, 13.9% improvement in nanohardness and the elimination of cracks. The cracking elimination is basically attributed to the refinement of grains and the significant reduction of impurities. This work is expected to provide a new idea for preparation of high -performance nickel-based superalloy and parts with crack-free by AM. (c) 2022 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.

引用

页数：10

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