Effect of adding IN718 on crack inhibition, microstructure, and mechanical properties of selective laser melted IN738LC alloy

IF 4.6 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-02-17 DOI:10.1016/j.optlastec.2025.112600

Chunxue Wang , Guoqiang Huang , Zhenkui Liang , Xin Chen , Jianhui Wu , Tao Sun , Fanqiang Meng , Sergey Mironov , Jicheng Gao , Lin Zhao , Xiaomei Feng , Yifu Shen

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引用次数: 0

Abstract

Crack inhibition during additive manufacturing (AM) of superalloys with complex compositions is an important but challenging task. In this work, we explored the effectiveness of reducing the Al and Ti content by adding IN718 superalloy powders to realize crack suppression during selective laser melting (SLM) of IN738LC superalloy. The effect of IN718 superalloy powder addition on the crack formation, microstructure, and mechanical properties of the SLMed 738LC superalloy was investigated in detail. The results show that adding the IN718 superalloy powder can effectively inhibit the formation of cracks in the SLMed IN738LC superalloy while improving the mechanical properties. The SLMed IN718-25 % sample shows the best mechanical properties, with a tensile strength of 937 MPa and an elongation of 30.6 %. Also, its hardness distribution tends to be more uniform. The excellent mechanical properties are mainly attributed to the effective crack suppression by adding a certain percentage of IN718 to the IN738LC alloy. Our work provides a simple method to effectively inhibit crack formation during the AM process of nickel-based superalloys.

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添加 IN718 对选择性激光熔化 IN738LC 合金的裂纹抑制、微观结构和机械性能的影响

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来源期刊

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems