Additive manufacturing of WC reinforced maraging steel 300 composites by cold spraying and selective laser melting

SURFACE & COATINGS TECHNOLOGY

卷:371

Article; Proceedings Paper

Yan, Xingchen^1,2  Huang, Chunjie¹  Chen, Chaoyue¹  Bolot, Rodolphe¹  Dembinski, Lucas¹  Huang, Renzhong²  Ma, Wenyou²  Liao, Hanlin¹  Liu, Min² 

[1] Univ Bourgogne Franche Comte, UTBM, CNRS, LERMPS,ICB,UMR 6303, F-90010 Belfort, France

[2] Guangdong Inst New Mat, Key Lab Guangdong Modern Surface Engn Technol, Natl Engn Lab Modern Mat Surface Engn Technol, Guangzhou 510651, Guangdong, Peoples R China

关键词: Cold spraying;    Selective laser melting;    WC;    Maraging steel 300;    Microstructure;    Tribological behavior;   

DOI  :  10.1016/j.surfcoat.2018.03.072

来源: Elsevier

【 摘 要 】

Till now, additive manufacturing (AM) technologies based on different principles have been widely applied to produce metal matrix composites (MMCs). In this study, AM technologies of cold spraying additive manufacturing (CSAM) and selective laser melting (SLM) were used to manufacture maraging steel 300 (MS300) composite reinforced by WC particles. The results show that the SLM composite possesses a relatively higher densification rate and a lower porosity than that of the CSAM composite. Dry sliding wear test and micro hardness measurements were performed to characterize the mechanical properties. The CSAM composite possesses a slightly higher microhardness value than that of the SLM composite. However, the SLM composite shows a significantly lower wear rate than that of the CSAM composite, presenting a stable evolution of the friction coefficient and a worn morphology without obvious scratches. However, these differences in the mechanical properties can be contributed to the distinct evolution features of the WC reinforcement particle during these two AM processes. Through understanding the composite formation mechanisms and the WC evolution, it is possible to provide a guidance for application of the different AM technologies for preparation of MMCs.

【 授权许可】

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