Journal
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
Volume 108, Issue 5-6, Pages 1653-1673Publisher
SPRINGER LONDON LTD
DOI: 10.1007/s00170-020-05389-5
Keywords
Additive manufacturing; WC-Co hardmetals; Selective laser melting; Binder jet additive manufacturing; Selective electron beam melting; Fused filament fabrication; Cermet
Funding
- National Natural Science Foundation of China [51605287]
- Natural Science Foundation of Shanghai [16ZR1417100]
- fund of StateKey Laboratory of Long-life High Temperature Materials [DTCC28EE190933]
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WC-Co hardmetals are widely used in wear-resistant parts, cutting tools, molds, and mining parts, owing to the combination of high hardness and high toughness. WC-Co hardmetal parts are usually produced by casting and powder metallurgy, which cannot manufacture parts with complex geometries and often require post-processing such as machining. Additive manufacturing (AM) technologies are able to fabricate parts with high geometric complexity and reduce post-processing. Therefore, additive manufacturing of WC-Co hardmetals has been widely studied in recent years. In this article, the current status of additive manufacturing of WC-Co hardmetals is reviewed. The advantages and disadvantages of different AM processes used for producing WC-Co parts, including selective laser melting (SLM), selective electron beam melting (SEBM), binder jet additive manufacturing (BJAM), 3D gel-printing (3DGP), and fused filament fabrication (FFF) are discussed. The studies on microstructures, defects, and mechanical properties of WC-Co parts manufactured by different AM processes are reviewed. Finally, the remaining challenges in additive manufacturing of WC-Co hardmetals are pointed out and suggestions on future research are discussed.
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