High-density WC-45Cr-18Ni cemented hard metal fabricated with binder jetting additive manufacturing

被引:5
作者
Xu, Zhengkai [1 ]
Meenashisundaram, Ganesh Kumar [1 ]
Ng, Fern Lan [2 ]
机构
[1] Singapore Inst Mfg & Technol, Mfg Proc Div, Addit Mfg Grp, 73 Nanyang Dr, Singapore 637662, Singapore
[2] Singapore Inst Mfg & Technol, Mfg Proc Div, Reliabil & Characterisat Unit, Singapore, Singapore
关键词
Additive manufacturing; binder jetting; Tungsten carbide; cemented hard metal; mould; HIGH-TEMPERATURE OXIDATION; WEAR BEHAVIOR; SPRAYED WC-(W; CR)(2)C-NI; WC; MICROSTRUCTURE; NI; COATINGS; POWDER; RESISTANCE; EROSION;
D O I
10.1080/17452759.2021.1997006
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Additive manufacturing techniques provide alternative methods to the conventional powder metallurgy for the fabrication of difficult-to-be-machined hard metals. Binder Jetting is particularly suitable for the fabrication of crack-free hard metals as compared to other energy-based additive manufacturing techniques since there is no direct high energy heat input during the 3D printing process. To explore the fabrication process of hard metals and their potential applications, high-density crack-free WC-45Cr-18Ni parts were fabricated using Binder Jetting and sintering in this study. The sintering temperature of 1350 degrees C was found to contribute to the best combination of properties with 98.63% density, >1200 HV 0.3 hardness, compression strength >2200 MPa and compressive elastic modulus of 142 GPa. These parts also possess good oxidation resistance, corrosion resistance and dimensional stability. The Binder Jetting fabricated WC-45Cr-18Ni part shows the potential to be applied as mould material working at high temperatures and where corrosion, oxidation and wear resistance are required.
引用
收藏
页码:92 / 104
页数:13
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