Effect of titanium addition on microstructure and mechanical properties of WC-Ni3Al cemented carbide

WU Zuji; FAN Jiafeng; LI Jingmao; ZHU Dezhi; QU Shengguan; LI Xiaoqiang

doi:10.11868/j.issn.1001-4381.2021.001154

Cailiao gongcheng (Dec 2022)

Effect of titanium addition on microstructure and mechanical properties of WC-Ni3Al cemented carbide

WU Zuji,
FAN Jiafeng,
LI Jingmao,
ZHU Dezhi,
QU Shengguan,
LI Xiaoqiang

Affiliations

WU Zuji: National Engineering Research Center of Near-net-shape Forming Technology for Metallic Materials, South China University of Technology, Guangzhou 510640, China
FAN Jiafeng: National Engineering Research Center of Near-net-shape Forming Technology for Metallic Materials, South China University of Technology, Guangzhou 510640, China
LI Jingmao: National Engineering Research Center of Near-net-shape Forming Technology for Metallic Materials, South China University of Technology, Guangzhou 510640, China
ZHU Dezhi: National Engineering Research Center of Near-net-shape Forming Technology for Metallic Materials, South China University of Technology, Guangzhou 510640, China
QU Shengguan: National Engineering Research Center of Near-net-shape Forming Technology for Metallic Materials, South China University of Technology, Guangzhou 510640, China
LI Xiaoqiang: National Engineering Research Center of Near-net-shape Forming Technology for Metallic Materials, South China University of Technology, Guangzhou 510640, China

DOI: https://doi.org/10.11868/j.issn.1001-4381.2021.001154
Journal volume & issue: Vol. 50, no. 12
pp. 103 – 111

Abstract

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Ti-doped WC-Ni3Al cemented carbide was prepared by spark plasma sintering for improving mechanical properties. The effect of different Ti contents on the microstructure and mechanical properties of WC-Ni3Al cemented carbide was investigated. The results show that due to Ti addition, the small amount of Al2O3reactively formed in WC-Ni3Al is smaller and more uniform than the sintered sample without adding Ti. The refinement of Al2O3 and the in-situ (Ti, W) C synergistically enhance the hardness of the WC-Ni3Al cemented carbide. Meanwhile, the fracture toughness is improved because the in-situ (Ti, W)C and WC have a better interface combination, facilitating the bridging and deflection formation of cracks. The WC-Ni3Al cemented carbide with 3% (mass fraction) Ti obtains the optimal mechanical properties, with hardness of (19.29±0.18) GPa and fracture toughness of (13.14±0.24) MPa·m1/2.

Published in Cailiao gongcheng

ISSN: 1001-4381 (Print)
Publisher: Journal of Materials Engineering
Country of publisher: China
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: http://jme.biam.ac.cn/CN/1001-4381/home.shtml

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