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

被引：0

作者：

Wu, Zuji ^{[1
]}

Fan, Jiafeng ^{[1
]}

Li, Jingmao ^{[1
]}

Zhu, Dezhi ^{[1
]}

Qu, Shengguan ^{[1
]}

Li, Xiaoqiang ^{[1
]}

机构：

[1] South China Univ Technol, Natl Engn Res Ctr Near Net Shape Forming Technol M, Guangzhou 510640, Peoples R China

来源：

CAILIAO GONGCHENG-JOURNAL OF MATERIALS ENGINEERING | 2022年 / 50卷 / 12期

关键词：

Ti-doped; WC-Ni3Al; in-situ(Ti; W)C; microstructure; mechanical property; COMPOSITES;

D O I：

10.11868/j.issn.1001-4381.2021.001154

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 Al(2)O(3)reactively 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 & PLUSMN;0.18) GPa and fracture toughness of (13.14 & PLUSMN;0.24) MPa & BULL;m(1/2).

引用

页码：103 / 111

页数：9

共 20 条

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