Preparation of nanocrystalline gradient cemented carbide by adding gradient former of V(C, N). (November 2021)

• Record Type: Journal Article
• Authors: Wang, Kai; Wang, Renru; Zhou, Xiangkui; Li, Guojian; Pei, Jiaao; Wang, Qiang
• Is Part Of: International journal of refractory metals & hard materials. Volume 100(2021)
• Publication Date: 2021-11
• Subjects: Nanocrystalline -- Gradient cemented carbide -- Gradient former -- Mechanical properties; Heat resistant alloys -- Periodicals; Refractory materials -- Periodicals; Metallography -- Periodicals; Alliages réfractaires -- Périodiques; Matériaux réfractaires -- Périodiques; Métallographie -- Périodiques; Heat resistant alloys; Metallography; Refractory materials; Periodicals; Electronic journals; 669.73
• DOI: 10.1016/j.ijrmhm.2021.105630
• Languages: English
• ISSNs: 0263-4368

Abstract

Abstract: Nanometer WC and Co powders were used as raw materials, gradient former of V(C, N) and traditional gradient former of Ti(C, N) were added respectively to prepare gradient cemented carbide by a two-step sintering process. The results showed that nanocrystalline gradient cemented carbide was prepared by adding gradient former of V(C, N), and ultrafine gradient cemented carbide was prepared by adding gradient former of Ti(C, N). Growth of WC grains were inhibited and the gradient layer was thickened by adding the gradient former of V(C, N). The mechanical properties of the alloy with V(C, N) were better than those of alloy with Ti(C, N). Highlights: Nanocrystalline gradient cemented carbide could be prepared by adding gradient former of V(C, N). Growth of WC grains were inhibited and the gradient layer was thickened by adding the gradient former of V(C, N). The mechanical properties of Co10V6-alloy are superior to those of Co10Ti6-alloy.