Cr3C2 doped W0.6Al0.4C0.8–Co hard alloys prepared by hot-pressing. (January 2015)

• Record Type: Journal Article
• Authors: Zhao, Zhenye; Liu, Jianwei; Tang, Huaguo; Ma, Xianfeng; Zhao, Wei
• Is Part Of: International journal of refractory metals & hard materials. Volume 48(2015:Jan.)
• Page Start: 333
• Page End: 337
• Publication Date: 2015-01
• Subjects: W0.6Al0.4C0.8–Co -- Cr3C2 -- Hot-pressing -- Microstructure -- 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.2014.10.004
• Languages: English
• ISSNs: 0263-4368

Abstract

Abstract: W0.6 Al0.4 C0.8 8 wt.% Co hard alloys doped with 0.3, 0.6 and 0.9 wt.% Cr3 C2 were prepared by hot-pressing. The effect of Cr3 C2 content and sintering temperature on the relative density, microstructure and mechanical properties of the hard alloys was investigated. Based on the results, both the Cr3 C2 content and sintering temperature had great influences on the carbide grain size. The hardness of the samples added by 0.6 wt.% Cr3 C2 achieved the maximum value of 1987 kg/mm 2 when it was sintered at 1300 °C. The transverse rupture strength of the samples achieved the maximum value of 1929 MPa with 0.3 wt.% Cr3 C2 sintered at 1270 °C. Highlights: W0.6 Al0.4 C0.8 -8 wt.% Co with Cr3 C2 were prepared by hot-pressing. Cr3 C2 and sintering temperatures had influences on the W0.6 Al0.4 C0.8 grain size. The mechanical properties of W0.6 Al0.4 C0.8 -8 wt% Co were improved by Cr3 C2 .