Influence of Ru on the hardness and fracture toughness of WC-VC-Co alloys. (December 2018)

• Record Type: Journal Article
• Authors: Chipise, L.; Jain, P.K.; Cornish, L.A.
• Is Part Of: International journal of refractory metals & hard materials. Volume 77(2018)
• Page Start: 54
• Page End: 60
• Publication Date: 2018-12
• Subjects: 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.2018.07.008
• Languages: English
• ISSNs: 0263-4368

Abstract

Abstract: The effects of Ru additions on the hardness and fracture toughness of WC-VC-Co alloys were investigated on the following compositions: 80WC-10VC-(10- x )Co- x Ru (0 ≤ x ≤ 3) (wt%), (89.6- x )WC-10Co-0.4VC- x Ru (0 ≤ x ≤ 2) (wt%), (89.2- x )WC-10Co-0.8VC- x Ru (0 ≤ x ≤ 2) (wt%) and 89.6WC-(10- x )Co-0.4VC- x Ru (0 ≤ x ≤ 3) (wt%). Hardness increased with increased Ru additions in all alloy series due to a combination of decreased grain size and increased solid solution strengthening. Ruthenium additions generally compromised fracture toughness, although there was improvement for some compositions. Highlights: The influence of Ru additions on the hardness and fracture toughness of WC-VC-Co alloys was studied. Ru increased hardnesses in all alloy series. There was a general decrease in fracture toughness with Ru additions. In some cases Ru additions improved fracture toughness of WC-VC-Co alloys.