Open AccessHardness characteristics of as-cast Ni-Ru-Zr alloys
Author(s) -
L. Chipise,
N.R. Batane,
P.K. Jain,
S. H. Coetzee,
B. O. Odera,
William E. Goosen,
L.A. Cornish
Publication year - 2021
Publication title -
journal of mining and metallurgy. section b, metallurgy/journal of mining and metallurgy. section b, metallurgy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.42
H-Index - 20
eISSN - 2217-7175
pISSN - 1450-5339
DOI - 10.2298/jmmb200307022c
Subject(s) - materials science , alloy , vickers hardness test , brittleness , metallurgy , phase (matter) , toughness , indentation hardness , rockwell scale , composite material , microstructure , chemistry , organic chemistry
The Vickers hardness of 21 as-cast Ni-Ru-Zr alloys of different compositions were studied, and nanohardness indentations were done on the individual phases. The results were used to explain the brittleness by assessing the proportions of the phases, and their morphologies. The compound hardness varied between 704 - 1289 HV, with ~ZrRu2 being the hardest phase, and ~Zr2Ni7 being the least hard phase. The sample hardness was 300 - 1015 HV. Most of the samples were brittle, although there were regions of toughness around Ni36:Ru13:Zr51 and Ni20:Ru5:Zr75 (at.%). No alloy was identified to have potential good mechanical properties.