Abstract:The Vickers hardnesses 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 hardnesses varied between 704 - 1289 HV, with ~ZrRu2 being the
hardest phase, and ~Zr2Ni7 being the least hard phase. The sample hardnesses
were 300 - 1015 HV. Most of the samples were brittle, although there… Show more
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