Hardness characteristics of as-cast Ni-Ru-Zr alloys-Reference-Cited by-同舟云学术

Hardness characteristics of as-cast Ni-Ru-Zr alloys

Published:2021 Issue:2 Volume:57 Page:261-270
ISSN:1450-5339
Container-title:Journal of Mining and Metallurgy, Section B: Metallurgy
language:en
Short-container-title:J min metall B Metall

Author:

Chipise L.¹,Batane N.R.²,Jain P.K.³,Coetzee S.H.⁴,Odera B.O.⁵,Goosen W.⁶,Cornish L.A.⁷

Affiliation:

1. University of the Witwatersrand, School of Chemical and Metallurgical Engineering and the DST-NRF Centre of Excellence in Strong Materials, Johannesburg, South Africa + African Materials Science and Engineering Network (AMSEN: A Carnegie-IAS RISE Network) + Manicaland State University of Applied Sciences, Mutare, Zimbabwe + University of Botswana, Mechanical Engineering Department, Gaborone, Botswana

2. African Materials Science and Engineering Network (AMSEN: A Carnegie-IAS RISE Network) + University of Botswana, Mechanical Engineering Department, Gaborone, Botswana

3. African Materials Science and Engineering Network (AMSEN: A Carnegie-IAS RISE Network) + University of Botswana, Physics Department, Gaborone, Botswana

4. African Materials Science and Engineering Network (AMSEN: A Carnegie-IAS RISE Network) + The Botswana Institute for Technology Research and Innovation, Gaborone, Botswana

5. African Materials Science and Engineering Network (AMSEN: A Carnegie-IAS RISE Network) + Technical University of Kenya, School of Mechanical and Process Engineering, Nairobi, Kenya

6. Nelson Mandela University, Centre for High Resolution Transmission Electron Microscopy, Port Elizabeth, South Africa

7. University of the Witwatersrand, School of Chemical and Metallurgical Engineering and the DST-NRF Centre of Excellence in Strong Materials, Johannesburg, South Africa + African Materials Science and Engineering Network (AMSEN: A Carnegie-IAS RISE Network)

Abstract

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.

Publisher

National Library of Serbia

Subject

Materials Chemistry,Metals and Alloys,Mechanics of Materials,Geotechnical Engineering and Engineering Geology