Preprint Article Version 1 This version is not peer-reviewed

Microstructure and Tribological Properties of Mo-40Ni-13Si Multiphase Intermetallic Alloy

Version 1 : Received: 2 December 2016 / Approved: 2 December 2016 / Online: 2 December 2016 (11:04:19 CET)

A peer-reviewed article of this Preprint also exists.

Song, C.; Wang, S.; Gui, Y.; Cheng, Z.; Ni, G. Microstructure and Tribological Properties of Mo–40Ni–13Si Multiphase Intermetallic Alloy. Materials 2016, 9, 986. Song, C.; Wang, S.; Gui, Y.; Cheng, Z.; Ni, G. Microstructure and Tribological Properties of Mo–40Ni–13Si Multiphase Intermetallic Alloy. Materials 2016, 9, 986.

Journal reference: Materials 2016, 9, 986
DOI: 10.3390/ma9120986

Abstract

Intermetallic compounds are increasingly being expected to utilize in tribological environments, but to date the works are hindered by insufficient ductility at low and medium temperature. This paper presents a novel multiphase intermetallic alloy with the chemical composition of Mo-40Ni-13Si (at.%). Microstructure characterization reveals that a certain amount of ductile Mo phases formed during the solidification process of ternary Mo-Ni-Si alloy melt, which is undoubtedly beneficial to the ductility improvement of intermetallic alloy. Tribological properties of the designed alloy, including wear resistance, friction coefficient and metallic tribological compatibility, were evaluated under dry sliding wear test conditions at room temperature. Results suggested that the multiphase alloy possesses an excellent property for room-temperature wear applications, which is attributed to the unique microstructural features and thereby good combination in hardness and ductility. The corresponding wear mechanism is also reported by observing the worn surface, subsurface and wear debris of alloy, which to be found is soft abrasive wear.

Subject Areas

intermetallic; refractory metal; tribological property; toughening

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