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Einfluss von Titanzugabe auf Gefüge, mechanische und tribologische Eigenschaften gesinterter Ni 3 Si‐Legierungen
Author(s) -
Zhang X.,
Niu M.,
Wu C.,
Chen J.
Publication year - 2019
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/mawe.201700163
Subject(s) - materials science , tribology , alloy , microstructure , metallurgy , powder metallurgy , titanium , titanium alloy , abrasive , phase (matter) , chemistry , organic chemistry
Ni 3 Si alloy with different content of titanium was fabricated by powder metallurgy method. The microstructures, hardness and tribological properties of the alloys were investigation. The results showed that pure Ni 3 Si alloy was composed of β 1 ‐Ni 3 Si phase and γ‐Ni 31 Si 12 phase, and Ni 3 Ti phase formed with titanium addition. The hardness of the alloy decreased with the increasing titanium content. The friction coefficient of pure Ni 3 Si alloy increased with the increasing load, while the friction coefficient of the alloy with titanium addition decreased. The wear rates of the alloys were all increased with increasing load, and the alloy with 5 % titanium addition had the best wear resistance properties. The wear mechanisms of the alloys were abrasive wear at low load, and the wear mechanisms changed to oxidative wear at high load.