The effect of titanium addition on the microstructure, mechanical and tribological properties of Ni3Si alloys prepared by powder metallurgy method. Issue 12 (17th December 2019)

• Record Type: Journal Article
• Authors: Zhang, X.; Niu, M.; Wu, C.; Chen, J.
• Is Part Of: Materialwissenschaft und Werkstofftechnik. Volume 50:Issue 12(2019:Dec.)
• Page Start: 1537
• Page End: 1544
• Publication Date: 2019-12-17
• Subjects: Ni3Si alloys -- microstructures -- tribological properties -- wear mechanisms -- hardness; Ni3Si-Legierungen -- Gefüge -- tribologische Eigenschaften -- Verschleißmechanismus -- Härte; Materials -- Periodicals; Materials -- Testing -- Periodicals; 620.1
• DOI: 10.1002/mawe.201700163
• Languages: English
• ISSNs: 0933-5137

Abstract

Abstract: Ni3 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 Ni3 Si alloy was composed of β1 ‐Ni3 Si phase and γ‐Ni31 Si12 phase, and Ni3 Ti phase formed with titanium addition. The hardness of the alloy decreased with the increasing titanium content. The friction coefficient of pure Ni3 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.