Effect of Ti5Si3 on the wear properties of Ti–3Si-1.5Fe–1Mo titanium alloy with ultrahigh hardness

• DOI: 10.1016/j.jmrt.2022.07.042
• Publication Date: 2022-07-15T14:38:57Z
• Authors: Jingjiu Yuan; Qunbo Fan; Lin Yang; Shun Xu; Linzhu Wang; Hongmei Zhang; Xingwang Cheng; Naitao Geng; Kai Chen; Qianyun Yan
• Keywords: Titanium alloy

In this work, Ti–3Si-1.5Fe–1Mo titanium alloy reinforced with in-situ synthesized Ti 5 Si 3 was prepared, and ultrahigh hardness (55.6 HRC) achieved by solution aging treatment. The effects of on the friction wear behavior were investigated. Results show that rate after hot treatment increases from 3.51 × 10 −4 mm N −1 m to 3.93 , yet exhibits poor resistance. A series tracks characterizations thermodynamical calculations performed elucidate its mechanism: during reciprocating sliding, reduction content leads increase pair force matrix, TiO 2 SiO debris are generated then fall off, both oxidative adhesive aggravated, which seriously impair resistance alloy.