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Open AccessArticle

Impact-Sliding Tribology Behavior of TC17 Alloy Treated by Laser Shock Peening

1
Tribology Research Institute, Key Lab of Advanced Technologies of Materials, Southwest Jiaotong University, Chengdu 610031, China
2
Science and Technology on Plasma Dynamics Laboratory, Air Force Engineering University, Xi’an 710038, China
*
Author to whom correspondence should be addressed.
Materials 2018, 11(7), 1229; https://doi.org/10.3390/ma11071229
Received: 7 June 2018 / Revised: 6 July 2018 / Accepted: 9 July 2018 / Published: 17 July 2018
(This article belongs to the Special Issue Laser Materials Processing)
Outer particle collision with certain dynamic objects is not a pure impact wear behavior; it is typically accompanied by sliding wear phenomena. This study is aimed at investigating the impact-sliding wear performance of three different TC17 titanium alloys. One was untreated, and the other two were subjected to laser shock peening (LSP) by 5 and 7 J pulse energy, respectively. The wear test was performed on a novel impact-sliding wear testing rig, which can realize multiple impact-sliding motions by changing motion parameters in the x and z directions. Present results showed that wear resistance of both treated samples improved compared with the untreated alloy. Given the increase in wear cycles, increment in wear rate of the untreated sample was constantly higher than those of the treated samples. All results can be attributed to the increase in surface hardness of the material and residual compressive stress, which was also introduced after LSP. View Full-Text
Keywords: Impact-sliding wear; titanium alloy; laser shock peening; wear rate Impact-sliding wear; titanium alloy; laser shock peening; wear rate
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MDPI and ACS Style

Yin, M.; Wang, W.; He, W.; Cai, Z. Impact-Sliding Tribology Behavior of TC17 Alloy Treated by Laser Shock Peening. Materials 2018, 11, 1229.

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