The effects of stored energy on wear resistance of friction stir processed pure Ti

Luyao Jiang; Weijiu Huang; Chenglong Liu; Yongyi Guo; Chenhui Chen; Junjun Wang; Weijie Yu

Results in Physics (Mar 2019)

The effects of stored energy on wear resistance of friction stir processed pure Ti

Luyao Jiang,
Weijiu Huang,
Chenglong Liu,
Yongyi Guo,
Chenhui Chen,
Junjun Wang,
Weijie Yu

Affiliations

Luyao Jiang: College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400054, China; Chongqing Key Laboratory of Mold Technology, Chongqing University of Technology, Chongqing 400054, China; College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China
Weijiu Huang: College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400054, China; Research Institute for New Materials Technology, Chongqing University of Arts and Sciences, Chongqing 402160, China; College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China; Corresponding author at: Research Institute for New Materials Technology, Chongqing University of Arts and Sciences, Chongqing 402160, China.
Chenglong Liu: College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400054, China; Chongqing Key Laboratory of Mold Technology, Chongqing University of Technology, Chongqing 400054, China
Yongyi Guo: College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400054, China; Chongqing Key Laboratory of Mold Technology, Chongqing University of Technology, Chongqing 400054, China
Chenhui Chen: College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400054, China; Chongqing Key Laboratory of Mold Technology, Chongqing University of Technology, Chongqing 400054, China
Junjun Wang: College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400054, China; Chongqing Key Laboratory of Mold Technology, Chongqing University of Technology, Chongqing 400054, China
Weijie Yu: College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400054, China; College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China

Journal volume & issue: Vol. 12
pp. 1276 – 1284

Abstract

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The friction stir processed pure Ti was annealed at 550 °C with various annealing times. Dry sliding wear tests on friction stir processed and as-annealed pure Ti were performed at room temperature. Friction coefficient and wear rate of the alloys were measured. The results showed that the friction stir processed pure Ti with high hardness revealed lower wear resistance than as-annealed samples. The stored energy of the samples before and after annealing treatment were calculated. The relationship between work hardening and wear resistance of pure Ti was discussed. The run-in period increased as the stored energy in the pure Ti decreased. The fine-grained pure Ti with 400 kJ/m3 low angle grain boundaries stored energy exhibited the lowest wear rate. The wear mechanism of fine-grained pure Ti changed from fatigue wear and abrasive wear to adhesive wear after annealing treatment. Keywords: Titanium alloy, Friction stir processing, Annealing, Stored energy, Wear resistance

Published in Results in Physics

ISSN: 2211-3797 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: http://www.journals.elsevier.com/results-in-physics/

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