首页|Influence of cutting speed on fretting wear properties of UVAM-processed NAB alloy
Influence of cutting speed on fretting wear properties of UVAM-processed NAB alloy
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NSTL
Elsevier
? 2021In this study, NiAl bronze (NAB) alloys are processed using an ultrasonic vibration-assisted milling (UVAM) surface engineering technique. The strengthening mechanisms at different cutting speeds are analysed through well-established models and experiments. The increase in cutting speed produced decrements of 29.5%, 26.6%, and 5.6% in the friction torques, accumulated dissipated energy, and worn surface area, respectively. The microhardness gradually increased by 11%, which helped improve the fretting wear performance. Grain refinement, precipitation, and dislocation strengthening were the main mechanisms. Grain refinement (?σHP) had the greatest contribution to performance, followed by precipitation (?σor) and dislocation (?σd). Nanotwin strengthening was observed at a cutting speed of 150 m/min. Martensite nanotwins may nucleate at the grain boundary and grow toward the grain interior.
Fretting wearNanotwinStrengthening mechanismUVAM
Chen X.、Zhai W.、Wang J.、Lu W.、Chang S.、Zeng W.、Sun L.、Dong S.、Zheng K.
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The State Key Laboratory of Digital Manufacturing Equipment and Technology School of Mechanical Science and Engineering Huazhong University of Science and Technology (HUST)
EPSRC Centre for Innovative Manufacturing in Advanced Metrology University of Huddersfield
School of Mechanical Engineering Nanjing University of Science and Technology
NSTL
Elsevier
