Influence of cutting speed on fretting wear properties of UVAM-processed NAB alloy

Xin Chen, Wenzheng Zhai, Wenhan Zeng, Lianjun Sun, Song Dong, Kan Zheng, Jun Wang, Wenlong Lu, Suping Chang

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

In 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.

Original languageEnglish
Article number111711
Number of pages11
JournalMaterials Characterization
Volume185
Early online date5 Jan 2022
DOIs
Publication statusPublished - 1 Mar 2022

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