High temperature wear performance of Ti–6.5Al–3.5Mo–1.5Zr–0.3Si alloy subjected to laser shock peening

Xudong Ren, Zhaopeng Tong, Wangfan Zhou, Lan Chen, Yunpeng Ren, Fengze Dai, Yunxia Ye, Samuel Adu-gyamfi, Jinde Yang, Lin Li

    Research output: Contribution to journalArticlepeer-review

    Abstract

    This paper investigates the influence of laser shock peening (LSP) parameters on surface integrities and high temperature wear performances of Ti–6.5Al–3.5Mo–1.5Zr–0.3Si alloy. Surface integrities include surface roughness, residual stress and micro-hardness are measured. High temperature wear performance of TC11 alloy with and without LSP are investigated. The results indicate that multiple LSP impacts can improve surface micro-hardness and induce compressive residual stress in the surface layer. Moreover, the friction coefficient and wear rate of TC11 alloy significantly decrease after LSP with optimised parameters. The improved wear performance is ascribed to the low surface roughness, higher surface micro-hardness and compressive residual stress induced by multiple LSP impacts in the surface layer.
    Original languageEnglish
    Pages (from-to)2294-2304
    JournalMaterials Science and Technology
    Volume34
    Issue number18
    Early online date14 Oct 2018
    DOIs
    Publication statusPublished - 12 Dec 2018

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