Tribological performance effects and anti-wear mechanism of microscale laser shock peening without coating on (TiB + La2O3)/IMI834 Ti-matrix composite under different impact numbers

Xiangfan Nie; Peiwen Xu; Li Yan; Di Zhang; Yuhan Li; Yuanfei Han; Congkai Shi; Rubin Cui; Fayong Zhong

doi:10.1016/j.matlet.2026.141200

Tribological performance effects and anti-wear mechanism of microscale laser shock peening without coating on (TiB + La₂O₃)/IMI834 Ti-matrix composite under different impact numbers

Xiangfan Nie
, Peiwen Xu
, Li Yan
, Di Zhang
, Yuhan Li
, Yuanfei Han
, Congkai Shi
, Rubin Cui
, Fayong Zhong

School of Mechanical Engineering

Air Force Engineering University Xian
Chongqing Jiaotong University
Shanghai Jiao Tong University
Xi'an Jiaotong University

Research output: Contribution to journal › Article › peer-review

Abstract

Microscale laser shock peening without coating (μLSPwC) was applied to (TiB + La₂O₃)/IMI834 Ti-matrix composite. The effects of μLSPwC on surface integrity and wear behavior, particularly under varying impact numbers, were systematically investigated. The results identified 1 impact as the optimal condition, where the average coefficient of friction (COF) decreased from 0.40 to 0.348, and the wear rate decreased from 0.81 × 10⁻⁵ to 0.62 × 10⁻⁵ mm³/N·mm. The wear mechanism shifted from severe abrasive-adhesive wear to predominantly mild abrasive wear. This improvement was associated with μLSPwC-induced surface integrity modification, including surface morphology, microstructure, residual stress, and microhardness.

Original language	English
Article number	141200
Journal	Materials Letters
Volume	422
DOIs	https://doi.org/10.1016/j.matlet.2026.141200
State	Published - 1 Nov 2026

Keywords

(TiB + LaO)/IMI834 Ti-matrix composite
Anti-wear mechanism
Impact number
Microscale laser shock peening without coationg
Surface integrity
Tribological performance

Access to Document

10.1016/j.matlet.2026.141200

Cite this

@article{a75fff57d8754caa8d68cbdbf8bc41f7,

title = "Tribological performance effects and anti-wear mechanism of microscale laser shock peening without coating on (TiB + La2O3)/IMI834 Ti-matrix composite under different impact numbers",

abstract = "Microscale laser shock peening without coating (μLSPwC) was applied to (TiB + La2O3)/IMI834 Ti-matrix composite. The effects of μLSPwC on surface integrity and wear behavior, particularly under varying impact numbers, were systematically investigated. The results identified 1 impact as the optimal condition, where the average coefficient of friction (COF) decreased from 0.40 to 0.348, and the wear rate decreased from 0.81 × 10−5 to 0.62 × 10−5 mm3/N·mm. The wear mechanism shifted from severe abrasive-adhesive wear to predominantly mild abrasive wear. This improvement was associated with μLSPwC-induced surface integrity modification, including surface morphology, microstructure, residual stress, and microhardness.",

keywords = "(TiB + LaO)/IMI834 Ti-matrix composite, Anti-wear mechanism, Impact number, Microscale laser shock peening without coationg, Surface integrity, Tribological performance",

author = "Xiangfan Nie and Peiwen Xu and Li Yan and Di Zhang and Yuhan Li and Yuanfei Han and Congkai Shi and Rubin Cui and Fayong Zhong",

note = "Publisher Copyright: {\textcopyright} 2026",

year = "2026",

month = nov,

day = "1",

doi = "10.1016/j.matlet.2026.141200",

language = "英语",

volume = "422",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Tribological performance effects and anti-wear mechanism of microscale laser shock peening without coating on (TiB + La2O3)/IMI834 Ti-matrix composite under different impact numbers

AU - Nie, Xiangfan

AU - Xu, Peiwen

AU - Yan, Li

AU - Zhang, Di

AU - Li, Yuhan

AU - Han, Yuanfei

AU - Shi, Congkai

AU - Cui, Rubin

AU - Zhong, Fayong

PY - 2026/11/1

Y1 - 2026/11/1

N2 - Microscale laser shock peening without coating (μLSPwC) was applied to (TiB + La2O3)/IMI834 Ti-matrix composite. The effects of μLSPwC on surface integrity and wear behavior, particularly under varying impact numbers, were systematically investigated. The results identified 1 impact as the optimal condition, where the average coefficient of friction (COF) decreased from 0.40 to 0.348, and the wear rate decreased from 0.81 × 10−5 to 0.62 × 10−5 mm3/N·mm. The wear mechanism shifted from severe abrasive-adhesive wear to predominantly mild abrasive wear. This improvement was associated with μLSPwC-induced surface integrity modification, including surface morphology, microstructure, residual stress, and microhardness.

AB - Microscale laser shock peening without coating (μLSPwC) was applied to (TiB + La2O3)/IMI834 Ti-matrix composite. The effects of μLSPwC on surface integrity and wear behavior, particularly under varying impact numbers, were systematically investigated. The results identified 1 impact as the optimal condition, where the average coefficient of friction (COF) decreased from 0.40 to 0.348, and the wear rate decreased from 0.81 × 10−5 to 0.62 × 10−5 mm3/N·mm. The wear mechanism shifted from severe abrasive-adhesive wear to predominantly mild abrasive wear. This improvement was associated with μLSPwC-induced surface integrity modification, including surface morphology, microstructure, residual stress, and microhardness.

KW - (TiB + LaO)/IMI834 Ti-matrix composite

KW - Anti-wear mechanism

KW - Impact number

KW - Microscale laser shock peening without coationg

KW - Surface integrity

KW - Tribological performance

UR - https://www.scopus.com/pages/publications/105043489856

U2 - 10.1016/j.matlet.2026.141200

DO - 10.1016/j.matlet.2026.141200

M3 - 文章

AN - SCOPUS:105043489856

SN - 0167-577X

VL - 422

JO - Materials Letters

JF - Materials Letters

M1 - 141200

ER -

Tribological performance effects and anti-wear mechanism of microscale laser shock peening without coating on (TiB + La₂O₃)/IMI834 Ti-matrix composite under different impact numbers

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this