南京航空航天大学学报2025，Vol.57Issue(3)：517-526,10.DOI:10.16356/j.1005-2615.2025.03.013
激光冲击强化与热处理对电弧增材制造镍铝青铜性能影响
Effect of Laser Shock Peening and Heat Treatment on Properties of WAAM NAB
摘要
Abstract
This study explores the microstructural evolution and mechanical property enhancement of wire arc additive manufacturing(WAAM)nickel-aluminum bronze(NAB)by combining laser shock peening(LSP)and annealing heat treatments.The influence of various processing conditions on the material's microstructure and surface mechanical properties is investigated.The findings reveal that LSP refines the surface grains,leading to a notable increase in microhardness from 182 HV to 223.5 HV and the formation of a compressive residual stress layer reaching up to 572 MPa.Subsequent heat treatment optimizes the phase structure through static recrystallization,aiding grain boundary reconstruction by utilizing the dislocation energy introduced by LSP.This dual treatment approach maintains near-surface hardening effects while adjusting overall surface hardness to 202 HV and effectively alleviating residual stress.The study aims to offer insights into surface strengthening strategies for WAAM-produced NAB and broaden the potential application of LSP and heat treatment in additively manufactured metallic materials.关键词
激光冲击强化/电弧增材制造/镍铝青铜/热处理/微观组织/力学性能Key words
laser shock peening(LSP)/wire arc additive manufacturing(WAAM)/nickel-aluminum bronze(NAB)/heat treatment/microstructure/mechanical property分类
矿业与冶金引用本文复制引用
刘铄涵,戴宁,程筱胜,KULADEEP Rajamudili..激光冲击强化与热处理对电弧增材制造镍铝青铜性能影响[J].南京航空航天大学学报,2025,57(3):517-526,10.基金项目
国家重点研发计划(2023YFB4603901). （2023YFB4603901）
