激光喷丸强化7075铝合金嗣蚀性研宄
Abstract
7075aluminumisusedinstructuralduetoits
alloyaerospacepartshighstrength，
widely
lowandtothecorrosionresistanceof7075
densityweldability．However，duepoor
good
areusedincoastalareasfor
aluminumthestructuralof7075aluminum
alloy，whenpartsalloy
ofintheenvironment．Asanew
aistosufferthecorrosionchlorideions
time，it
longeasy
corrosionresistanceof
surfacemodificationshotcanthe
technology，laserpeeningimprove
surfaceresearchonlasershot
materialstheirintegrity．However，thepeening
byimproving
enhancedcorrosionresistanceisstillinitsthisinfluenceoflasershot
infancy．Inpaper，the
and
onthesurfaceof7075aluminumwasfiniteelement
peeningintegrityalloyanalyzedby
methods．Combinedwithelectrochemicalinteractioneffectof
experimentalexperiments，the
of7075aluminumwasstudied．Themain
lasershotonthecorrosionresistancealloy
peening
contentsareaSfollows：
research
onthedislocationevolutionunderstrain
(1)Basedpolycrystaltheorylargeproposedby
ofaluminumlasershot
microstructmeevolutionmechanisms订engthenedby
Estrin，thealloy