Txhawm rau hais txog cov teeb meem no, cov kws tshawb nrhiav tau sim ntau hom kev kho mob ntawm cov txheej txheem. Ntawm lawv, laser poob siab peening (lsp) tau nyiam ntau ntau vim tias nws zoo nkauj ncaj ncees. Coob tus ntawm cov kev tshawb fawb tau qhia tias txawm tias laser shopping cov txiaj ntsig tau zoo tshaj plaws hauv kev ua kom zoo nkauj thiab muaj zog ntxiv dag zog tseem xav tau hauv - qhov kev tshawb nrhiav tob.
Hauv txoj haujlwm no, cov kws sau ntawv sau cov khoom siv gradient cov khoom siv, teeb meem kev sib tw ntawm kev siv cov qauv me me thiab kev sib txhuam ntawm cov txheej txheem tsom xam.
Cov kev tshawb fawb tau qhia tau tias kev nplawm zoo tshaj plaws ntawm cov nyhuv titanium, Resided kev ntxhov siab, Resided ntawm Gradient Nanocrystalline - Amorphot Sub - qauv. Cov xwm txheej no zoo rau kev tshem tawm ntawm cov khoom sib luag thiab tuaj yeem hloov kho kom haum rau cov roj hmab loj hauv qab.
Tshwj xeeb, LSP pab TC6 Alloy kom muaj cov ntoo zoo - cov peev xwm tiv taus, thiab cov nqi hnav los ntawm 51.9% ncaj qha. Thaum lub sijhawm kev sib txhuam, cov gradient nanocrystals txhawb kev tsim ntawm nanocrystalline - amorpholous qauv, thiab kev ua haujlwm - hardened txheej txuas ntxiv txhim kho kev ua haujlwm fretting.
Tom qab kev kho lsp, tus ntoo khaub lig - ntu morphology ntawm TC6 alloy qhia minimal yas deformation thiab tsis muaj tseeb. Ib txheej tawv tawv txog 260μm tob thiab ib qho residual compressive kev nyuaj siab txheej txog 1780μm sib sib zog nqus yog tsim nyob rau saum npoo. Piv nrog rau cov qauv tsis kho, qhov siab tshaj plaws vickers tawv tawv ntawm LSP - kho cov qauv nce raws li 12,8%, thiab qhov siab tshaj plaws ntawm compressive kev ntxhov siab ncav cuag 672.47MPA.
LSP ntxias qhov kev tsim ntawm kev gradient micrient micrenttructure, xws li ib tug nplej ntawm qhov tob uas muaj kev cuam tshuam loj ntawm qhov tob txog ntawm 50μm. Cov nplej ua kom zoo ntawm - Theem thiab - theem yog tshwm sim los ntawm kev tshem tawm txav, xws li kev rho tawm ob npaug, ensanglement, ntxig, rov qab los thiab rhuav tshem.
Tsis tas li ntawd, LSP me ntsis txo cov kev sib txhuam coefficient ntawm cov qauv. Kev tsom xam ntawm kev sib txhuam lub zog - kev tshem tawm - kev thauj khoom, dissumated lub zog lossis tag nrho cov hluav taws xob pom tias qhov loj me ntawm spalling pits thiab coj khib nyiab. Kev me me hnav cov khib nyiab yog pab tau rau kev sib sau cov txheej txheej txheem tuab, uas tuaj yeem tiv thaiv cov matrix zoo.
Piv nrog rau cov qauv tsis kho, lub spalling lub qhov tob ntawm LSP - Kho tus nqi txo qis los ntawm 4.44M, hnav cov nqi txo qis li 51.9%.
Hauv cov ntsiab lus, laser kev poob siab peening tsim cov qauv zoo nkauj nanoys los ntawm titoos alloys, thiab ua cov tswv yim tshiab rau kev txhim kho AROER ARERO - COLINES thiab lwm thaj teb.