Raws li tsab ntawv ceeb toom tsis ntev los no los ntawm Physicist Organization Network, engineers ntawm University of California, Los Angeles, tau siv titanium carbide nanoparticles los ua cov khoom tshwj xeeb aluminium alloy AA7075, uas tsis tuaj yeem welded los ua welded. Cov khoom tsim tau yuav tsum tau siv rau hauv kev tsim tsheb thiab lwm yam kev lag luam kom nws cov khoom sib zog, siv zog ntau dua, thiab ruaj khov.
Lub zog zoo tshaj plaws ntawm cov khoom siv txhuas ntau dua yog 7075 alloy. Nws yuav luag zoo li hlau, tab sis hnyav ib feem peb ntawm cov hlau. Nws yog feem ntau siv hauv CNC machined qhov chaw, dav hlau fuselage thiab tis, smartphone plhaub thiab pob zeb nce toj carabiner, thiab lwm yam. Txawm li cas los xij, cov alloys nyuaj rau vuam, thiab tshwj xeeb, tsis tuaj yeem welded txoj kev siv hauv tsheb tsim, yog li ua rau lawv siv tsis tau. . Qhov no yog vim hais tias thaum lub alloy yog rhuab nyob rau hauv lub vuam txheej txheem, nws cov qauv molecular ua rau cov ntsiab lus ntawm txhuas, zinc, magnesium thiab tooj liab kom ntws tsis sib xws, ua rau cov kab nrib pleb hauv cov khoom welded.

Tam sim no, UCLA engineers txhaj titanium carbide nanoparticles rau hauv cov hlau ntawm AA7075, tso cai rau cov nanoparticles los ua ib qho muab tub lim ntawm cov khoom sib txuas. Siv txoj kev tshiab no, cov khoom siv welded sib koom ua ke muaj lub zog tensile txog 392 MPa. Nyob rau hauv sib piv, AA6061 aluminium alloy welded pob qij txha, uas yog dav siv nyob rau hauv dav hlau thiab tsheb qhov chaw, muaj ib tug tensile zog ntawm 186 MPa.

Raws li kev tshawb fawb, kev kho cua sov tom qab vuam tuaj yeem ua kom lub zog tensile ntawm AA7075 sib koom ua ke rau 551 MPa, uas yog piv rau cov hlau. Cov kev tshawb fawb tshiab kuj tau pom tias cov khoom siv lim dej tau ntim nrogTiC titanium carbide nanoparticleskuj tseem tuaj yeem yooj yim koom nrog rau lwm cov hlau thiab hlau alloys uas nyuaj rau vuam.

Tus neeg tseem ceeb ntawm txoj kev tshawb fawb tau hais tias: "Lub thev naus laus zis tshiab yuav tsum ua kom lub zog muaj zog aluminium alloy no dav siv hauv cov khoom uas tuaj yeem tsim los ntawm cov nplai loj, xws li tsheb lossis tsheb kauj vab. Cov tuam txhab tuaj yeem siv tib cov txheej txheem thiab cov khoom siv uas lawv twb muaj lawm. Lub super-muaj zog aluminium alloy tau muab tso rau hauv nws cov txheej txheem tsim ua kom nws sib zog thiab siv zog ntau dua thaum tseem tuav nws lub zog. " Cov kws tshawb fawb tau ua haujlwm nrog lub chaw tsim khoom tsheb kauj vab los siv cov hlau no ntawm lub cev tsheb kauj vab.