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Cov nyhuv ntawm Cu element ntawm cov khoom ntawm 8011 alloy tshuaj foil

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Cov nyhuv ntawm Cu element ntawm cov khoom ntawm 8011 alloy tshuaj foil

Hauv daim ntawv no, Cov nyhuv ntawm Cu keeb ntawm lub ci tsis kam ntawm 8011 alloy aluminium foil tau kawm los ntawm kev ntsuas tensile, kev tshuaj xyuas pinhole, metallographic xeem, thiab ci tsis kam. Cov txiaj ntsig tau pom tias tom qab kev sim ci ntawm 275 ℃ /75s, nyob rau hauv ib tug tej yam, lub siab kub stability ntawm 8011 alloy yog txhim kho nrog qhov nce ntawm kab Cu cov ntsiab lus hauv 8011 hlau alloy.
Cim npe: 8011 hlau alloy; Nrog lub ntsiab; ci tsis kam
1 kev sim
1.1 Cov khoom siv kuaj
Cov 8011 alloy casting thiab dov billets raug xaiv raws li cov ntaub ntawv xeem, thiab lub billet yog 7.4mm * 1140. Cov ntsiab lus Cu ntawm peb 8011 alloys (8011-1, 8011-2, 8011-3) txawv, thiab cov muaj pes tsawg leeg ntawm lwm yam tsis txawv heev.

1.2 Kev npaj kuaj
Cov txheej txheem aluminium foil ntau lawm yog: smelting – casting thiab dov – txias dov – nruab nrab annealing – txiav – ntawv yob – slitting – ntim.
Tsuas yog qhov sib txawv ntawm cov ntsiab lus Cu, lwm cov txheej txheem ntau lawm ntawm peb 8011 alloy aluminium foils yog tsim raws li cov txheej txheem tib yam. Cov ntawv ua tiav aluminium ntawv ci tau raug sim rau kev ua haujlwm thiab kev ua haujlwm ci ua haujlwm raws li. Ntxiv rau, cov qauv raug coj mus kuaj annealing ntawm 180 ℃, 200 ℃, 220 ℃, 240 ℃, 260 ℃ thiab 280 ℃ rau 3h.

Lub pinhole thiab dyne tus nqi xeem ntawm txhuas ntawv nyiaj yog kuaj raws li cov kev cai ntawm GB3198-2010. Peb cov qauv ua tiav tiav tau muab tso rau hauv tib lub qhov cub rau kev sim ci. Raws li kev siv tiag tiag ntawm cov neeg siv khoom, qhov ntsuas kub ntawm qhov kev ntsuas ci ci yog teem rau 275 ℃, thiab lub sijhawm ci yog 75s.
Tensile specimens tau ua raws li GB3198-2010 tus qauv, qhov ntsuas qhov ntev yog 100mm, thiab qhov ntev axis ntawm cov qauv yog parallel mus rau dov kev taw qhia. Tensile specimens raug sim ntawm KD II-1 hluav taws xob universal kuaj tshuab.

2 Cov qhabnias xeem thiab kev txheeb xyuas
Peb cov alloys muaj cov qauv zoo ib yam thiab tsis muaj cov qauv sab hauv xws li kev sib cais. Cov nplej loj ntawm peb cov alloys tsis txawv ntau, thiab qhov luaj li cas yog hais txog 150 ib m, uas ua tau raws li qhov yuav tsum tau ua ntawm cov txheej txheem txias dov thiab cov txheej txheem annealing ntawm aluminium foil substrates.

Txhawm rau kawm txog cov txiaj ntsig ntawm Cu cov ntsiab lus ntawm cov khoom thiab ci ua haujlwm ntawm aluminium ntawv ci, peb hom 8011 alloy aluminium foil cov khoom lag luam nrog cov ntsiab lus Cu sib txawv tau sim rau cov khoom siv kho tshuab thiab kev ntsuas ci ntawm cov khoom tiav. Peb 8011 alloys txhua tus underwent tib yam txias dov, nruab nrab annealing, thiab ntawv ci dov hla mus kom tau tiav aluminium foils ntawm tib lub thickness. Lub zog tensile ntawm cov alloy pom qhov sib txawv nrog qhov nce ntawm Cu cov ntsiab lus. Tom qab qhov kev sim ci, lub zog tensile ntawm 8011-3 alloy nrog ntau dua Cu cov ntsiab lus txo los ntawm 24.1%, lub zog tensile ntawm 8011-2 alloy txo los ntawm 30.9%, thiab lub zog tensile ntawm 8011-1 alloy txo los ntawm 33.3% . Nws tuaj yeem pom tias nrog qhov nce ntawm Cu cov ntsiab lus, kev ua haujlwm ruaj khov ntawm cov hlau tom qab ci zoo li nce.

Hauv kev sim ci, Txij li thaum lub ci tsis kam ntawm aluminium ntawv ci yog ze ze rau cov cwj pwm recrystallization ntawm cov hlau, txhawm rau sib piv thiab kawm txog tus cwj pwm recrystallization ntawm peb 8011 alloys, peb 8011 alloy tiav cov khoom tau raug rau 180 ℃, Annealing ntawm 200 ℃ , 220 ℃ , 240 ℃ , 260 ℃ , 280 ℃ rau 3h, cov qhabnias qhia tau hais tias lub annealing stability ntawm 8011-3 alloy yog siab dua li ntawm 8011-2 thiab 8011-1 hlau alloy, 8011 nyob rau tib lub annealing kub thiab lub sij hawm. -3 alloys muaj tsawg recrystallization thiab softening degree.

Ntxiv rau, peb kuj tau ua qhov ntsuas tus nqi dyne thiab kuaj pinhole ntawm peb 8011 alloys. Cov txiaj ntsig kev sim qhia tau hais tias tus nqi dyne thiab tus lej pinhole ntawm peb cov alloys tag nrho ua tau raws li tus qauv.

Rau qhov 8011 hlau alloy, nyob rau hauv ib tug tej yam, nrog rau qhov nce ntawm cov kab hlau rhuav tshem cov ntsiab lus Cu, cov khoom siv ntxiv dag zog rau cov nyhuv yog ntau dua, yog li lub zog ntawm cov 8011-3 alloy tiav cov khoom yog siab dua li ntawm cov 8011-2 thiab 8011-1 alloys.

Cu tuaj yeem tsim ib qho me me ntawm CuA12 compound los ntawm cov kua dej nag hauv aluminium alloy. CuA12 compound muaj qhov tsis sib xws thiab du, thiab yog intermittently faib nyob rau hauv lub grain ciam teb nyob rau hauv ib tug skeletal zoo, uas plays lub luag hauj lwm nyob rau hauv dislocation pinning nyob rau hauv lub tom ntej aluminium foil ua thiab deformation txheej txheem; Qhov laj thawj yog tias Cu feem ntau muaj nyob rau hauv daim ntawv ntawm cov kua hauv Al, thiab lawv yog ib qho yooj yim mus sau ib ncig ntawm dislocations. Qhov tsim ntawm Coriolis huab cua loj txo cov lattice distortion, txo cov elastic kev cuam tshuam ntawm cov atoms thiab dislocations, ua rau dislocations nyob rau hauv ib lub xeev ruaj khov, txo tus naj npawb ntawm movable dislocations, inhibits qhov recombination ntawm dislocations, thiab inhibits recombination ntawm dislocations. Crystal nucleation thiab nucleation loj hlob, yog li ua kom lub zog alloy thiab recrystallization kub ntawm cov ntawv txhuas tiav.

Thib ob, Cov lej ntawm Cu cov ntsiab lus kuj tseem tuaj yeem tsim cov theem nrab, uas cuam tshuam qhov interfacial migration ntawm recrystallized nuclei thiab cuam tshuam kev loj hlob ntawm recrystallized nplej. Hauv luv, nyob rau hauv ib tug tej yam, nce cov ntsiab lus ntawm kab hlau rhuav cov ntsiab lus Cu tuaj yeem ua rau kom qhov kub thiab txias recrystallization ntawm cov hlau thiab txhim kho cov cua sov kom ruaj khov ntawm cov hlau.. Nws tuaj yeem pom tias microalloying yog ib txoj hauv kev tseem ceeb los txhim kho cov cua sov ntawm cov hlau.

3 Xaus
1) Cov 8011-3 alloy thiab 8011-2 alloy tom qab nce cov ntsiab lus Cu tuaj yeem ua tau raws li cov neeg siv khoom xav tau ntawm cov khoom siv tshuab tiav, nto dyne, thiab tus naj npawb ntawm pinholes.
2) Nrog rau qhov nce ntawm Cu cov ntsiab lus, lub zog tensile ntawm 8011 alloy maj mam nce; tib lub sijhawm, lub recrystallization kub ntawm cov hlau kuj nce maj mam.
3) Tom qab qhov kev sim ci ntawm 240 ℃ / 75S, lub zog tensile ntawm 8011-3 alloy nrog ntau dua Cu cov ntsiab lus txo los ntawm 24.1%, thiab lub zog tensile ntawm 8011-2 alloy txo los ntawm 30.9%; Tensile zog txo los ntawm 33.3%. 8011-3 alloy qhia tsawg variation nyob rau hauv cov khoom dua 8011-2 thiab 8011-1. Ua kom cov ntsiab lus Cu pab txhim kho qhov ci ua haujlwm ntawm cov ntawv ci tiav tiav.

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