Aluminiyamu Aluminiyamu Apamwamba Kwambiri: Al-Sc Aloyi

Aluminiyamu Aluminiyamu Apamwamba Kwambiri: Al-Sc Aloyi

Al-Sc alloy ndi mtundu wa aluminiyamu wochita bwino kwambiri. Pali njira zingapo zopititsira patsogolo magwiridwe antchito a aloyi ya aluminiyamu, yomwe kulimbikitsa ndi kulimba kwa ma micro-alloying ndi gawo laling'ono la kafukufuku wopangidwa ndi aluminiyamu wazaka 20 zaposachedwa.

Malo osungunuka a scandium ndi 1541 ℃, ndipo aluminiyumu ndi 660 ℃, kotero scandium iyenera kuwonjezeredwa ku aluminiyamu alloy mu mawonekedwe a master alloy, omwe ndi ofunika kwambiri pokonzekera aluminium alloy yokhala ndi scandium. Pali njira zingapo zokonzekera ma aloyi ambuye, monga njira ya doping, scandium fluoride, scandium oxide zitsulo zochepetsera kutentha, njira yosungunuka yamchere ya electrolysis ndi zina zotero. “

Doping njira ndi kuwonjezera mwachindunji zitsulo scandium kuti zitsulo zotayidwa aloyi, amene ndi okwera mtengo, kuwotcha kutaya mu ndondomeko smelting ndi mtengo mkulu wa aloyi aloyi.

Poizoni wa haidrojeni fluoride ntchito yokonza scandium fluoride ndi zitsulo matenthedwe kuchepetsa njira scandium fluoride, amene ali zida zovuta ndi mkulu zitsulo kuchepetsa kutentha kutentha.

The kuchira mlingo wa scandium ndi zitsulo matenthedwe kuchepetsa scandium okusayidi ndi 80% okha;

Chipangizo cha electrolysis chosungunuka cha mchere chimakhala chovuta ndipo kutembenuka sikuli kwakukulu.

Pambuyo poyerekezera ndi kusankha, ndi koyenera kwambiri kukonzekera Al-Sc master alloy pogwiritsa ntchito ScCl wosungunuka mchere njira Al-Mg kuchepetsa kutentha.

Zogwiritsa:

Kuonjezera trace scandium ku aluminiyamu alloy kungalimbikitse kukonzanso kwambewu ndikuwonjezera kutentha kwa recrystallization ndi 250.℃~ 280℃. Ndiwoyenga wambewu wamphamvu komanso woletsa kukonzanso kwa aluminiyamu aloyi, yomwe imakhala ndi chikoka pa th.E kapangidwe ndi katundu wa aloyi ndi kwambiri bwino mphamvu zake, kuuma, weldability ndi dzimbiri kukana.

Scandium imakhala ndi mphamvu yobalalika bwino pa aluminiyamu, ndipo imasunga mawonekedwe osasunthika osasunthika pogwira ntchito yotentha kapena pochiza annealing. Ma alloys ena ndi mapepala ozizira okulungidwa okhala ndi mapindikidwe akulu, omwe amasungabe dongosololi ngakhale annealing. Kuletsa kwa scandium pa recrystallization kumatha kuthetsa mawonekedwe a recrystallization mu malo okhudzidwa ndi kutentha kwa weld, The subgrain dongosolo la masanjidwewo limatha kusamutsidwa mwachindunji ku mawonekedwe a chitsulo chosungunula, chomwe chimapangitsa kuti ophatikizana osakanikirana a aluminiyamu alloy omwe ali ndi scandium akhale nawo. mkulu mphamvu ndi dzimbiri kukana.

Zotsatira za scandium pa kukana kwa dzimbiri kwa aluminiyamu aloyi ndi chifukwa cha kuyenga tirigu ndi chopinga wa recrystallization ndondomeko.

Kuwonjezera kwa scandium kungapangitsenso kuti aloyi ya aluminiyumu ikhale ndi superplasticity yabwino, ndi elongation ya aloyi ya aluminium ndi 0.5% scandium imatha kufika 1100% pambuyo pa chithandizo cha superplastic.

Choncho, aloyi Al-Sc akuyembekezeka kukhala mbadwo watsopano wa zipangizo opepuka structural kwa Azamlengalenga, ndege ndi zombo mafakitale, amene makamaka ntchito kuwotcherera katundu structural mbali zazamlengalenga, ndege ndi sitima, zitsulo zotayidwa aloyi mapaipi kwa zamchere dzimbiri chilengedwe sing'anga, matanki amafuta a njanji, zigawo zazikulu zamasitima othamanga kwambiri, etc

Chiyembekezo cha ntchito:

Sc-containing aluminium alloy ali ndi chiyembekezo chogwiritsa ntchito m'madipatimenti apamwamba kwambiri monga zombo, makampani opanga ndege, rocket ndi missile, mphamvu ya nyukiliya, ndi zina zotero. Aluminiyamu aloyi zipangizo zochokera alipo zotayidwa aloyi, monga kopitilira muyeso-mkulu mphamvu ndi mkulu toughness zitsulo zotayidwa aloyi, mkulu-mphamvu Aluminiyamu yosamva dzimbiri, aloyi yamphamvu kwambiri ya nyutroni yolimbana ndi aluminiyamu ndi zina zotero. Ma alloy awa adzakhala ndi chiyembekezo chowoneka bwino chogwiritsa ntchito muzamlengalenga, mphamvu za nyukiliya ndi mafakitale omanga zombo chifukwa chazinthu zawo zomveka bwino, komanso zitha kugwiritsidwa ntchito pamagalimoto opepuka. ndi masitima othamanga kwambiri. Choncho, scandium munali zotayidwa aloyi wakhala wina wokongola komanso mpikisano kwambiri mkulu-ntchito zotayidwa aloyi structural zakuthupi pambuyo AlLi aloyi.China ndi wolemera mu scandium chuma ndipo ali ndi maziko enaake kafukufuku scandium ndi kupanga mafakitale, amene akadali kunja waukulu wa scandium oxide. Ndikofunikira kwanthawi yayitali kupanga zida zotayidwa za aluminiyamu zomanga zapamwamba komanso chitetezo cha dziko ku China, ndipo zitha AlSc kupereka kusewera kwathunthu kwaubwino wazinthu za scandium ku China ndikulimbikitsa chitukuko chamakampani a scandium ndi chuma cha dziko ku China. .