Vanadium yana samar da fili na refractory na VAl11 a cikin alloy na aluminium, wanda ke taka rawa wajen tace hatsi a cikin narkewa da tsarin simintin gyare-gyare, amma tasirin ya yi ƙasa da na titanium da zirconium. Har ila yau, Vanadium yana da tasiri na gyaran tsarin recrystallization da kuma ƙara yawan zafin jiki na recrystallization.
Ƙaƙƙarfan solubility na alli a cikin aluminum gami yana da ƙasa sosai, kuma yana samar da fili na CaAl4 tare da aluminum. Calcium kuma wani abu ne na musamman na aluminum gami. Aluminum gami da kusan 5% alli da 5% manganese yana da superplasticity. Calcium da silicon sun zama CaSi, wanda ba a iya narkewa a cikin aluminum. Tun da adadin m bayani na silicon aka rage, da conductivity na masana'antu tsarki aluminum za a iya dan kadan inganta. Calcium na iya inganta aikin yankan na aluminum gami. CaSi2 ba zai iya ƙarfafa maganin zafi na aluminum gami ba. Trace calcium yana da amfani don cire hydrogen a cikin narkakkar aluminum.
Lead, tin, da bismuth abubuwan karafa ne masu ƙarancin narkewa. Suna da ɗan ƙaramin ƙarfi mai ƙarfi a cikin aluminum, wanda ɗan rage ƙarfin gami, amma yana iya haɓaka aikin yankewa. Bismuth yana faɗaɗa lokacin ƙarfafawa, wanda ke da amfani ga ciyarwa. Ƙara bismuth zuwa manyan abubuwan haɗin magnesium na iya hana "rashin sodium".
An fi amfani da Antimony azaman mai gyarawa a cikin simintin ƙarfe na aluminium, kuma ba kasafai ake amfani da shi a cikin na'urori na aluminum da aka ƙera ba. Matsakaicin bismuth kawai a cikin Al-Mg da aka ƙera kayan alumini don hana haɓakar sodium. Lokacin da aka ƙara sinadarin antimony zuwa wasu allunan Al-Zn-Mg-Cu, ana iya inganta aikin latsa zafi da latsa sanyi.
Beryllium na iya inganta tsarin fim din oxide a cikin kayan aikin aluminum da aka yi da kuma rage hasara mai ƙonawa da haɗawa yayin yin simintin. Beryllium abu ne mai guba wanda zai iya haifar da guba. Don haka, allunan aluminum waɗanda ke haɗuwa da abinci da abubuwan sha ba za su iya ƙunsar beryllium ba. Abubuwan da ke cikin beryllium a cikin kayan walda yawanci ana sarrafa su a ƙasa 8μg/ml. Gilashin aluminum da aka yi amfani da shi azaman tushen walda shima yakamata ya sarrafa abun ciki na beryllium.
Sodium kusan ba zai iya narkewa a cikin aluminum, matsakaicin ƙarfi mai ƙarfi bai wuce 0.0025% ba, kuma madaidaicin narkewar sodium yana da ƙasa (97.8°C). Lokacin da sodium ya kasance a cikin gami, ana tallata shi akan saman dendrites ko iyakokin hatsi yayin ƙarfafawa. A lokacin sarrafa zafi, sodium a kan iyakar hatsi yana samar da Layer adsorption na ruwa, kuma lokacin da raguwa ya faru, NaAlSi fili yana samuwa, babu sodium kyauta, kuma "sodium brittleness" ba ya faruwa. Lokacin da abun ciki na magnesium ya wuce 2%, magnesium zai ɗauki silicon kuma ya zubar da sodium kyauta, wanda zai haifar da "sodium embrittlement". Don haka, ba a ba da izinin gawawwakin aluminium mai girma-magnesium su yi amfani da ruwan gishiri na sodium ba. Hanyar hana "sodium embrittlement" ita ce hanyar chlorination, wanda ke sa sodium ya zama NaCl kuma ya watsar da shi a cikin slag, kuma ya kara da bismuth ya zama Na2Bi da shigar da matrix karfe; ƙara antimony don samar da Na3Sb ko ƙara ƙasa mai wuya kuma na iya taka rawa iri ɗaya.
May Jiang ta gyara daga MAT Aluminum
Lokacin aikawa: Nov-11-2023
