Umthelela Wezinto Ezingahlanzekile ku-Aluminium Alloy

I-Vanadium yakha i-VAL11 refractory compound ku-aluminium alloy, edlala indima ekucwengeni okusanhlamvu enqubweni yokuncibilika nokuphonsa, kodwa umphumela mncane kunalowo we-titanium ne-zirconium. I-Vanadium nayo inomphumela wokucwenga ukwakheka kabusha kwe-recrystallization kanye nokwandisa izinga lokushisa lokuvuselela kabusha.

Ukunyibilika okuqinile kwe-calcium ku-aluminium alloy kuphansi kakhulu, futhi kwenza inhlanganisela ye-CaAl4 ne-aluminium. I-calcium nayo iyingxenye ye-superplastic ye-aluminium alloy. I-aluminium alloy ene-calcium engaba ngu-5% kanye ne-manganese engu-5% ine-superplasticity. I-calcium ne-silicon yenza i-CaSi, engancibiliki ku-aluminium. Njengoba inani lesixazululo esiqinile se-silicon lincishisiwe, ukuqhutshwa kwe-aluminium ehlanzekile yezimboni kungathuthukiswa kancane. I-calcium ingathuthukisa ukusebenza kokusika kwe-aluminium alloy. I-CaSi2 ayikwazi ukuqinisa ukwelashwa kokushisa kwe-aluminium alloy. I-Trace calcium inenzuzo ukukhipha i-hydrogen ku-aluminium encibilikisiwe.

Izakhi zomthofu, zethini, ne-bismuth ziyizinsimbi ezincibilika kancane. Zinokuncibilika okuncane okuqinile ku-aluminium, okunciphisa kancane amandla e-alloy, kodwa kungathuthukisa ukusebenza kokusika. I-Bismuth iyakhula ngesikhathi sokuqina, okuzuzisa ukuphakela. Ukwengeza i-bismuth kuma-alloys e-magnesium aphezulu kungavimbela "i-sodium brittleness".

I-Antimony isetshenziswa kakhulu njengesilungisi kuma-alloys e-aluminium ekhonjiwe, futhi ayivamisile ukusetshenziswa kuma-alloys e-aluminium enziwe. Faka esikhundleni se-bismuth kuphela kuma-alloys e-aluminium enziwe i-Al-Mg ukuze uvimbele ukukhishwa kwe-sodium. Uma i-antimony element yengezwa kwamanye ama-alloys e-Al-Zn-Mg-Cu, ukusebenza kokucindezela okushisayo nokucindezela okubandayo kungathuthukiswa.

I-Berryllium ingathuthukisa ukwakheka kwefilimu ye-oxide ku-alloy eyenziwe ye-aluminium futhi inciphise ukulahlekelwa okuvuthayo kanye nokufakwa ngesikhathi sokuphonsa. I-Beryllium iyisici esinobuthi esingabangela ukungezwani komzimba. Ngakho-ke, ama-alloys e-aluminium ahlangana nokudla neziphuzo awakwazi ukuqukatha i-beryllium. Okuqukethwe kwe-beryllium ezintweni zokushisela ngokuvamile kulawulwa ngaphansi kwe-8μg/ml. I-aluminium alloy esetshenziswa njengesisekelo sokushisela kufanele futhi ilawule okuqukethwe kwe-beryllium.

I-sodium icishe ingancibiliki ku-aluminium, ukuncibilika okuqinile okuphezulu kungaphansi kuka-0.0025%, futhi indawo yokuncibilika yesodium iphansi (97.8°C). Uma i-sodium ikhona ku-alloy, i-adsorbed phezu kwama-dendrites noma imingcele yokusanhlamvu ngesikhathi sokuqina. Ngesikhathi sokucubungula okushisayo, i-sodium emngceleni wokusanhlamvu yenza ungqimba lwe-adsorption ye-liquid, futhi lapho ukuqhekeka kwe-brittle kwenzeka, inhlanganisela ye-NaAlSi iyakhiwa, ayikho i-sodium yamahhala ekhona, futhi "i-sodium brittleness" ayenzeki. Uma okuqukethwe kwe-magnesium kudlula u-2%, i-magnesium izothatha i-silicon futhi ibangele i-sodium yamahhala, okuholela "ekuhlanganiseni kwe-sodium". Ngakho-ke, i-high-magnesium aluminium alloys ayivunyelwe ukusebenzisa usawoti we-sodium. Indlela yokuvimbela "i-sodium embrittlement" iyindlela ye-chlorination, eyenza ifomu le-sodium i-NaCl futhi iyikhiphe ku-slag, futhi yengeze i-bismuth ukuze iyenze i-Na2Bi futhi ifake i-matrix yensimbi; ukwengeza i-antimony ukwenza i-Na3Sb noma ukwengeza umhlaba ongavamile nakho kungadlala indima efanayo.

Ihlelwe nguMay Jiang evela kwaMAT Aluminium