11
2024
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07
Mokhoa oa ho khetha lipoleiti tsa Titanium
Mokhoa oa ho khetha poleiti ea titanium
Lintho tsa alloying li ka aroloa ka mekhahlelo e meraro ho latela tšusumetso ea tsona ho mocheso oa phetoho ea karolo:
1.Lintho tse tsitsang karolo ea α le ho eketsa mocheso oa phetoho ea mohato ke α likarolo tse tsitsitseng, tse kang aluminium, carbon, oxygen, le nitrogen. Har'a tsona, aluminium ke motsoako o ka sehloohong oa motsoako oa titanium, o nang le liphello tse hlakileng ho ntlafatsa mocheso o tloaelehileng oa motsoako le matla a mocheso o phahameng, ho fokotsa matla a khoheli le ho eketsa modulus ea elastic.
2. Ntho e tsitsisang karolo ea β le ho fokotsa mocheso oa phetoho ea mohato ke karolo ea β-stabilizing, e ka aroloa ka mefuta e 'meli: isomorphic le eutectoid. Lihlahisoa tse sebelisang li-alloys tsa titanium li kenyelletsa molybdenum, niobium, le vanadium; ea morao-rao e kenyelletsa chromium, manganese, koporo, tšepe le silicon.
3. Lintho tse nang le phello e fokolang mocheso oa phetoho ea mohato ke likarolo tse sa nke lehlakore, tse kang Zr, Sn, joalo-joalo.
Oksijene, naetrojene, k'habone le hydrogen ke litšila tse ka sehloohong tsa li-alloys tsa titanium. Oksijene le naetrojene li na le ho qhibiliha ho hoholo karolong ea α, e nang le phello e matla ea ho matlafatsa motsoako oa titanium, empa e fokotsa polasetiki. Hangata ho boleloa hore litaba tsa oksijene le naetrojene ka titanium li lokela ho ba ka tlase ho 0.15-0.2% le 0.04-0.05% ka ho latellana. Ho qhibiliha ha haedrojene karolong ea α e nyenyane haholo, 'me haedrojene e ngata haholo e qhibilihisitsoeng ka har'a motsoako oa titanium e tla hlahisa li-hydrides, tse tla etsa hore alloy e brittle. Ka kakaretso, dikahare tsa hydrogen ka har'a li-alloys tsa titanium li laoloa ka tlase ho 0.015%. Ho qhibiliha ha hydrogen ho titanium ho ka khutlisetsoa morao 'me ho ka tlosoa ka vacuum annealing.
Litaba tse Amanang
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