Mokhoa oa ho khetha sejana sa titanium alloy

Titanium alloy ke motsoako o entsoeng ka titanium le likarolo tse ling.Titanium e na le mefuta e 'meli ea likristale tsa homogeneous le heterogeneous: sebopeho se haufi-ufi sa hexagonal ka tlase ho 882 ℃ α Titanium, 'mele o bohareng ba cubic ka holimo ho 882 ℃ β Titanium.Joale a re re basebetsi-'moho le Lefapha la Theknoloji la RSM ho arolelana mokhoa oa khetho oa lipoleiti tsa alloy tsa titanium

　　Litlhoko tsa tekheniki:

1. Motsoako oa lik'hemik'hale oa poleiti ea titanium alloy e tla lumellana le litokisetso tsa GB/T 3620.1, 'me ho kheloha ho lumelletsoeng ha motsoako oa lik'hemik'hale ho tla lumellana le litokisetso tsa GB/T 3620.2 ha Demander a hlahloba hape.

2. Phoso e lumelletsoeng ea botenya ba poleiti e tla lumellana le lipehelo tse ho Lethathamo la I.

3. Phoso e lumelletsoeng ea bophara le bolelele ba poleiti e tla lumellana le lipehelo tse ho Lethathamo la II.

4. Sekhutlo se seng le se seng sa poleiti se tla khaoloa ka lehlakoreng le letona ka hohle kamoo ho ka khonehang, 'me ho khaola oblique ho ke ke ha feta ho kheloha ho lumelletsoeng ha bolelele le bophara ba poleiti.

Lintho tsa alloy li ka aroloa ka mekhahlelo e meraro ho latela tšusumetso ea tsona ho mocheso oa phetoho:

① E tsitsitseng α Phase, likarolo tse eketsang mocheso oa phetoho ea mohato ke α Lintho tse tsitsitseng li kenyelletsa aluminium, carbon, oxygen le nitrogen.Aluminium ke karolo e ka sehloohong ea motsoako oa titanium alloy, e nang le liphello tse hlakileng ho ntlafatsa matla a motsoako mochesong oa kamore le mocheso o phahameng, ho fokotsa matla a khoheli le ho eketsa modulus ea elastic.

② E tsitsitseng β Phase, likarolo tse fokotsang mocheso oa phetoho ea mohato ke β Lintho tse tsitsitseng li ka aroloa ka mefuta e 'meli: isomorphic le eutectoid.Ho sebelisoa lihlahisoa tsa alloy tsa Titanium.Ea pele e kenyelletsa molybdenum, niobium, vanadium, joalo-joalo;Ea ho qetela e kenyelletsa chromium, manganese, koporo, tšepe, silicon, joalo-joalo.

③ Lintho tse sa nke lehlakore, joalo ka zirconium le tin, li na le phello e fokolang ho mocheso oa phetoho ea mohato.

Oksijene, naetrojene, k'habone le hydrogen ke litšila tse ka sehloohong tsa li-alloys tsa titanium.Oksijene le naetrojene ho α Ho na le solubility e kholo karolong, e nang le phello e matla e matlafatsang ho alloy ea titanium, empa e fokotsa polasetiki.Ka kakaretso ho boleloa hore litaba tsa oksijene le naetrojene ho titanium ke 0.15 ~ 0.2% le 0.04 ~ 0.05% ka ho latellana.Hydrogen in α The solubility mokhahlelong o monyenyane haholo, 'me haedrojene e ngata haholo e qhibilihisitsoeng ka har'a motsoako oa titanium e tla hlahisa hydride, e leng se etsang hore alloy e brittle.Ka kakaretso, dikahare tsa hydrogen ka har'a alloy ea titanium e laoloa ka tlase ho 0.015%.Ho qhibiliha ha hydrogen ho titanium ho ka khutlisetsoa morao 'me ho ka tlosoa ka vacuum annealing.