Titanium Alloy Steel Phaj

Titanium alloy yog ib qho alloy uas muaj titanium raws li lub hauv paus thiab lwm yam ntxiv.Titanium muaj ob hom homogenous thiab heterogeneous crystals: ib tug densely packed hexagonal qauv hauv qab no 882 ℃ α Titanium, lub cev centered cubic saum toj no 882 ℃ β Titanium.

Alloy cov ntsiab lus tuaj yeem muab faib ua peb pawg raws li lawv cov kev cuam tshuam ntawm theem hloov pauv kub:

① Stable α Cov ntsiab lus uas ua rau cov theem hloov pauv kub yog α Cov ntsiab lus ruaj khov muaj xws li txhuas, carbon, oxygen, thiab nitrogen.Aluminium yog lub ntsiab alloying ntawm titanium alloy, uas muaj kev cuam tshuam tseem ceeb ntawm kev txhim kho chav tsev kub thiab siab kub lub zog ntawm cov hlau, txo qhov tshwj xeeb lub ntiajteb txawj nqus, thiab nce elastic modulus.

② Stable β Cov ntsiab lus uas txo cov theem hloov pauv kub yog β Cov ntsiab lus ruaj khov tuaj yeem muab faib ua ob hom: isomorphic thiab eutectoid.Cov khoom siv titanium alloy Cov qub muaj xws li molybdenum, niobium, vanadium, thiab lwm yam;Cov tom kawg suav nrog chromium, manganese, tooj liab, hlau, silicon, thiab lwm yam.

③ Cov ntsiab lus nruab nrab xws li zirconium thiab tin muaj qhov cuam tshuam me ntsis rau lub sijhawm hloov pauv kub.Oxygen, nitrogen, carbon, thiab hydrogen yog lub ntsiab impurities hauv titanium alloys.Oxygen thiab nitrogen nyob rau hauv α Muaj ib tug siab solubility nyob rau hauv lub theem, uas muaj ib tug tseem ceeb ntxiv dag zog rau cov titanium alloys, tab sis nws txo plasticity.Cov ntsiab lus oxygen thiab nitrogen hauv titanium feem ntau tau teev tseg kom qis dua 0.15 ~ 0.2% thiab 0.04 ~ 0.05%, feem.Hydrogen nyob rau hauv α Lub solubility nyob rau hauv lub theem yog tsawg heev, thiab ntau heev hydrogen yaj nyob rau hauv titanium alloys yuav tsim hydrides, ua rau cov alloy nkig.Cov ntsiab lus hydrogen hauv titanium alloys feem ntau yog tswj hauv qab 0.015%.Lub dissolution ntawm hydrogen hauv titanium yog thim rov qab thiab tuaj yeem raug tshem tawm los ntawm lub tshuab nqus tsev annealing.