Dab tsi yog lub luag haujlwm ntawm titanium hauv steel?
1. Cov nyhuv ntawm titanium ntawm microstructure thiab kev kho cua sov ntawm cov hlau
①Titanium muaj kev sib raug zoo nrog nitrogen, oxygen, thiab carbon. Nws yog ib qho zoo deoxidizer thiab cov khoom siv zoo rau nitrogen thiab carbon fixation.
② Cov khoom sib xyaw ntawm titanium thiab carbon (TiC) muaj zog ruaj khov thiab ruaj khov. Tsuas yog thaum rhuab mus rau saum 1000 degree nws yuav maj mam yaj mus rau hauv cov khoom tov ntawm hlau. TiC particles tiv thaiv steel nplej los ntawm kev loj hlob thiab coarsening.
③Titanium yog ib qho ntawm cov muaj zog ferrite tsim cov ntsiab lus, txo qhov austenite theem cheeb tsam. Kev daws teeb meem titanium txhim kho lub hardenability ntawm steel, thaum lub xub ntiag ntawm TiC hais txo cov hardenability ntawm hlau.
④Thaum cov ntsiab lus titanium ncav cuag ib qho nqi, nag lossis daus tuaj yeem tshwm sim vim qhov tawg thiab nag lossis daus ntawm TiFe2.
2. Cov nyhuv ntawm titanium rau cov khoom siv ntawm cov hlau
① Thaum titanium muaj nyob rau hauv ferrite nyob rau hauv ib qho kev daws teeb meem, nws cov nyhuv zog yog siab dua li ntawm txhuas, manganese, npib tsib xee, molybdenum, thiab lwm yam, thiab qis dua beryllium, phosphorus, tooj liab, thiab silicon.
②Qhov cuam tshuam ntawm titanium ntawm cov khoom siv ntawm cov hlau nyob ntawm nws daim ntawv muaj nyob, cov ntsiab lus piv ntawm Ti rau C thiab txoj kev kho cua sov. Thaum cov feem loj ntawm titanium nyob nruab nrab ntawm {{0}}.03% thiab 0.1%, lub zog tawm los tuaj yeem nce ntxiv. Tab sis thaum cov ntsiab lus piv ntawm Ti rau C tshaj 4, nws lub zog thiab toughness txo qis sharply.
③Titanium tuaj yeem txhim kho lub zog ruaj khov thiab nkag mus.
④Titanium tuaj yeem txhim kho qhov toughness ntawm cov hlau, tshwj xeeb tshaj yog kub tsis tshua muaj kev cuam tshuam toughness.
3. Kev cuam tshuam ntawm titanium rau lub cev, tshuaj thiab txheej txheem ntawm cov hlau
① Txhim kho qhov ruaj khov ntawm cov hlau nyob rau hauv qhov kub thiab txias, siab siab thiab hydrogen.
②Titanium tuaj yeem txhim kho corrosion kuj ntawm stainless acid-resistant steel, tshwj xeeb tshaj yog tsis kam mus rau intergranular corrosion.
③ Hauv cov pa roj carbon tsawg, thaum cov ntsiab lus piv ntawm Ti rau C nce siab tshaj 4.5, oxygen, nitrogen, thiab carbon yog tag nrho ruaj khov, yog li nws muaj kev tiv thaiv zoo rau kev ntxhov siab corrosion thiab alkali embrittlement.
④ Ntxiv titanium rau hlau nrog cov ntsiab lus chromium ntawm 4% -6% tuaj yeem txhim kho oxidation tsis kam ntawm cov hlau ntawm qhov kub thiab txias.
⑤ Ntxiv titanium rau hlau tuaj yeem txhawb kev tsim cov txheej txheem nitride thiab tau txais qhov yuav tsum tau ua kom tawv tawv sai dua. Titanium-muaj hlau yog hu ua "sai nitriding steel" thiab tuaj yeem siv los ua cov ntsia hlau siab.
⑥ Txhim kho lub weldability ntawm tsawg carbon manganese hlau thiab siab alloy stainless hlau
4. Daim ntawv thov ntawm titanium hauv hlau
①Thaum qhov seem ntawm titanium ntau tshaj 0.025%, nws tuaj yeem suav tias yog cov khoom siv hlau.
② Raws li cov khoom siv hlau, titanium yog siv dav hauv cov hlau tsis tshua muaj hlau, hlau hlau, cov cuab yeej hlau hlau, cov cuab yeej siv siab ceev, cov hlau tsis muaj kua qaub-resistant, kub-resistant thiab xeb-pov thawj, cov hlau nplaum ruaj khov thiab cam khwb cia. hlau.
③Titanium tau siv los ua ntau yam khoom siv siab heev thiab tau dhau los ua cov khoom siv tseem ceeb. Nws yog siv nyob rau hauv ntau tshaj li ib nrab ntawm aerospace kev lag luam, xws li aerospace tsheb, lub hwj chim machinery, thiab lwm yam.
