INTRO
Ntshiab titanium muaj cov cuab yeej nthuav dav - nws hloov nws cov qauv siv lead ua thaum kub nce. Hauv qab ntawm 882 degree, nws muaj nyob rau hauv dab tsi metallurgists hu uaalpha ( ) theem, kaw - ntim hexagonal qauv. Tshaj ntawd kub, nws hloov mus rau qhovbeta () theem, uas yog lub cev -centered cubic. Qhov kev hloov pauv ntawd yog qhov tseem ceeb hauv kev siv titanium metallurgy, thiab yuav ua li cas lub ntsiab alloying cuam tshuam rau nws txiav txim seb qhov twg ntawm peb pawg uas lub caij poob rau hauv.
1. Alpha-Stabilizing Elements
Cov ntsiab lus no nce qhov kub ntawm beta transus, txhais tau tias lawv ua rau alpha theem ruaj khov nyob rau hauv ntau qhov kub thiab txias. Lawv nthuav dav alpha theem teb ntawm daim duab qhia theem thiab zoo li ua kom zoo dua cov qauv nplej, txhawb nqa lub zog thiab kub ua haujlwm.
Qhov tseem ceeb tshaj plaws alpha stabilizer hauv kev xyaum yogaluminium (Al). Nws yog siv nyob rau hauv yuav luag txhua lub lag luam titanium alloy - nws txhim kho lub zog ntawm chav tsev kub thiab kub siab, thiab nws txo qhov ceev tib lub sijhawm. Qhov kev sib xyaw ua ke yog qhov nyuaj rau kev sib tw, thiab nws yog vim li cas aluminium yog yuav luag ib feem ntawm kev sib xyaw.
Lwm cov alpha stabilizers suav nrogcarbon, oxygen, nitrogen, gallium, germanium, thiab boron. Ib lo lus ceeb toom ntawm oxygen thiab nitrogen: thaum lawv ua kom muaj zog, lawv kuj txo cov ductility. Hauv kev tsim khoom, cov no feem ntau raug kho raws li impurities thiab khaws cia hauv kev tswj nruj es tsis txhob txhob txwm tshaj tawm.
Alpha-stabilized alloys yog cov pob txha ntawm covtshav kub-resistant titanium alloytsev neeg - hom siv dav hlau cov khoom siv dav hlau, cov tshuab tso pa tawm, thiab lwm yam kev siv siab - kub.
2. Beta-Stabilizing Elements
Cov no ua qhov opposite: lawvqisbeta transus kub thiab nthuav dav beta theem cheeb tsam. Nyob rau hauv qhov tseeb, lawv tso cai rau theem beta nyob ruaj khov ntawm qhov kub thiab txias qhov twg titanium ntshiab yuav tau hloov mus rau hauv alpha. Beta-theem titanium muaj lub cev -cov qauv ntsuas kub, uas feem ntau muab cov tawv tawv zoo dua thiab txhim kho kev ua haujlwm.
Feem ntau beta stabilizers suav nrogMolybdenum (Mo), vanadium (V), thiab niobium (Nb). Molybdenum yog ib qho muaj zog tshaj plaws - txawm tias me me ntxiv muaj qhov cuam tshuam loj rau kev ruaj khov beta. Vanadium yog dav siv nyob rau hauv cov txheej txheem alloys zoo li Ti-6Al-4V, ib tug ntau tshaj titanium alloy nyob rau hauv lub ntiaj teb no.
Beta-stabilized alloys zoo li yooj yim dua rau txias- daim ntawv thiab teb zoo rau kev kho cua sov, uas ua rau lawv txaus nyiam rau cov ntawv thov uas xav tau kev sib sau ua ke lossis siab tawv.
3. Cov ntsiab lus nruab nrab
Qhov no yog qeb ncaj ncees tshaj plaws. Cov ntsiab lus nruab nrab muajQhov cuam tshuam tsawg kawg nkaus ntawm beta transus kub- lawv tsis ruaj khov alpha lossis beta rau ib qho tseem ceeb. Lawv lub hom phiaj tseem ceeb yogkev daws teeb meem ntxiv dag zog: Lawv yaj mus rau hauv titanium matrix thiab txhim kho cov khoom siv kho tshuab yam tsis muaj kev cuam tshuam cov theem sib npaug.
Lub ntsiab nruab nrab yogZirconium (Zr), tin (Sn), thiab hafnium (Hf).
Txhua tus coj qee yam txawv me ntsis rau lub rooj. Tin tuaj yeem txhim kho qhov siab - qhov kub thiab txias tsis kam. Zirconium muaj ib txoj hauv kev los ua kom zoo- kho lub zog yam tsis tau hloov cov theem sib npaug, uas ua rau cov neeg siv khoom siv metallurgists muaj txiaj ntsig zoo rau kev ua kom zoo ntawm cov hlau tsis muaj kev cuam tshuam rau lub microstructure.
Vim Li Cas Qhov Tseem Ceeb
To taub peb pawg no tsis yog kev kawm xwb. Thaum koj xaiv cov titanium alloy rau ib daim ntawv thov tshwj xeeb - seb qhov ntawd yog aerospace fasteners, cov khoom siv tshuaj lom neeg, lossis cov khoom siv vaj tsev ua ke - kev sib xyaw ua ke ntawm alpha stabilizers, beta stabilizers, thiab cov khoom nruab nrab hauv cov hlau txiav txim siab nws lub zog, ductility, corrosion resistance, formability, thiab formability.
Rau ib tus neeg ua haujlwm nrog titanium raw cov ntaub ntawv, muaj kev nkag siab yooj yim ntawm cov ntsiab lus no cuam tshuam nrog titanium cov qauv theem yuav pab kom paub tias vim li cas cov hlau sib txawv coj txawv txawv, thiab vim li cas qhov kev xaiv qib zoo tseem ceeb heev hauv kev xyaum.
Baoji Yibaite Tshiab Materials Technology Co., Ltd.- Cov Chaw Tsim Khoom Zoo Tshaj Plaws thiab Cov Khoom Muag ntawmCov khoom siv titanium