Titanium thiab Titanium Alloys
Titaniumyog ib qho tseem ceeb ntawm cov hlau uas muaj atomic tooj 22 nyob rau hauv lub sij hawm lub sij hawm (4th lub sij hawm, pab pawg neeg VB), muaj ib tug silvery -white metallic luster, ib tug ceev ntawm 4.507g / cm³, ib tug melting point ntawm 1660 degree, thiab ib tug boiling point ntawm 3287 degree. Nws muaj ntau yam khoom zoo nrog rau qhov siab melting point, tsawg ntom, siab zog, thiab zoo ductility, ua rau nws yog ib qho tseem ceeb ntawm cov khoom siv.
Titanium alloysyog hom tshiab ntawm alloys npaj raws li titanium, nrog rau qhov sib ntxiv ntawm ib lossis ntau lwm yam khoom. Titanium yog qhov muaj zog heev, thiab nws tuaj yeem cuam tshuam nrog feem ntau cov ntsiab lus los tsim cov kev daws teeb meem txuas ntxiv, txwv cov kev daws teeb meem, cov khoom siv hlau, covalent compounds, thiab ionic compounds. Alloying cov ntsiab lus tuaj yeem ua kom zoo dua cov khoom ntawm titanium los ntawm kev hloov nws cov ntsiab lus hloov pauv polymorphic thiab cov txheej txheem theem.
Titaniummuaj ob lub allotropes, uas yog lub -theem thiab lub -theem, nrog rau ib tug polymorphic transformation point ntawm txog 882℃. Thaum qhov kub thiab txias qis dua qhov hloov pauv, titanium muaj hexagonal kaw- cov qauv ntim, hu ua ( -Ti); Thaum qhov kub siab tshaj qhov kev hloov pauv kub, titanium muaj lub cev -centered cubic qauv, hu ua titanium ( -Ti).
Cov qauv sib txawv ntawm Titanium Alloys
Titanium alloysmuaj ob theem pib, -theem thiab -theem, thiab cov khoom ntawm titanium alloys feem ntau nyob ntawm cov khoom ntawm -theem thiab -theem lawv tus kheej, nrog rau lawv cov morphology, qhov loj me, kev faib tawm, thiab kev faib ua feem hauv cov alloy. Lub zog ntawm -theem yog siab dua li ntawm -theem, thiab nws muaj ntau lub hauv pliaj, ua rau nws yooj yim dua rau cov yas deformation. Siab -lub zog titanium alloys feem ntau yog nyob ntawm -theem. Lub tshav kub tsis kam thiab nkag siab tsis kam ntawm -theem yog zoo dua li cov ntawm -theem, thiab siab - kub titanium alloys feem ntau yog - alloys thiab ze - alloys.
Cov txheej txheem microstructure ntawm titanium alloys yog tsim los ntawm -Ti-raws li -solid solutions thiab -Ti-raws li -solid solutions. Lub matrix ntawm -alloys, ze - alloys, thiab ntau + alloys yog -solid tov, thaum lub matrix ntawm -alloys yog lub -theem. Lub microstructure ntawm titanium alloys feem ntau yog nyob ntawm cov alloy muaj pes tsawg leeg, deformation txheej txheem, thiab kev kho cua sov, nrog rau cov qauv yog lamellar (Widmanstätten) qauv, basketweave qauv, equiaxed qauv, thiab duplex qauv.
