Titanium alloy
Titanium yog ib yam tshiab ntawm cov hlau, kev ua tau zoo ntawm titanium thiab muaj cov pa roj carbon, nitrogen, hydrogen, oxygen, thiab lwm yam impurities muaj feem xyuam rau purity ntawm titanium iodide impurity cov ntsiab lus tsis ntau tshaj 0.1 feem pua, tab sis nws tsis muaj zog. , thiab siab plasticity. Kev ua tau zoo ntawm 99.5 feem pua kev lag luam ntshiab titanium yog: ntom ρ=4.5g / cm3, melting point 172 si-ti alloy hnav-tiv hauv pem teb 5 degree thermal conductivity λ=15.24W/(mK), tensile lub zog σb=539MPa, elongation δ= 25 feem pua, cheeb tsam txo ψ= 25 feem pua, elastic modulus E=1.078 × 105MPa, hardness HB195.
Kev ua tau zoo ntawm titanium alloy
(1) siab zog
Qhov ceev ntawm titanium alloy feem ntau yog li 4.5g / cm3, tsuas yog 60 feem pua ntawm cov hlau, lub zog ntawm titanium ntshiab yog ze rau lub zog ntawm cov hlau zoo tib yam, thiab qee qhov muaj zog titanium alloy siab tshaj lub zog ntawm ntau cov hlau alloy steel. Yog li ntawd, lub zog tshwj xeeb ntawm titanium alloy (lub zog / ntom) yog ntau dua li lwm cov khoom siv hlau thiab tuaj yeem tsim lub zog siab, zoo rigidity, thiab lub teeb lub teeb. Tam sim no, titanium alloy yog siv rau cov khoom siv cav, pob txha, tawv nqaij, fasteners, thiab tsaws iav.
(2) Siab thermal zog
Kev siv kub yog ob peb puas degrees siab dua aluminium alloy, ntawm qhov kub nruab nrab tseem tuaj yeem tuav lub zog uas yuav tsum tau ua thiab tuaj yeem ua haujlwm hauv 450-500 degree kub rau lub sijhawm ntev ob hom titanium alloy hauv 150 degree - 500 degree ntau yam tseem muaj lub zog tshwj xeeb, thiab aluminium alloy ntawm 150 degree dua li lub zog poob qis. Kev ua haujlwm kub ntawm titanium alloy tuaj yeem ncav cuag 500 degree, thiab cov aluminium alloy yog qis dua 200 degree.
(3) Zoo corrosion kuj
Kev tiv thaiv corrosion ntawm titanium alloy yog zoo dua li ntawm cov hlau tsis muaj steel thaum ua haujlwm nyob rau hauv qhov chaw ntub dej thiab dej hiav txwv nruab nrab. Kev tiv thaiv pitting corrosion, acid corrosion, thiab kev ntxhov siab corrosion yog tshwj xeeb tshaj yog muaj zog; Zoo corrosion kuj rau alkali, chloride, chlorine organic khoom, nitric acid, sulfuric acid, thiab hais txog. Tab sis titanium muaj qhov tsis zoo corrosion los txo cov pa oxygen thiab chromite nruab nrab.
(4) Kev ua haujlwm kub tsis zoo
Titanium alloy tuaj yeem khaws nws cov khoom siv kho tshuab ntawm qhov kub thiab txias ultra-tsawg. Titanium alloys nrog cov ntsiab lus qis heev thiab qhov ua tau zoo ntawm qhov kub thiab txias, xws li TA7, tuaj yeem tswj tau qee yam yas ntawm -253 degree . Yog li ntawd, titanium alloy tseem yog ib qho tseem ceeb ntawm cov khoom siv hluav taws xob qis.
(5) Kev ua tshuaj lom neeg
Titanium muaj cov tshuaj ua haujlwm siab thiab muaj cov tshuaj tiv thaiv zoo nrog O, N, H, CO, CO2, dej vapor, thiab ammonia hauv huab cua. Thaum cov ntsiab lus carbon ntau dua 0.2 feem pua, TiC nyuaj yuav tsim nyob rau hauv titanium alloy. Thaum qhov kub thiab txias siab dua, TiN txheej txheej tawv tawv tuaj yeem tsim los ntawm kev sib cuam tshuam nrog N. Saum toj no 600 degree, titanium absorbs oxygen los ua ib txheej tawv tawv nrog siab hardness. Thaum cov ntsiab lus hydrogen nce, ib txheej embrittlement kuj yuav raug tsim. Qhov tob ntawm qhov tawv tawv tawv uas tsim los ntawm kev nqus cov pa tuaj yeem ncav cuag 0.1-0.15mm, thiab hardening degree yog 20 feem pua -30 feem pua. Titanium tshuaj affinity kuj yog ib qho tseem ceeb, yooj yim rau kev sib txhuam nto adhesion tshwm sim.
(6) Me me thermal conductivity, me me elastic modulus
Lub thermal conductivity ntawm titanium λ=15.24W / (mK) titanium alloy cov khoom yog hais txog 1/4 ntawm nickel, 1/5 ntawm hlau, 1/14 ntawm txhuas, thiab thermal conductivity ntawm ntau yam titanium alloys tshaj titanium poob li ntawm 50 feem pua. Lub elastic modulus ntawm titanium alloy yog hais txog 1/2 ntawm cov hlau, yog li nws rigidity tsis zoo, yooj yim deformation, yuav tsum tsis txhob ua slender pas nrig thiab nyias-walled qhov chaw, txiav cov txheej txheem ntawm lub caij nplooj ntoos hlav rov qab yog loj heev, txog {{12. }} zaug ntawm cov hlau tsis muaj steel, ua rau muaj kev sib txhuam hnyav, adhesion, adhesion hnav ntawm cov cuab yeej nto.
Hu rau:
Yog tias koj muaj lus nug, thov koj xav tiv tauj peb. Cov sijhawm ua haujlwm: 8:30 teev sawv ntxov txog 17:30 teev tsaus ntuj
E-mail:zhangjixia@bjygti.com
