Mechanical zog ntawm titanium:
(1) Lub zog tensile ntawm ntshiab titanium yog 265 ~ 353MPa, muaj titanium alloy yog 686-1176mpa, thiab qhov siab tshaj plaws tam sim no yog 1764MPa. Titanium alloys piv rau lub zog rau ntau daim hlau, tab sis lub zog tshwj xeeb ntawm cov hlau tsis zoo dua li cov titanium alloys.
(2) Lub zog compressive ntawm titanium thiab titanium alloy tsis qis dua nws lub zog tensile. Lub compressive yield zog thiab tensile yield zog ntawm industrial ntshiab titanium yog roughly sib npaug, thaum lub compressive zog ntawm Ti-6AI-4V thiab Ti-5AI-2.5Sn yog me ntsis siab dua lub zog tensile.
(3) Lub zog shear feem ntau yog 60 feem pua ~ 70 feem pua ntawm lub zog tensile. Lub compressive yield zog ntawm titanium thiab titanium alloy daim ntawv yog hais txog 1.2 ~ 2.0 npaug ntawm lub zog tensile.
(4) Nyob rau hauv ib puag ncig ib puag ncig, qhov kev txwv tsis pub dhau ntawm cov txheej txheem ua tiav thiab annealed titanium thiab titanium alloys yog 0.5 ~ 0.65 tensile lub zog. Qhov kev txwv tsis pub dhau ntawm annealed TI-6AI-4V yog 0.2 npaug ntawm lub zog tensile ntawm 10 lab qhov kev sim qaug zog hauv lub xeev notch (Kt{10}}.9).
(5) Lub hardness ntawm lub siab tshaj plaws purity ntawm industrial ntshiab titanium feem ntau yog tsawg tshaj li 120HB (Brinell hardness), thiab hardness ntawm lwm yam kev lag luam ntshiab titanium yog 200 ~ 295HB. Lub hardness ntawm ntshiab titanium casting yog 200 ~ 220HB. Lub hardness ntawm titanium alloy nyob rau hauv lub xeev annealing yog 32 ~ 38HRC (Rockwell), sib npaug rau 298 ~ 349HB. Lub hardness ntawm as-cam khwb cia Ti-5Al-2.5Sn thiab Ti-6AI-4V yog 320HB, thiab cov uas tsis muaj clearance impurity Ti-6 Al{19}}V yog 310HB.
(6) Lub tensile elastic modulus ntawm industrial ntshiab titanium yog 105 ~ 109GPa. Lub tensile elastic modulus ntawm feem ntau titanium alloys nyob rau hauv lub xeev annealing yog 110 ~ 120GPa. Lub tensile modulus ntawm cov laus hardened titanium alloy yog me ntsis siab dua li ntawm annealed titanium alloy, thiab lub compressive modulus yog sib npaug los yog ntau tshaj lub tensile modulus. Qhov tshwj xeeb elastic modulus ntawm titanium alloy yog sib npaug ntawm aluminium alloy, tsuas yog thib ob rau beryllium, molybdenum, thiab qee cov superalloys.
(7) Lub torsion los yog shear modulus ntawm industrial ntshiab titanium yog 46GPa, thiab shear modulus ntawm titanium alloy yog 43 ~ 51GPa. Txhawm rau txhim kho lub zog ntawm titanium alloy, nce cov ntsiab lus ntawm interstitial khoom yuav muaj teeb meem cuam tshuam rau kev cuam tshuam thiab tawg toughness ntawm alloy. Raws li hom thiab lub xeev ntawm titanium alloy, lub Xia notch cuam tshuam lub zog tus nqi ntawm denatured muaj ntshiab titanium yog 15 ~ 54J / ㎡, thiab lub xeev casting yog li 4 ~ 10J / ㎡. Qhov cuam tshuam lub zog ntawm titanium alloy nyob rau hauv lub xeev annealing yog 13 ~ 25.8j / ㎡, thiab lub xeev laus yog me ntsis qis. Lub v-notch cuam tshuam lub zog ntawm Ti-5AI-2.5Sn hauv lub xeev casting yog 10J/㎡, thiab ntawm Ti-6AI-4V yog {{18 }}J /㎡. Qhov qis dua cov ntsiab lus ntawm cov titanium alloy, tus nqi siab dua.
(8) Ntau cov titanium alloys muaj kev puas tsuaj loj heev, lossis muaj peev xwm ntawm titanium alloys los tiv thaiv kev tawg yog qhov zoo heev. Ti-6ai-4v nyob rau hauv lub xeev annealed yog ib yam khoom zoo heev toughness. Thaum qhov ntsuas qhov sib npaug ntawm qhov sib npaug Kt =25.4 hli, qhov sib piv ntawm lub zog tensile rau qhov tsis muaj qhov tensile lub zog yog ntau dua 1.
(9) Titanium alloy tuaj yeem tswj tau qee yam kev ua haujlwm ntawm qhov kub thiab txias. Kev lag luam dav dav titanium alloy tuaj yeem tswj hwm nws qhov kev ua tau zoo ntawm 540 degree, tab sis tsuas yog siv tau rau lub sijhawm luv luv, qhov ntev txaus kub yog 450 ~ 480 degree. Titanium alloys tau tsim los siv rau ntawm 600 degree. Raws li cov khoom siv foob pob hluav taws, titanium alloy tuaj yeem siv tau ntawm 540 degree rau lub sijhawm ntev thiab 760 degree rau lub sijhawm luv.
(10) Titanium thiab titanium alloys tuaj yeem khaws lawv cov khoom qub qub ntawm qhov kub thiab txias. Raws li qhov kub thiab txias, lub zog ntawm titanium thiab titanium alloys nce, thaum lub ductility maj mam txo. Ntau cov annealed titanium alloys muaj txaus ductility thiab tawg toughness ntawm -195.5 degree . Ti-5ai-2.5sn nrog cov ntsiab lus qis qis qis tuaj yeem siv tau ntawm -252.7 degree . Qhov piv ntawm notched tensile lub zog rau non-notched tensile zog yog 0.95 ~ 1.15 ntawm -25.7 degree .
(11) Cov pa oxygen ua kua, kua hydrogen, thiab kua fluorine yog cov khoom tseem ceeb hauv cov cuaj luaj thiab cov khoom siv hauv qhov chaw. Cov khoom uas tsis tshua muaj kub ntawm cov ntaub ntawv siv los ua cov hlab ntsha cryogenic thiab cov qauv cryogenic yog qhov tseem ceeb heev. Thaum lub microstructure yog equiaxed thiab cov ntsiab lus ntawm interstitial ntsiab (oxygen, helium, hydrogen, thiab lwm yam) yog ntiav, titanium alloy qhov ductility tseem qis dua 5 feem pua. Feem ntau cov titanium alloys tsis zoo ductility ntawm -252.7 degree, thaum lub elongation ntawm Ti-6AI-4V mus txog 12 feem pua.
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
