Khoom Description
Lub nickel-titanium alloy bar yog binary alloy pas nrig uas muaj cov nickel thiab titanium. Qhov kev faib ua feem ntawm ob lub ntsiab lus yog kwv yees li 50 atomic feem pua (qhov hnyav ntawm npib tsib xee yog li 55 feem pua). Txawm li cas los xij, qhov kev hloov kho zoo ntawm ob lub ntsiab lus tuaj yeem ua rau kev ua haujlwm ntawm NiTi alloy sib txawv heev, tshwj xeeb tshaj yog nws qhov kev hloov pauv kub, uas yog, qhov kub ntawm cov qauv siv lead ua ntawm cov hlau hloov pauv ntawm austenite mus rau martensite los yog vice versa. Yog tias cov ntsiab lus npib tsib xee tshaj 50/50, qhov kev hloov pauv kub yuav poob qis thiab lub zog ntawm austenite yuav nce ntxiv.
Yog tias qhov sib piv Ni-Ti nce mus rau 51/49, qhov kev hloov pauv kub yuav txo qis dua 100 ° C. Qhov rhiab heev ntawm cov cuab yeej no kom nce me ntsis hauv feem pua ntawm cov npib tsib xee ua rau nws nyuaj rau kev tsim Nitinol nrog cov khoom sib xws thiab rov ua dua. . Txawm li cas los xij, tib lub sijhawm, qhov no muab cov tuam txhab tsim muaj txoj hauv kev los tswj kev ua tau zoo thiab tsim cov ingots nrog qhov kev hloov pauv uas yuav tsum tau ua.
Vim qhov kev hloov pauv ntawm qhov kub thiab txias, muaj ob theem sib txawv ntawm cov qauv siv lead ua, uas yog theem austenite thiab theem martensite.
Theem transformation sequence of Ni-Ti alloy thaum txias yog theem niam txiv (austenite theem) - R theem - martensite theem. R-theem yog rhombohedral, thiab austenite nyob rau hauv lub xeev thaum qhov kub thiab txias (ntau tshaj qhov qub: qhov kub ntawm lub austenite pib) lossis thaum lub load raug tshem tawm (sab nraud quab yuam raug tshem tawm los ntawm kev ua kom muaj zog), cubic thiab nyuaj. Cov duab yog qhov ruaj khov. Lub sijhawm martensite yog nyob rau hauv lub xeev thaum qhov kub thiab txias (tsawg dua Mf: qhov kub ntawm lub martensite xaus) los yog loaded (activated los ntawm ib tug sab nraud quab yuam). Nws yog hexagonal, ductile, rov ua dua, tsis ruaj khov, thiab yooj yim rau deform.
Superelastic NiTi alloys siv kev ntxhov siab vim kev hloov pauv martensitic kom ua tiav qhov yooj yim txaus ntseeg thiab tiv thaiv kinking. Piv txwv li, alloys tsim kom muaj hyperelasticity nyob rau hauv chav tsev kub yog feem ntau ua nyob rau hauv ib tug kub ntawm ib tug me ntsis qis dua chav tsev kub, xws li 0 mus rau 20 ° C. Cov khoom no kuj yuav pom zoo hyperelasticity ntawm lub cev kub (37 ° C. ). Lub superelastic alloy yog qhov loj tshaj plaws ntawm cov khoom siv Nitinol.
Cov duab nco NiTi alloy siv lub peev xwm ntawm cov khoom siv kom rov qab tau cov kev cob qhia zoo thaum nws tau rhuab saum nws qhov kev hloov pauv kub. Yog li ntawd, cov yam ntxwv tseem ceeb tshaj plaws yuav tsum tau teev tseg yog qhov hloov pauv kub. Active Af qhia txog kev ua tiav ntawm kev hloov pauv ntawm martensite mus rau austenite thaum lub sij hawm cua sov, yog li nws qhia txog qhov kub thiab txias ntawm cov duab rov qab ua tiav.
Cov khoom parameter
| Qib | Niti alloy bar Dia/mm | Ntev / mm | Nto | suav los ntawm |
| Hlau alloy | 8.0 | Random | Ci ntsa iab | M / kg |
| Hlau alloy | 10.0 | Random | Ci ntsa iab | M / kg |
| Hlau alloy | 12.0 | Random | Ci ntsa iab | M / kg |
| Hlau alloy | 14.0 | Random | Ci ntsa iab | M / kg |
Khoom duab
Peb lub Hoobkas
rhiav
rhiav
rhiav
rhiav
Cim npe nrov: nickel titanium alloy bar, Tuam Tshoj, lwm tus neeg, manufacturers, hoobkas, customized, lag luam wholesale, bulk, luv nqi, kev muag, Tshuag, yuav luv nqi, ua nyob rau hauv Suav teb
