Lub Ti-45Nb titanium alloy belongs rau metastable - hom titanium alloy. Nyob rau hauv lub xeev cov tshuaj, nws muaj zoo heev txias dov thiab txias forming peev xwm. Qhov txias dov deformation tus nqi tuaj yeem ncav cuag ntau dua 90%, ua rau nws yooj yim tsim ntau yam- zoo li daim ntawv hlau qhov chaw, xws li kev tiv thaiv parachute thav ntawv, thiab lwm yam. Tsis tas li ntawd, nws tseem tuaj yeem siv rau kev tsim cov khoom fastening xws li lub taub hau txias rivets thiab bolts. Piv nrog rau cov tsoos + - hom titanium alloys (xws li GR5), qhov kev ua haujlwm txias ntawm Ti-45Nb titanium alloy yog qhov zoo dua. Thaum lub sij hawm ua, nws tuaj yeem ua tiav siab -kev ua tiav yam tsis muaj qhov nruab nrab annealing, ua kom yooj yim rau cov txheej txheem tsim khoom thiab txhim kho kev tsim khoom. Qhov no tsis tsuas yog txo cov nqi tsim khoom tab sis kuj ua kom zoo thiab ua haujlwm ruaj khov ntawm cov khoom, ua tau raws li cov kev cai nruj ntawm kev lag luam aerospace rau cov khoom zoo thiab cov khoom zoo.
Thaum lub sijhawm ua haujlwm ntawm cov cuab yeej siv dav hlau, lawv feem ntau ntsib cov teeb meem xws li kub siab thiab hnyav corrosive ib puag ncig. Ti-45Nb titanium alloy ua tau zoo tshwj xeeb hauv qhov no, tswj kev ruaj ntseg zoo txawm tias qhov kub ntawm 300 txog 600 degrees Celsius. Nws yog qhov tsim nyog rau kev tsim cov thermal kawg Cheebtsam ntawm aircraft xyaw. Cov khoom no raug rau qhov kub thiab txias, siab siab, thiab siab -ceev airflow thaum lub cav ua haujlwm, thiab muaj cov kev xav tau siab heev rau cov khoom siv. Lub siab kub ruaj khov ntawm Ti-45Nb titanium alloy ua kom ntseeg tau tias lub cav ua haujlwm nyob rau hauv cov xwm txheej huab cua no, txhim kho kev ua haujlwm thiab lub neej ntev ntawm lub cav. Tsis tas li ntawd, cov yeeb yaj kiab oxide nto ntawm Ti-45Nb titanium alloy muaj kev tiv thaiv corrosion zoo heev, muaj peev xwm tiv taus kev yaig los ntawm dej hiav txwv, chloride, thiab lwm yam corrosive ib puag ncig. Cov yam ntxwv no ua rau nws haum rau cov neeg nqa dav hlau thiab ntau yam khoom siv dav hlau ua haujlwm hauv marine ib puag ncig. Nyob rau hauv ib puag ncig marine, cov cuab yeej siv tau yooj yim rau corrosion vim yog yam xws li ntsev pos huab thiab av noo. Kev siv Ti-45Nb titanium alloy tuaj yeem ua kom ntev lub neej kev pabcuam ntawm cov khoom siv thiab txo cov nqi tu.
1. txheej txheem kev kho cua sov
Lub Ti-45Nb titanium alloy, raws li ib tug raug metastable -type titanium alloy, lub hom phiaj tseem ceeb ntawm nws cov kev kho cua sov yog los tswj lub stability ntawm theem thiab nag lossis daus ntawm theem nrab, yog li optimizing lub zog, plasticity thiab elastic modulus.
Kev kho mob
Qhov kub thiab txias: 750-800℃(hauv qab ntawm theem hloov pauv kom tsis txhob muaj nplej coarsening)
Lub sij hawm cua sov: 0.5-2 teev (hloov raws li tus ntoo khaub lig-sectional thickness)
Txoj kev txias: dej quenching (WQ) los yog cua txias ceev Lub Hom Phiaj:
Dissolve cov theem tsim thaum lub sij hawm ua thiab tau ib tug oversaturated metastable theem qauv;
Khaws cov nyhuv hardening los muab lub hauv paus rau kev laus tom ntej los nag.
Kev kho mob laus
Qhov kub thiab txias: 400-550℃(feem ntau 450-500 degree)
Lub sijhawm cua sov: 4-24 teev (lub sijhawm ↑ → lub zog ↑, plasticity ↓)
Txoj kev txias: cua txias (AC)
Mechanism:
Txhawb cov nag lossis daus ntawm cov theem zoo nyob rau theem metastable, ua kom muaj zog ntxiv (lub zog tensile tuaj yeem ncav cuag 1000-1300 MPa);
Over-aging (>550 degree) yuav ua rau coarsening ntawm theem, txo qhov kev ua tau zoo tag nrho.
Kev ntxhov siab
Qhov kub thiab txias: 480-600℃(hauv qab qhov kub kub kom tsis txhob softening)
Lub sij hawm cua sov: 1-4 teev Cov xwm txheej:
Tom qab ua haujlwm txias (xws li txias dov, kos duab) lossis vuam, seemkev ntxhov siab raug tshem tawm;
Yog tsis muaj kev hloov pauv tseem ceeb, cov kev daws teeb meem hauv lub xeev (xws li rau kev kho mob stents, tswj qhov qis elastic modulus) tau khaws cia.
Kev daws
Yog tias koj xav tau qhov sib npaug ntawm lub zog thiab biocompatibility ntawm Ti-45Nb (xws li rau cov pob txha cog), ua ntej 480℃kev ntxhov siab-relieving annealing. Yog tias koj tsom rau lub zog siab ntawm cov qauv tsim (xws li aerospace fasteners), siv qhov sib xyaw ua ke ntawm 800℃× 1h / WQ + 500℃× 8h / AC.
Koj puas xav kom peb lub tuam txhab hloov kho cov kev kho cua sov los yog pom zoo cov cuab yeej tiv thaiv kev daws teeb meem rau koj qhov kev thov tshwj xeeb (xws li kev kho mob / aerospace / elastomer Cheebtsam)? Koj tuaj yeem tiv tauj peb kom tau txais daim ntawv teev npe txheej txheem + cov lus teev tseg.
Qhov zoo ntawm daim ntawv thov nyob rau hauv ntau yam aerospace teb:
Hauv thaj chaw ntawm cov khoom siv, Ti-45Nb titanium alloy plays lub luag haujlwm tseem ceeb hauv kev tsim cov khoom xws li cov fuselage thav duab thiab tis tis. Nws tuaj yeem hloov cov khoom siv hlau thiab ua tiav qhov hnyav ntawm ntau dua 40%. Lub teeb fuselage qauv tsis tsuas yog txhim kho lub davhlau kev ua tau zoo ntawm lub dav hlau tab sis kuj txo qhov kev pheej hmoo ntawm kev qaug zog ntawm cov qauv, yog li txhim kho kev nyab xeeb thiab kev ntseeg siab ntawm lub dav hlau. Nyob rau hauv lub tshav pob ntawm fastening Cheebtsam, txias taub hau tsim rivets thiab bolts yog feem ntau siv fasteners nyob rau hauv lub aerospace kev lag luam. Cov fasteners no ua los ntawm Ti-45Nb titanium alloy muaj lub zog siab thiab qaug zog, ua tau raws li qhov yuav tsum tau siv ntawm lub dav hlau nyob rau hauv txoj kev nyuaj siab. Piv txwv li, Ti-45Nb titanium alloy fasteners yog dav siv nyob rau hauv advanced aircraft xws li bombers thiab Boeing neeg nrog caij dav hlau, muab ib tug muaj zog guarantee rau cov qauv kev ruaj ntseg ntawm lub aircraft. Nyob rau hauv lub engine tivthaiv teb, lub aerospace engine yog "lub plawv" ntawm lub aircraft, thiab nws cov kev ua tau ncaj qha txiav txim siab lub peev xwm ntawm lub aircraft. Ti-45Nb titanium alloy tuaj yeem siv los tsim cov cav tseem ceeb xws li compressor hniav thiab turbine discs. Nws txoj kev siv tuaj yeem ua rau muaj qhov sib zog-rau-qhov hnyav ntawm lub cav, ua rau nws tsim kom muaj zog ntau dua nrog tib qhov hnyav. Nyob rau tib lub sijhawm, nyob rau hauv cov xwm txheej tsis zoo, Ti-45Nb titanium alloy tuaj yeem tswj kev ua haujlwm ruaj khov, txhim kho kev ntseeg siab ntawm lub cav, thiab txo qhov tshwm sim ntawm kev ua tsis tiav. Hauv thaj chaw satellite tivthaiv, kev tsim lub teeb pom kev zoo yog qhov tseem ceeb rau kev nce lub payload ntawm satellites thiab txo cov nqi xa tawm. Ti-45Nb titanium alloy tuaj yeem siv los tsim cov khoom xws li corrugated daim hlau thiab kev txhawb nqa cones ntawm satellites, thiab lub teeb yuag tsim tuaj yeem ua tiav los ntawm cov txheej txheem xws li tshuab molding. Qhov no tsis tsuas yog txo qhov hnyav ntawm lub satellite xwb tab sis kuj muab qhov chaw rau nqa ntau cov cuab yeej siv txuj ci thiab khoom siv, nthuav dav cov haujlwm thiab daim ntawv thov ntawm lub satellite.
Cim npe nrov: Tuam Tshoj ti-45nb titanium alloy manufacturers, lwm tus neeg, Hoobkas
