TA7 titanium alloy (Ti-5Al-}2.5Sn) muaj qhov zoo heev -kub stability thiab zoo heev qis- kub toughness. Nws tuav nws lub zog txawm tias tom qab ua haujlwm ntev ntawm 500℃thiab khaws nws cov yas ntawm qhov kub thiab txias li -253 degree. Nrog rau sab saum toj-tier weldability thiab muaj zog corrosion kuj, nws yog ib qho khoom siv zoo tshaj plaws rau kev siv aerospace, cov thawv cryogenic, thiab cov qauv hauv hiav txwv.
TA7 titanium yog dab tsi?
TA7 titanium alloy (internationally hu ua Ti-5Al-2.5Sn) yog nruab nrab-lub zog -hom ib zaug-theem titanium alloy tau txhais nyob rau hauv Suav teb chaws tus qauv GB/T 3620.1. Los ntawm cov khoom- kev daws teeb meem los ntawm txhuas (Al) thiab tin (Sn), nws ua tiav qhov sib npaug ntawm qhov zoo heev - qhov kub thiab txias stability, superior low-temperature toughness, zoo weldability, thiab zoo creep resistance, thaum tuav lub cev nyhav thiab corrosion-resistant zoo ntawm titanium alloys. Cov hlau no yog ib qho kev xaiv zoo tshaj plaws rau kev siv dav hlau, nkoj tsim, khoom siv tshuaj lom neeg, thiab cov khoom siv tseem ceeb hauv qhov kub thiab txias.
Txhawm rau muab cov ntsiab lus nrawm ntawm nws cov yam ntxwv tseem ceeb, cov lus hauv qab no qhia txog nws cov ntaub ntawv tseem ceeb.
| Yam ntxwv Dimension | TA7 (Ti-5Al-2.5Sn) Titanium Alloy |
|---|---|
| Hom khoom | -hom Ib leeg-Phase Titanium Alloy |
| Suav Tsim | TSI 7 |
| Nominal Composition | Ti-5Al-2.5Sn |
| Cov qauv siv tau | GB / T 3620.1 (Composition), GB / T 3621 (Plate), GB / T 2965 (Bar) |
| Qhov ntom | 4.42 g / cm³ |
| Tensile zog (Rm) | Ntau tshaj los yog sib npaug rau 785 MPa (Annealed xeev, chav tsev kub) |
| Yield zog (Rp0.2) | Cov ntaub ntawv tsis muab ncaj qha (Hloov tus nqi ~ 760 MPa) |
| Elongation (A) | Ntau dua lossis sib npaug li 10% (Annealed xeev, chav tsev kub) |
| Hardness | HB 277-286 |
| Elastic Modulus | 113 GPA |
| Qhov Kev Pab Cuam Siab Tshaj Plaws | 500℃(ntev-lub sijhawm), 800-850℃(Short-term) |
| Cov yam ntxwv tseem ceeb | Zoo heev - kub stability, Tsis tshua muaj siab - kub toughness, Superior weldability, Zoo corrosion kuj |
| Thawj daim ntawv thov teb | Aerospace cav Cheebtsam, Cryogenic siab hlab ntsha, tshuaj cov khoom, Marine lug |
Tshuaj muaj pes tsawg leeg
Cov khoom tshwj xeeb ntawm TA7 alloy qia los ntawm nws qhov yooj yim tsis tau meej alloy tsim. Nws cov tshuaj muaj pes tsawg leeg yog raws li nram no (mass feem pua, wt%):
Aluminium (Al): 4.0 - 6.0% → Primary -stabilizing caij, nce lub zog, thermal zog, thiab elastic modulus.
Tin (Sn): 2.0 - 3.0% → Cov khoom nruab nrab, cov khoom siv - kev daws teeb meem ntxiv dag zog rau -theem, txhim kho thermal zog, nrog rau cov nyhuv tsawg dua ntawm plasticity.
Titanium (Ti): Sib npaug
Cov ntsiab lus impurity: Xws li hlau (Fe) Tsawg dua lossis sib npaug li 0.50%, carbon (C) Tsawg dua lossis sib npaug li 0.08%, nitrogen (N) Tsawg dua lossis sib npaug li 0.05%, oxygen (O) Tsawg dua lossis sib npaug li 0.20%, hydrogen (H) Tsawg dua lossis sib npaug li 0.015%, yog nruj me ntsis tswj kom ntseeg tau tias cov khoom siv hluav taws xob tsis zoo, kev ruaj ntseg thiab cov roj.
Mechanical Properties
TA7 alloy feem ntau yog siv nyob rau hauv lub xeev annealed. Nws cov chav zoo li -kub txhua yam khoom yog:
Tensile zog (Rm): Ntau dua lossis sib npaug rau 785 MPa (tuaj yeem ncav cuag 860 MPa)
Yield zog (Rp0.2): Cov ntaub ntawv tsis yog muab ncaj qha (Hloov tus nqi ~ 760 MPa)
Elongation (A): Ntau dua lossis sib npaug li 10%
Kev txo qis ntawm cheeb tsam (Z): Cov ntaub ntawv tsis muab ncaj qha
Hardness: HB 277-286
Elastic Modulus: 113 GPa
Poisson tus ratio: 0.33
Nws qhov siab -kub thiab qis- qhov kub thiab txias cov cuab yeej siv tau zoo heev:
High -Tsub Ua Haujlwm: Khaws lub zog siab thiab zoo creep tsis kam ntawm 500 degree. Luv -lub sij hawm kev pabcuam kub tuaj yeem ncav cuag 800-850℃.
Tsawg-Kev Ua Haujlwm Kub: Ua kom muaj zog thiab zoo toughness (elongation Ntau dua lossis sib npaug li 12%) txawm tias nyob rau hauv ultra- qhov kub thiab txias (piv txwv li, -253℃). Nws lub zog tshwj xeeb yog kwv yees li ob zaug ntawm aluminium alloys thiab stainless hlau.
Cov yam ntxwv tseem ceeb (Qhov zoo)
Zoo heev High -Temperature Stability thiab Creep Resistance: Ua kom pom kev nkag siab zoo thiab thermal stability ntawm 500 degree, tso cai rau kev ua haujlwm ntev -lub sijhawm ntawm qhov kub no.
Tsawg kawg -Tsub Toughness: Lub TA7ELI variant, nrog cov ntsiab lus qis interstitial tsis tshua muaj, tuav lub zog siab thiab zoo plasticity txawm tias ntawm -253℃(kua hydrogen kub). Nws qhov kev hloov pauv hloov kub yog qhov tsawg heev, ua rau nws yog ib qho khoom siv zoo tshaj plaws rau kev tsim cov thawv ntim khoom cryogenic.
Superior Weldability: Ib qho ntawm cov titanium alloys nrog qhov zoo tshaj plaws weldability. Kev ntseeg tau zoo tuaj yeem ua tiav siv ntau txoj hauv kev (xws li TIG, plasma arc, electron beam). Welded pob qij txha muaj lub zog siab, nrog rau cov yas thiab qaug zog ua haujlwm ze ntawm cov hlau hauv paus, feem ntau tsis tas yuav tsum tau ua haujlwm nyuaj-weld heat treatment.
Zoo Corrosion Resistance: Inherits qhov zoo heev inherent corrosion kuj ntawm titanium alloys. Kev tiv thaiv zoo heev rau huab cua, dej hiav txwv, ntau yam tshuaj chloride, nitric acid, organic acids, thiab lwm yam, ua rau nws tshwj xeeb tshaj yog haum rau qhov hnyav marine ib puag ncig (xws li, cov khoom siv hauv nkoj) thiab kev siv tshuaj lom neeg.
Siab tshwj xeeb muaj zog: Nws lub zog-rau- qhov sib piv ntom ntom (lub zog tshwj xeeb) yog qhov siab dua li cov hlau, ua kom cov khoom hnyav dua.
Thawj daim ntawv thov teb
Aerospace: Cov khoom siv dav hlau dav hlau (compressor casings, blades, guides, combustion chamber shrouds), rocket/missile parts (engine casings, fuel/oxidizer tanks, pressure vessels), and aircraft fuselage components (firewalls, hydraulic system tubing, fasteners).
Cryogenic Engineering: Kev khaws cia thiab thauj cov ntim khoom, cov kav dej, thiab cov khoom siv valve rau cov khoom siv cryogenic xws li cov kua hydrogen, oxygen, thiab nitrogen (thawj daim ntawv thov rau TA7ELI).
Shipbuilding Kev Lag Luam: Submarine siab hull Cheebtsam, sonar domes, li qub, twj, piping systems (kev pab los ntawm nws zoo heev seawater corrosion kuj).
Chemical and Energy Industries: Corrosion-cov hlab ntsha tiv taus, reactors, kub exchangers, piping systems; qee yam khoom siv hauv kev lag luam nuclear fais fab.
Cov cuab yeej kho mob: Artificial pob qij txha, kho hniav implants (siv nws biocompatibility, raws li stricter biocompatibility txiav txim siab).
Process Performance thiab Fabrication
Kev kho cua sov: Feem ntau siv nyob rau hauv qhov mob annealed. Feem ntau annealing yuav tuav ntawm 700-850℃rau ib lub sijhawm tshwj xeeb ua raws li huab cua lossis cua sov cua txias, txhawm rau txo kev ntxhov siab thiab txhim kho microstructure.
Vuam: Weldability zoo heev. Vuam yuav tsum tau ua raws li cov roj inert txaus (xws li, argon) tiv thaiv kom nruj kom tsis txhob muaj kab mob. Ncej -weld stress relief annealing feem ntau ua.
Kub Ua Haujlwm: Kub ua haujlwm tau zoo (xws li forging, dov). Kub ua hauj lwm kub kub yog feem ntau nyob rau hauv lub + ob-theem cheeb tsam (piv txwv li, 850-900℃).
Ua haujlwm txias: Txias formability kuj txwv; complex duab feem ntau xav tau kub sib sau.
Tshuab dhos: Cov yam ntxwv ntawm kev ua haujlwm zoo ib yam li lwm cov titanium alloys, cais nws raws li qhov nyuaj dua - rau - cov khoom siv tshuab. Cov cuab yeej ntse, txiav qis qis dua, tus nqi pub ntau dua, txaus txias / lubrication yuav tsum tau ua, nrog rau kev saib xyuas los tiv thaiv kev ua haujlwm nyuaj.
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Peb lub Hoobkas
Peb lub Hoobkas tshwj xeeb hauv kev lag luam thoob ntiaj teb ntawm cov khoom siv titanium, kev tsim khoom zoo siab - cov khoom lag luam zoo xws li titanium raj, titanium tuav, titanium daim hlau, titanium xov hlau, thiab titanium strips. Lub Hoobkas tau nruab nrog thoob ntiaj teb kev tsim khoom thiab kev sim cov cuab yeej, suav nrog precision forging units, siab -ceev txias dov mills, lub tshuab nqus tsev melting furnaces, CNC spinning tshuab, nruam kos duab ntau lawm kab, thiab automated nto kho tshuab. Coupled nrog precision xeem ntsuas xws li spectrometers thiab ultrasonic flaw detectors, peb xyuas kom meej tswj tag nrho cov txheej txheem los ntawm raw cov ntaub ntawv mus rau cov khoom tiav. Peb tau cog lus los muab cov neeg siv khoom thoob ntiaj teb nrog cov khoom siv titanium uas muaj kev ua tau zoo thiab muaj ntau yam kev qhia tshwj xeeb los ntawm cov txheej txheem ruaj khov thiab txhim khu kev qha thiab kev tswj xyuas nruj, ua tau raws li cov kev xav tau ntawm siab -kawg industries xws li lub zog, tshuaj, aerospace, thiab kev kho mob.
Titanium khoom ntim khoom
Peb muab qhov tseem ceeb rau kev nyab xeeb kev thauj mus los thiab kev xa khoom zoo ntawm peb cov khoom. Tag nrho cov ntaub ntawv titanium tau ntim khoom siv nruj kev lag luam- qib kev daws teeb meem: titanium raj thiab cov tuav tau txais kev tiv thaiv- xeb, raug kaw ntom ntom nrog cov yeeb yaj kiab tsis muaj dej, thiab tom qab ntawd muab tso rau hauv cov thawv ntoo lossis hlau txuas nrog cov dej noo- cov ntaub ntawv pov thawj, nrog cov ntaub ntawv ntxiv los tiv thaiv kev sib tsoo thiab kev sib tsoo thaum lub sijhawm thauj mus los. Titanium daim hlau thiab strips yog them nrog zaj duab xis tiv thaiv, haum nrog ntug tiv thaiv, sib cais los ntawm txheej nrog ya raws - ntawv pov thawj, thauj khoom mus rau cov ntoo lossis steel pallets ruaj khov, thiab ruaj khov nrog cov hlua steel. Cov xov hlau titanium zoo zoo yog coiled mus rau qhov tshwj xeeb spools thiab encapsulated hauv cov thawv kaw uas tsis muaj dej tsis zoo thiab tsis muaj plua plav. Txhua lub ntim ntim nrog cov ntawv qhia meej cov khoom, daim ntawv pov thawj cov khoom, thiab cov dej noo- cov ntaub ntawv pov thawj, kom ntseeg tau tias cov khoom tsis zoo, muaj cov ntawv sau meej meej, thiab xa mus rau cov neeg siv khoom thoob ntiaj teb kom ruaj ntseg los ntawm kev thauj mus los hauv hiav txwv ntev thiab ntau yam.
Thov Kev Sib Tham Kev Sib Tham
