1, Daim ntawv thov cheeb tsam
Cov khoom siv dav dav: suav nrog cov khoom tseem ceeb- cov kabmob xws li lub ntsiab spar, tis tav tav, thiab cov kab nrib pleb. Piv txwv li, tis lub ntsiab kab teeb ntawm Boeing 787 yog ua los ntawm titanium alloy forgings, hloov cov tsoos hlau los yog txhuas alloys thiab txo qhov hnyav los ntawm 20%.
Ua ntug thiab trailing ntug: Titanium alloy yog siv los ua cov qauv kev txhawb nqa rau cov ntug slats thiab trailing ntug flaps ntawm lub tis kom tiv nrog kev qaug zog loads (xws li Airbus A350 siv Ti-6Al-4V alloy).
tis daim tawv nqaij: Qee qhov siab - cov tub rog dav hlau ceev (xws li SR-71) siv cov tawv nqaij titanium alloy los tiv thaiv cov cua kub hauv aerodynamic, tab sis cov dav hlau pej xeem tsis tshua siv vim muaj kev txwv cov nqi.
2, Lub ntsiab zoo
Lub zog tshwj xeeb: Titanium alloys (xws li Ti-6Al-4V) muaj lub zog piv rau cov hlau muaj zog siab (lub zog tensile siab tshaj 900MPa), nrog rau qhov ntom ntom tsuas yog 60% ntawm cov hlau, txhim kho roj efficiency.
Corrosion resistance: Tsis tas yuav cia siab rau saum npoo los tiv thaiv- kev kho corrosion zoo li aluminium alloy, txo tus nqi txij nkawm (Boeing 787 tis titanium Cheebtsam yog tsim kom muaj lub neej ntev ntawm 30 xyoo yam tsis hloov).
Kev qaug zog: Kev qaug zog ntawm titanium yog kwv yees li 50% ntawm nws lub zog tensile, uas zoo dua li aluminium alloy (35%) thiab haum rau tis ib puag ncig nrog lub zog siab.
3, Kev sib tw
Kev ua haujlwm nyuaj: Titanium alloy muaj cov thermal conductivity tsawg (kwv yees li 7W / m · K, tsuas yog 1/10 ntawm txhuas), thiab nws muaj qhov kub thiab txias thaum txiav, yuav tsum tau siv qis - ceev thiab cov tswv yim ua zaub mov loj. Piv txwv li, Lockheed Martin siv cryogenic machining thev naus laus zis los txhim kho lub neej ntawm cov cuab yeej.
Tus nqi tseem ceeb: Tus nqi ntawm cov khoom siv titanium yog 5-10 npaug ntawm aluminium alloy (kwv yees li $ 30 / kg rau aerospace qib Ti-6Al-4V hauv 2023), tab sis tus nqi siv cov khoom tuaj yeem nce los ntawm 10% mus rau 80% los ntawm ze li ntawm net forming technology xws li laser deposition manufacturing.
4, Cov ntaub ntawv thov tshiab tshiab
Additive Manufacturing: GE Aviation siv 3D luam titanium alloy brackets nyob rau hauv lub LEAP cav ncua kev kawm ntawv, txo qhov hnyav los ntawm 40%. Cov cuab yeej no tau maj mam siv rau cov txheej txheem tis nyuaj.
Kev sib txuas ntawm cov khoom sib txuas: Qhov sib txawv ntawm titanium thiab carbon fiber reinforced polymer (CFRP) tsuas yog 0.15V (txhuas thiab CFRP ncav cuag 0.6V), ua rau nws yog qhov kev xaiv zoo tshaj plaws rau tis hybrid qauv. Kev sib xyaw ntawm CFRP daim tawv nqaij thiab titanium alloy fasteners ntawm tis ntawm Airbus A380 zam galvanic corrosion.
5, Kev Txhim Kho Yav Tom Ntej
Kev tsim cov hlau tshiab: Beta titanium alloys xws li Ti-5553 (Ti-5Al-5Mo-5V-3Cr) muaj zog dua hardenability thiab tsim nyog rau loj tis forgings (xws li cov kev npaj rau C919 successor qauv).
Kev tsim khoom ntse: Siv cov cuab yeej digital ntxaib los ua kom zoo tshaj qhov tsim qauv ntawm cov khoom siv titanium, xws li "lifelike tis titanium skeleton" tsim los ntawm Dassault Aviation, uas tuaj yeem txo qhov hnyav los ntawm 25%.
Raws li kev txheeb cais, tus nqi ntawm titanium siv nyob rau hauv niaj hnub dav lub cev dav hlau tso nyiaj rau 8-15% ntawm cov qauv hnyav (xws li 15% rau 787), uas kwv yees li 30% yog siv rau tis systems. Nrog rau kev nce ntxiv hauv kev txo qhov hnyav thiab kev ua haujlwm ntev hauv kev lag luam aviation, daim ntawv thov feem ntawm titanium hauv tis yuav tsum loj hlob ntawm tus nqi ntawm 3-5% ib xyoos twg.
