Titanium-aluminium alloys: Txhim khu kev txhim kho lub peev xwm thauj khoom ntawm aero-engines

Lub cav dav hlau hu ua lub plawv ntawm lub dav hlau, lub luag haujlwm rau lub zog hloov pauv ntawm lub dav hlau. Qhov kub tsis kam ntawm cov hniav yog qhov tseem ceeb hauv kev txiav txim siab kev ua haujlwm ntawm lub cav. Txhawm rau txo qhov sib txawv ntawm Tuam Tshoj thiab cov teb chaws tsim kho nyob hauv Europe thiab Asmeskas, Tuam Tshoj tau teev cov tshuab aero thiab roj turbines ua cov haujlwm tshawb fawb thiab thev naus laus zis loj, thiab nyob rau lub Peb Hlis 2016 tau teeb tsa "China Aviation Engine Group Co.

Lub Rau Hli 21, 2016, Nanjing University of Science thiab Technology tau tuav lub rooj sib tham xov xwm, lub tsev kawm ntawv Chen Guang, tus kws tshaj lij pab pawg tsim cov titanium aluminium alloy tshiab ua haujlwm kub tuaj yeem ncav cuag 900 degree, tiv taus qhov kub siab ntawm -250 degree lossis ntau dua. lub peev xwm los txhim kho cov tseem ceeb ntawm lub cav qhov chaw thiab cov khoom ntawm ntau tshaj 150. Lub rau hli ntuj 20, 2016, lub ntiaj teb sab saum toj phau ntawv journal, "Nature Materials" luam tawm online nws cov txiaj ntsig cuam tshuam.

Lub rooj sib tham cov kws tshaj lij, Tuam Tshoj tus aviation cav hniav hniav tseem ceeb cov ntaub ntawv yog npib tsib xee-raws li alloys, kub tsis kam ntawm 650 degree C - 750 degree C, ib zaug qhov kub siab dua, cov khoom yuav "ceep", maj mam deformation. Piv nrog npib tsib xee-raws li alloys, titanium-aluminium alloy tsis tsuas yog muaj nws tus kheej zoo xws li me me, tab sis kuj muaj lub zog siab, siab plasticity.

Nws tau nkag siab tias Nanjing University of Science thiab Technology Cov Khoom Ntsuas Kev Ntsuas thiab Engineering Tsim Kev Kawm thiab Kev Tshawb Fawb Center, xibfwb Chen Guang pab nyiaj los ntawm National 973 Program, tsim ib tug tswv cuab tshiab ntawm "titanium-aluminium alloy tsev neeg polymerization rau hauv ib lub pob zeb siv lead ua titanium. -aluminium ib leeg siv lead ua" (PST titanium-aluminium ib leeg siv lead ua), tsis tsuas yog lub zog thiab plasticity tau zoo heev, muaj peev xwm tiv taus qhov kub thiab txias mus txog ntau dua 900 degree.

Cov kws tshaj lij, Asmeskas GE tau tsim lub npe code "4822", 650 degree C - 750 degree C siab kub resistant titanium-aluminium alloy, es tsis txhob nickel-raws li high-temperature alloys, tsuas yog ua los ntawm ob lub xeem qis- Lub siab turbine hniav ntawm qee lub cav, lub cav qhov hnyav ntawm kwv yees li 200 phaus, roj txo 20%, nitrogen oxide emissions txo los ntawm 80%, lub suab nrov txo, siv hauv Boeing 787 neeg nrog caij dav hlau, Boeing 787 neeg nrog caij dav hlau. . Txo, siv nyob rau hauv Boeing 787 airliner, ua tiav kev sim davhlau nyob rau hauv 2007, 2009 officially muab tso rau hauv kev lag luam lag luam, nyob rau hauv lub tshav pob ntawm aviation thiab cov ntaub ntawv xav. Thaum cov khoom siv no siv rau cov hniav ntawm tag nrho lub cav, cov nyhuv ntawm qhov hnyav, txo suab nrov thiab txuag roj rau lub dav hlau lub cav yuav tseem ceeb dua.

Cov kauj ruam tom ntej ntawm Nanjing Science thiab Technology yuav ua kom tiav qhov kev ntsuas kev ua tau zoo ntawm cov hlau no sai li sai tau, thiab siv tiag tiag rau kev tsim khoom ntawm Suav aviation cav hniav.