Tawm tsam keeb kwm yav dhau los ntawm kev loj hlob hauv kev lag luam titanium alloy, cov pa TC4 titanium alloy, feem ntau siv cov khoom siv hauv aerospace, zog thiab marine daim ntaub ntawv, tau ntev tau plagued los ntawm kev lag luam -wide bottleneck ntawm compromised lub zog thiab toughness: ib zaug cov ntaub ntawv raws li lub zog raws li cov kev xav tau ntawm lub zog, nws fragrance heev. Cov kev pabcuam uas muaj kev hloov pauv hloov pauv, nrawm nrawm siab - qhov kub thiab txias tsis sib haum thiab qhov chaw corrosive, txwv tsis pub siv cov khoom siv titanium nyob rau hauv siab -kawg cov cuab yeej. Tsis ntev los no, pab pawg tshawb fawb los ntawm Zhejiang University Lub Tsev Kawm Ntawv ntawm Cov Khoom Siv tau koom tes nrog cov koom haum tshawb fawb ntawm J + Kumamoto, ib lub tsev kawm ntawv qib siab. 30% kev txhim kho nyob rau hauv toughness yam tsis hloov cov tshuaj lom neeg muaj pes tsawg leeg los yog compromising thawj mechanical zog.Qhov no breakthrough tau garnered nws kim heev nyob rau hauv lub lag luam.
Lub hauv paus ntawm kev tshawb fawb txog cov khoom siv tseem ceeb, Zhejiang University tau taug qab cov kev hloov pauv ntawm cov theem thiab theem ntawm titanium alloys ntawm microscale siv qib siab hauv -situ electron microscopy thiab synchrotron radiation characterization technologies.Meanwhile, Kumamoto University tau tsom mus rau kev puas tsuaj mechanics kuaj thiab kev tshawb fawb ntawm cov kev tshawb fawb txog kev kho cua sov ntawm ob pawg kev loj hlob. Lub siab xav ntawm kev txhim kho kev ua tau zoo ntawm cov hlau zoo nkauj doping.Los ntawm cov txheej txheem thermal ua tiav, cov txheej txheem hierarchically bimodal microstructure uas muaj kev sib hloov coarse thiab nplua nplej tau tsim nyob rau hauv cov hlau matrix.Randomly staggered -theem nplej deflect crack propagation paths thiab zog dissipate ultra-zoo-grained -theem sustains tag nrho cov qauv muaj zog, ua tau zoo toughening ntawm lub microscopic theem.
Thib peb-kev xeem ntawv pov thawj ntawm cov hlau tshiab tau muab lub zog tensile sib npaug rau cov pa TC4, nrog rau 30% siab dua tawg toughness piv rau lub teb chaws tus qauv qauv.Kev txhim kho ntxiv kuj tau ua tiav hauv ductility, cryogenic toughness thiab qaug zog tiv thaiv.Feem ntau qhov tseem ceeb, kev hloov kho cov txheej txheem ntau lawm smelting, dov thiab forging, enabling loj ntau lawm ntawm incumbent khoom thiab txiav nqi manufacturing.
Rau kev lag luam xa tawm, cov khoom tsim tsim ua haujlwm tsis yog rau kev tsim cov ntawv kawg ntawm titanium nkaus xwb tab sis kuj tseem yog cov khoom nyoos rau titanium- steel clad plates.Target applications muaj xws li cov khoom siv hluav taws xob hloov hluav taws xob, cov khoom cua txias rau offshore cua fais fab thiab aerospace structural qhov chaw, txaus siab rau cov khoom siv nruj nreem xaiv manufacturers hauv domestic thiab thoob ntiaj teb kev lag luam kev lag luam. siab- cov ntaub ntawv titanium kawg thiab kev ua haujlwm ntawm cov khoom siv clad phaj.
