Tsis ntev los no, ib pab neeg tshawb fawb thoob ntiaj teb suav nrog Royal Melbourne Institute of Technology thiab University of Sydney hauv Australia ua ke cov alloys thiab 3D luam ntawv txheej txheem los tsim cov titanium alloy tshiab uas muaj zog thiab tsis nkig hauv qhov nro.
Lub titanium alloy tshiab muaj kev sib xyaw ntawm ob lub titanium crystals, hu ua -titanium theem thiab -titanium theem, txhua qhov sib raug rau ib qho kev npaj atomic. Oxygen thiab hlau yog ob lub zog stabilizers thiab ntxiv dag zog rau -titanium theem thiab -titanium theem, uas muaj ntau thiab pheej yig.
Cov kws tshawb nrhiav pom tias muaj ob qhov teeb meem hauv kev tsim cov tawv tawv - titanium oxide hlau alloys los ntawm cov txheej txheem tsim khoom ib txwm muaj. Ib qho yog tias cov pa oxygen ua rau titanium nkig; Lwm qhov yog tias ntxiv cov hlau tuaj yeem ua rau muaj kev puas tsuaj loj hauv metallurgical thiab tsim cov khoom loj ntawm titanium.
Pab neeg siv laser qhia lub zog tso tawm los luam tawm cov alloys los ntawm cov hmoov hlau, txheej txheem tsim nyog rau kev tsim khoom loj thiab nyuaj. Pab neeg ua ke ua ke cov ntsiab lus tsim qauv nrog 3D txheej txheem luam ntawv tsim los txheeb xyuas cov khoom muaj zog, ductile thiab yooj yim-rau-luam alloys.
Qhov tseem ceeb ntawm kev tsav tsheb ntawm cov khoom siv no yog qhov tshwj xeeb faib ntawm oxygen thiab hlau atoms nyob rau hauv thiab nruab nrab ntawm -titanium theem thiab -titanium theem. Cov kws tshawb fawb tau tsim ib qho nanoscale oxygen gradient nyob rau hauv-titanium theem nrog lub zog siab-oxygen ntu thiab cov ductile qis-oxygen segment, uas ua rau kev tswj hwm hauv zos atomic bonds thiab txo qhov muaj peev xwm embrittlement.
Cov kws tshawb fawb tau hais tias pab pawg tau muab lub tswv yim ntawm kev lag luam ncig hauv kev tsim, tsim kev cia siab rau kev tsim cov titanium alloys tshiab siv cov khoom siv khib nyiab thiab cov khoom siv qis. Tsis tas li ntawd, oxygen embrittlement yog ib qho kev sib tw tseem ceeb tsis yog rau titanium xwb, tab sis kuj rau zirconium, niobium, molybdenum thiab lawv cov alloys. Cov kev tshawb fawb tshiab tuaj yeem muab cov qauv los daws qhov teeb meem ntawm oxygen embrittlement los ntawm 3D luam ntawv thiab microstructure tsim.
