Indasteri e Hloekileng Titanium Ka Mocheso oa Kamore One ECAP Processing Structure And Hardness

Titanium e hloekileng ea indasteri ke ea alloy, e leng sebopeho se teteaneng sa hexagonal (HCP) se nang le khanyetso e ntle ea kutu, thepa ea mochini le thepa ea welding. E sebelisoa haholo sebakeng sa sefofane, indasteri ea lik'hemik'hale, ea boenjiniere ba leoatle le masimo a mang.ECAP deformation e ka ntlafatsa haholo lijo-thollo, ea ntlafatsa sebopeho le ho ntlafatsa thepa ea mochine.Ka lebaka leo, theknoloji ea ECAP e amehile haholo ke litsebi tsa lehae le linaheng tse ling lilemong tse mashome tsa morao tjena.Hona joale, lingoliloeng tse ngata li tlalehile hore ECAP e atlehile ho lokisetsa kristale ea ultrafine (UFG-center cubiccenter), ho kenyelletsa le lisebelisoa tsa tšepe tse entsoeng ka sefahleho sa UFG. sebopeho tšepe, le densely lokisetsa hexagonal sebopeho.

Ho thata ho hlalosoa e le bokhoni ba holim'a thepa ea tšepe ho hanela khatello ea lintho tse ling tse thata, tse ka bonahatsang thepa ea 'mele le ea mechine e kang elasticity, matla a polasetiki, toughness le ho roala ho hanyetsa lintho tse bonahalang. ho bile le litlaleho tse ngata mabapi le liphetoho tsa ho thatafala ha thepa e sebetsitsoeng ke theknoloji ea ECAP. Leha ho le joalo, ka lebaka la hore indasteri e hloekileng ea titanium ke tšepe e hlophisitsoeng hantle ea hexagonal, tsamaiso ea eona ea ho thella e ka tlaase ho ea tšepe ea sebopeho sa cubic, 'me polasetiki ea eona e futsanehile, ECAP deformation e thata. Liphuputso tse ngata linaheng tse ling li etsoa ka mocheso o phahameng, 'me extrusion e atlehileng ka mocheso oa kamore ke rare.Researchers haholo-holo o ile a ithuta microstructure le ho thatafala liphetoho tsa indasteri e hloekileng titanium ka mor'a hore ECAP extrusion ea hlobo e fapaneng mocheso kamoreng,' me sekaseka mabaka a susumetsang ho thusa ho ntlafatsa theknoloji ea ho sebetsa.

Thepa ea liteko ke indasteri e hloekileng ea titanium (TA1) sebakeng se chesang se kolobisitsoeng.Motsoako oa eona oa lik'hemik'hale (karolo ea boima, %) ke: 0.10O, 0.001H, 0.01N, 0.007C, 0.03Fe.Karolelano ea boholo ba lijo-thollo 23 m le equiaxed single-phase structure.407MP hardness was 1588MP 35MP 'me elongation e ne e le 15%.Hot rolled plate seha ka 15 mm * 70 mm * 90 mm ea disampole ECAP, ho sebelisa tse peli channel Angle Φ = 120 ° le 20 ° Φ =, likhutlo tse chitja ke hlobo bakeng sa Ψ = 90 °, ECAP deformation mocheso kamoreng ka nako.Nako eo ha hlobo e ka bang 1.08 °, 120;Nako eo hlobo Φ = 0.635 °, khatello e lekanang e ka bang 120;Pele ho teko, kanale ea hlobo le sampole li ne li koahetsoe ka mafura a maiketsetso a maiketsetso.Lebelo la extrusion e ne e le XNUMXmm/min. Liphetho tsa lipatlisiso:

(1) Phetoho e le 'ngoe ea ECAP ea 90 ° le 120 ° hlobo ea indasteri e hloekileng ea titanium e ile ea phethahala ka mocheso oa kamore, 'me ho ile ha fumanoa lithane tse lelefalitsoeng ka lehlakoreng le le leng ka ho latellana.

(2) ECAP deformation ea indasteri e hloekileng titanium mocheso kamoreng ka haholo hloekisa lijo-thollo le ho ntlafatsa ho thatafala, 'me boleng thatafatsa ka mor'a extrusion e' ngoe le hlobo tse fapaneng (90 ° le 120 °) na phapang e nyenyane.

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