I. Kev soj ntsuam ntawm Torsional Properties ntawm TA18 Titanium Alloy
(1) Torsional Strength thiab Torsional Fracture Strain
Lub zog torsional thiab torsional puas strain ntawm TA18 titanium alloy qhia pom tseeb qhov kub thiab txias - nyob ntawm cov yam ntxwv nyob rau hauv qhov sib txawv kub. Raws li kev sim cov ntaub ntawv, ntawm chav tsev kub (20 degree), lub zog torsional ntawm no alloy tuaj yeem ncav cuag 220 MPa; Thaum qhov kub nce mus txog 60 degree, lub zog torsional poob mus rau 190 MPa. Qhov tseem ceeb, nws qhov torsional puas strain yog kwv yees li 10% ntawm chav tsev kub, uas yog siab dua li ntawm lwm yam alloys, ua rau pom zoo heev torsional deformation kuj.
(2) Torsional Properties thiab Microstructure
Lub microstructure ntawm cov khoom plays lub luag hauj lwm txiav txim siab nyob rau hauv nws torsional zog. Kev ua kom zoo ntawm cov nplej thiab tsim cov theem ob (xws li 'theem) hauv TA18 titanium alloy yog qhov tseem ceeb rau kev txhim kho cov khoom siv lub zog thiab tawv. Electron microscopy soj ntsuam qhia tau hais tias cov txheej txheem melting optimized tuaj yeem txhim kho microstructure ntawm alloy. Tshwj xeeb, cov txheej txheem melting tsim nyog tuaj yeem ua rau cov nplej me me thiab zoo ib yam, thiab kev faib tawm ntawm theem thib ob tsim nyog, yog li txhim kho cov khoom torsional ntawm cov khoom.
(3) Qhov kub thiab txias ntawm Torsional Properties
Nyob rau hauv siab - qhov kub thiab txias ib puag ncig, lub zog torsional ntawm TA18 titanium alloy ua ntau nyuaj. Cov txiaj ntsig kev sim qhia tau hais tias thaum qhov kub siab tshaj 100 degree, ob qho tib si torsional zog thiab toughness ntawm cov khoom hloov pauv loj. Tshwj xeeb, lub zog torsional txo qis li ntawm 15%, thaum lub zog torsional tawg nce mus rau 15%. Qhov tshwm sim no tej zaum yuav muaj feem xyuam rau cov thermal deformation ntawm qhov kub thiab txias ntxiv rau theem ob. Nyob rau hauv siab - qhov kub thiab txias, lub atomic kev ua nyob rau hauv cov ntaub ntawv intensifies, ua rau lattice distortion thiab yog li cuam tshuam rau nws mechanical zog; Nyob rau tib lub sijhawm, nag lossis daus tus cwj pwm ntawm theem ob kuj hloov cov khoom siv microstructure, yog li cuam tshuam nws cov khoom torsional.
II. Kev soj ntsuam ntawm Melting txheej txheem ntawm TA18 Titanium Alloy
(1) Melting Point thiab Composition Control
Lub melting point ntawm TA18 titanium alloy yog kwv yees li 1650 degree, me ntsis siab dua li cov titanium alloys. Cov txheej txheem melting meej yog qhov tseem ceeb rau kev tswj cov khoom sib xyaw. Tsuas yog los ntawm kev ua kom ntseeg tau qhov tseeb ntawm qhov muaj pes tsawg leeg tuaj yeem lav qhov ruaj khov ntawm cov khoom siv. Nws raug nquahu kom txais yuav cov mis nyuj khov ruaj khov thiab tsim nyog sib xyaw cov ntsiab lus hlau thiab cov khoom ntxiv (xws li nitrogen, carbon, thiab lwm yam). Los ntawm optimizing qhov kev faib ua feem ntawm cov ntsiab lus, cov khoom siv kho tshuab thiab kev tsim cov txheej txheem ntawm cov hlau tuaj yeem txhim kho tau zoo. Piv txwv li, qhov sib ntxiv ntawm nitrogen tuaj yeem txhim kho lub zog ntawm cov hlau, thaum ntxiv cov pa roj carbon monoxide pab txhim kho nws cov tawv nqaij.
(2) Melting Kub thiab Alloy Microstructure
Kev tswj ntawm melting kub muaj feem cuam tshuam rau microstructure ntawm cov hlau. Los ntawm kev tswj cov ntsiab lus melting thiab kev sib hloov ceev, cov nplej loj thiab microstructure hom tuaj yeem tswj tau zoo. Cov ntaub ntawv sim qhia tau hais tias kev sib hloov ceev tuaj yeem txhawb nqa qhov sib xws ntawm microstructure. Thaum lub sij hawm melting txheej txheem, kev sib hloov ceev ceev tuaj yeem ua rau kub thiab muaj pes tsawg leeg nyob rau hauv cov yaj ntau yam, txo qhov sib cais thiab coarsening ntawm cov nplej, yog li txhim kho cov kev ua tau zoo ntawm cov khoom.
(3) Cov lus pom zoo rau cov txheej txheem melting
Txhawm rau kom ua tiav qhov zoo tshaj plaws torsional kev ua tau zoo thiab kev ruaj ntseg, cov txheej txheem melting hauv qab no tau pom zoo ntsuas:
1. Siv qhov ntsuas kub tsis tu ncua -kub melting system: xyuas kom meej qhov kub thiab txias thaum lub sij hawm melting txheej txheem. Ib qhov tas li -kub melting system muaj peev xwm tswj tau qhov kub thiab txias, tsis txhob cuam tshuam qhov kub ntawm qhov hloov pauv ntawm microstructure thiab cov khoom ntawm cov hlau. Ib puag ncig kub ruaj khov yog qhov tsim nyog rau kev loj hlob zoo ntawm cov nplej thiab txhim kho cov khoom siv kho tshuab.
2. Precisely tswj lub ntsiab ratio nyob rau hauv lub melting mis los ntawm microcomputer: Siv advanced computer tswj systems kom raug hnyav thiab ntxiv ntau yam ntsiab lus, kom ntseeg tau qhov tseeb ntawm cov muaj pes tsawg leeg ratio. Kev tswj xyuas meej ntawm cov khoom piv yog tus yuam sij kom tau txais qhov zoo tagnrho microstructure thiab cov khoom.
3. Xaiv qhov tsim nyog kev sib hloov ceev thiab lub sij hawm melting: Los ntawm kev sim thiab kev tshawb fawb, txiav txim siab qhov zoo tshaj plaws ntawm kev sib hloov ceev thiab lub sij hawm melting kom tau qhov zoo tshaj plaws microstructure. Kev sib hloov ceev sib txawv thiab lub sij hawm melting yuav cuam tshuam qhov loj me, cov duab ntawm cov nplej thiab kev faib tawm ntawm theem thib ob, uas nyob rau hauv lem yuav cuam tshuam cov khoom ua haujlwm. Yog li ntawd, nws yog ib qho tsim nyog yuav tsum tau ua kom zoo tsim nyog raws li qhov tshwj xeeb alloy muaj pes tsawg leeg thiab kev ua tau zoo.
III. Xaus
TA18 titanium alloy qhia tau zoo heev txhua yam khoom thiab corrosion kuj nyob rau hauv torsion kev ua tau zoo. Nws qhov kev ua tau zoo tshaj plaws yog ntaus nqi rau qhov zoo heev microstructure thiab optimized melting txheej txheem tswj. Los ntawm hauv - kev soj ntsuam qhov tob ntawm cov khoom siv microstructure thiab qhov kub thiab txias, ua ke nrog kev tswj cov txheej txheem melting tsim nyog, cov khoom ua tau zoo tuaj yeem txhim kho ntxiv, yog li ua tau raws li qhov xav tau ntawm daim ntawv thov nyuaj. Nyob rau hauv lub neej yav tom ntej, nrog kev tshawb fawb tob zuj zus ntawm TA18 titanium alloy thiab kev ua kom zoo dua ntawm cov txheej txheem melting, nws daim ntawv thov kev cia siab nyob rau hauv ntau qhov chaw yuav dav dua.