TC4 Titanium Alloy Txheej txheem cej luam
TC4 Titanium Alloy, hu ua Ti -6 al {2} v Hauv kev lag luam, yog ib txwm-siv - titanium alloy. Nws muaj cov khoom siv zoo, uas ua rau cov khoom siv dav hauv kev kho mob, kho mob, tshuaj lom neeg thiab lwm thaj chaw. To taub nws cov thermal diffusivity thiab kev kub kub muaj peev xwm tseem ceeb rau kev tsim thiab daim ntawv thov.
Txhais thiab qhov tseem ceeb ntawm kev diffus diffusivity ntawm TC4
Thermal diffusivity txhais tau hais tias qhov sib piv ntawm thermal conductivity mus ceev thiab tshwj xeeb lub zog muaj zog. Nws yog ib qho tseem ceeb rau cov thermal conductivity ntawm cov khoom siv ,. Nws chav yog M² / s thiab yog siv los piav txog tus nqi diffusion ntawm cov cua sov hauv cov khoom.
Qhov ntsuas no cuam tshuam rau cov yam ntxwv uas faib tawm ntawm cov txheej txheem kub ntxhov ntawm cov khoom siv cua sov, thiab tom qab ntawd kev txiav txim siab lub zog cua tshuab cua kev ua haujlwm thiab kev pabcuam lub neej ntawm cov khoom.
Qhov kev hloov pauv no sib txawv nrog qhov ntsuas kub. Nyob rau hauv chav tsev kub, nws thermal diffusivity yog li 8.4 x 10 ^ -6 m² / s. Thaum qhov kub nce ntxiv, lub thermal diffusivity yuav ua kom muaj zuj zus. Lub thermal diffusivity cov ntaub ntawv ntawm tc4 titanium alloy ntawm qhov kub sib txawv qhia tau raws li ua raws:
9.1 x 10 ^ -6 m² / s (100 degree)
10.5 x 10 ^ -6 M² / s (300 degree)
12.2 x 10 ^ {-6 M² / s (500 degree)
13.8 x 10 ^ {-6 m² / s (700 degree)
Raws li cov ntaub ntawv saum toj no, peb tuaj yeem nrhiav tau tias cov thermal diffusonity tseeb yog nce nrog qhov nce ntawm kub. Qhov no ua pov thawj tias cua sov hauv TC4 Diffuses sai dua ntawm qhov kub siab. Qhov txiaj ntsig no yog ib qho tseem ceeb heev rau kev tsim qauv thiab daim ntawv thov.
Lub ntsiab lus thiab tseem ceeb ntawm TC4 cov peev txheej tshwj xeeb
Qhov kev kub muaj peev xwm tshwj xeeb yog txhais tias yog qhov ntau npaum li cas ntawm cov cua sov xav tau rau cov khoom siv ib pawg loj thaum tsa ib chav ntsuas kub. Chav tsev yog J / (KegiM k). Nws yog ib qho tseem ceeb los sawv cev rau cov ntaub ntawv muaj peev xwm nqus tau thaum tshav kub.
Cov cua kub tshwj xeeb ua si lub luag haujlwm tseem ceeb hauv cov qauv tsim hluav taws xob thiab kev tswj hwm thermal. Nkag siab txog cov kev kub muaj peev xwm ntawm TC4 yuav pab twv seb nws tus cwj pwm thermal ntawm ntau qhov kub. Yog li cov neeg tuaj yeem ua kom zoo rau kev siv cov khoom hauv thermal tsim thiab thermal tswj nyob rau hauv cov teb ntawm aerospace thiab kho mob.
Qhov tshwj xeeb cua sov muaj peev xwm ntawm TC4 kuj tau sib txawv nrog qhov kub thiab txias. Nyob rau hauv chav tsev kub, nws cov kev kub muaj peev xwm kub muaj li 560 J / (KGNIN. Thaum qhov kub nce ntxiv, qhov tseeb kub muaj peev xwm nce ib yam nkaus. Cov ntaub ntawv tshwj xeeb cov ntaub ntawv muaj peev xwm ntawm kev kub kub ntawm TC4 raws li hauv qab no:
580 j / (KGB · K) (100 degree)
610 J / (KGB - (300 DEGREE)
640 j / (KGB · K) (500 Degree)
670 j / (KGB - (700 DEGREE)
Nws tuaj yeem pom los ntawm cov ntaub ntawv tias cov tshwj xeeb ua kom sov muaj peev xwm ntawm TC4 Titanium alloy yeej nce ntxiv thaum qhov kub nce ntxiv. Nws txhais tau hais tias lub peev xwm ntawm TC4 kom nqus thiab tso tawm thaum tshav kub kub tau txhim kho thaum kub.
Yam cuam tshuam rau cov thermal diffusivity thiab kev kub muaj peev xwm tshwj xeeb
Muaj 4 yam raws li raws li ua raws:
1. Cov khoom siv microstructure
Cov Qauv Microstructure ntawm TC4 Titanium alloy muaj qhov loj me, uas yog qhov tseem ceeb cuam tshuam rau nws cov cua sov diffusivity thiab cov kev kub tshwj xeeb. Cov txheej txheem kev kho cua sov sib txawv tuaj yeem hloov cov theem muaj pes tsawg leeg tuaj yeem hloov pauv qhov loj me ntawm cov alloy, yog li kom cuam tshuam rau nws cov cua sov.
2. Qho so
Peb tau paub tias ua ntej. Qhov kub muaj qhov pom tseeb ntawm cov thermal diffusivity thiab tshwj xeeb kub muaj peev xwm ntawm TC4 Titanium khoom. Thaum kub, cov lus qhia atomic hatensifies, lub thermal conductivity nce, thiab cov tshwj xeeb kub muaj peev xwm nce ib yam li.
3. Concentration ntawm alloy cov ntsiab
Cov ntsiab lus sib txawv ntawm cov ntsiab lus sib txuam tseem cuam tshuam rau cov tsis muaj no ntawm TC4 Alloy. Piv txwv li, nws yog qhov ua pov thawj tias cov ntsiab lus ntawm txhuas thiab Vanadium ncaj qha cuam tshuam rau tag nrho cov cua sov cov khoom cua ntawm cov alloy.
4. Npaj kev
Cov thev naus laus zis muaj cov teebmeem tseem ceeb ntawm cov khoom cua sov ntawm cov alloys, casting thiab hmoov metallurgy vim tias cov txheej txheem sab hauv thiab qhov sib txawv ntawm cov qauv ntawm cov khoom. Raws li qhov tshwm sim, cov teeb meem no yuav cuam tshuam rau lub thermal diffusivity thiab tshwj xeeb cua sov muaj peev xwm ntawm cov khoom alloy.