Al-Cu-Mg Alloys: 2024 thiab 7075 Aluminium
Al-Cu-Mg alloys yog ib qho tseem ceeb tshaj plaws thaum tshav kub kub- kho cov tsev neeg aluminium alloy. Feem ntau siv alloy nyob rau hauv pawg no rau aircraft lug2024 aluminium. Lub hardness ntawm 2024-T3 yog kwv yees li HB120, thaum 2024-T4 ncav cuag HB140.
2024 Aluminium Alloy
2024 txhuas yog tooj liab-raws li alloy paub txog nws lub zog siab- rau- qhov hnyav piv thiab kev qaug zog zoo heev. Vuam yog txwv rau kev sib txhuam vuam, thiab machinability yog nruab nrab. Vim nws tsis tshua muaj corrosion kuj, nws feem ntau tiv thaiv nrog txhuas los yog Al-1Zn cladding, txawm hais tias qhov no yuav txo qis qaug zog.
2024 txhuas feem ntau yog siv rau hauv siab - lub zog dav hlau cov qauv xws li fuselages, tis, thiab lub plab panels. Ntxiv nrog rau nws lub siab tawv, nws muaj kev ntxhov siab corrosion thiab qaug zog, ua rau nws siv dav hauv cov dav hlau pej xeem, suav nrog Boeing thiab Airbus qauv. Lub 2224 txhuas alloy sawv cev rau ib qho ntxiv optimized version ntawm 2024 txhuas.
7075 Aluminium Alloy
7075 yog lub siab - zog, tshav kub- kho tau aluminium alloy nyob rau hauv Al-Zn-Mg-Cu system thiab suav hais tias yog tus thawj coj ntawm super- tawv aluminium alloys. Cov tempers muaj xws li 7075-T6 thiab 7075-T73.
7075 txhuas yog dav siv rau cov khoom siv, tshwj xeeb tshaj yog nyob rau hauv kev siv aerospace. Hauv qhov mob T6 (kev daws teeb meem thiab cov hnub nyoog qub), 7075 nthuav tawm me ntsis ductility qis dua 2024-T6 tab sis me ntsis siab dua 7A04-T6. Cov hlau tsis muaj qhov tsis hnov tsw nyob rau hauv qhov qaug zog zoo li qub tab sis muaj kev ntxhov siab zoo dua corrosion dua li 7A04.
Txhawm rau txhim kho corrosion kuj, 7075 feem ntau overaged. Kev kho T73 suav nrog kev daws teeb meem tom qab los ntawm ob - theem kev laus: thawj zaug ntawm qhov kub thiab txias, tom qab ntawd kub dua. Cov txheej txheem no txo lub zog tensile los ntawm kwv yees li 15% tab sis txhim kho kev ntxhov siab corrosion thiab intergranular corrosion kuj.
GNEEmuaj 2024 thiab 7075 txhuas ntawv. Hu rau GNEE kom nug txog cov lus qhia tshwj xeeb thiab muaj.
2024-T4 vs . 7075-T6 Aluminium
Ob leeg 2024-T4 thiab 7075-T6 yog cov muaj zog aluminium alloys, tab sis 7075-T6 muaj zog ntau dua vim nws cov ntsiab lus zinc, muab lub zog tensile thiab yield zog dua. Qhov no ua rau nws zoo tagnrho rau kev ntxhov siab ntau yam xws li aircraft thav duab. Nyob rau hauv sib piv, 2024-T4, uas yog tooj liab-raws li, muab superior qaug zog tsis kam, toughness, thiab machinability. Nws yog feem ntau siv rau cov tawv nqaij dav hlau, tis tav, thiab rivets, qhov twg formability thiab tsis kam mus tawg yog qhov tseem ceeb tshaj li raw lub zog.
Qhov txawv tseem ceeb:
Lub zog:7075-T6 outperforms 2024-T4 nyob rau hauv tensile thiab yield zog.
Fatigue / Toughness:2024-T4 excels nyob rau hauv qaug zog tsis kam thiab tag nrho toughness.
Corrosion Resistance:7075-T6 (Zn{5}}raws li) yog feem ntau ua rau corrosion tshaj 2024-T4 (Cu-based).
2024-T4 Aluminium
Lub ntsiab Alloying Element:Copper (Cu)
Lub zog tseem ceeb:Kev qaug zog zoo heev, zoo tawg toughness, zoo machinability
Qhov zoo tshaj plaws rau:Cov tawv nqaij dav hlau, tis tav, thiab cov khoom siv uas yuav tsum tau muaj zog tiv taus thiab zoo formability
Qhov tsis zoo:Lub zog qis dua piv rau 7075-T6
7075-T6 Aluminium
Lub ntsiab Alloying Element:Zinc (Zn)
Lub zog tseem ceeb:Siab tensile thiab yield zog, piv rau qee cov hlau
Qhov zoo tshaj plaws rau:Cov khoom muaj kev ntxhov siab heev xws li fuselage thav duab, tsaws iav, thiab cov tswv cuab cov qauv xav tau lub zog siab tshaj plaws
Qhov tsis zoo:Tsawg corrosion kuj (tshwj xeeb tshaj yog rau exfoliation) thiab tsawg formable tshaj 2024-T4
GNEEmuaj ob qho tib si 2024-T4 thiab 7075-T6 aluminium alloys, muab kev daws teeb meem rau aerospace thiab kev ua haujlwm siab ntawm cov ntawv thov.
