Dab tsi yog cov yam ntxwv ntawm 7055 aluminium alloy? Nws tshwj xeeb siv rau qhov twg?

Lub 7055 hom tau tsim los ntawm Alcoa hauv xyoo 1980s thiab tam sim no yog cov khoom lag luam siab tshaj plaws uas muaj zog aluminium alloy. Nrog rau kev qhia txog 7055, Alcoa kuj tau tsim cov txheej txheem kho cua sov rau T77 tib lub sijhawm.

Kev tshawb fawb txog cov khoom no hauv Suav teb tej zaum tau pib nyob rau nruab nrab mus rau lig 1990s. Daim ntawv thov kev lag luam ntawm cov khoom siv no kuj tsis tshua muaj, thiab feem ntau yog siv rau hauv kev tsim dav hlau, xws li daim tawv nqaij sab sauv, kab rov tav tus Tsov tus tw, zaj skeleton, thiab lwm yam ntawm B777 thiab A380 Airbus.

Cov khoom no feem ntau tsis muaj nyob rau hauv kev ua lag luam, tsis zoo li 7075. Lub ntsiab tseem ceeb ntawm 7055 yog txhuas, manganese, zinc, magnesium, thiab tooj liab, uas kuj yog lub hauv paus ntsiab lus ntawm kev ua tau zoo ntawm ob qho tib si. Qhov nce ntawm manganese ntsiab txhais tau hais tias 7055 muaj zog corrosion kuj, plasticity, thiab weldability piv rau 7075.

Nws yog tsim nyog hais tias cov tawv nqaij sab sauv thiab sab sauv ntawm C919 tis yog ob qho tib si 7055.