Cov nyhuv ntawm aluminium rau microstructure thiab kev kho cua sov ntawm steel

① Txhuas muaj kev sib raug zoo nrog oxygen thiab nitrogen, thiab yog deoxidizing nitrogen tus neeg sawv cev hauv steelmaking.

② Aluminium muaj zog txo qhov austenitic theem cheeb tsam hauv cov hlau.

③ Lub affinity ntawm txhuas thiab carbon yog me me, thiab cov carbides ntawm txhuas tsis tshwm nyob rau hauv steel. Aluminium muaj zog txhawb cov graphitization ntawm carbon, thiab ntxiv ntawm chromium, titanium, vanadium, niobium thiab lwm yam magnetized tsim cov ntsiab yuav inhibit lub graphitization ntawm txhuas.

④ Aluminium refines cov nplej tseem ceeb ntawm cov hlau thiab ua kom cov coarsening kub ntawm steel nplej. Txawm li cas los xij, thaum cov ntsiab lus ntawm txhuas hauv cov hlau ntau tshaj ib qho nqi, cov nplej austenite yooj yim loj hlob thiab coarsening.

⑤ Aluminium tsub kom qhov kev hloov pauv kub ntawm steel martensite thiab txo cov ntsiab lus austenite residual tom qab quenching, uas yog opposite rau lwm yam alloying ntsiab tshwj tsis yog cobalt.