Structure Austénitique Ya Alliage

Austenite ezali structure cristalline ya ntina oyo ezwami na bibende mpe na ba alliages misusu ya fer-, eyebani mpo na makasi na yango ya likolo mpe plasticité. Austenite ezali na structure cubique centrée ya elongi-(FCC), na ba atome ya ebende oyo ezali na ba sommets mpe na ba centres ya elongi ya cube, mpe carbone to ba éléments alliages mosusu ekoki kozala solide-ko résoudre na ba interstices.

 

Austenite ezali microstructure ya alliage. Esengeli kokokisa makambo mibale:

1. Bokeli ya cristal ya alliage ezali structure cubique centrée elongi-e.

2. Alliage ezali solution solide.

 

Austenite ezali na bizaleli ya plasticité ya malamu, coefficient ya expansion thermique ya nse, mpe performance ya température ya likolo-ya malamu. Pene na ba aciers inoxydables nionso oyo emonanaka mingi mpe ba alliages ya température ya likolo- ezali ba alliages austénitiques.

 

Na ba applications pratiques, plasticité malamu ya ba alliages austénitiques epesaka bango makoki ya kosala stable pendant longtemps na température ya monene, yango wana ba aciers inoxydables oyo basalelaka mingi ezali nionso ba aciers inoxydables austénitiques.

 

Ezaleli mosusu ya ntina ya ba alliages austénitiques ezali performance na yango excellent ya température ya likolo-. Na températures ya likolo, structure cubique centrée elongi-ekoki kobatela stabilité structurelle ya malamu, na yango ko assurer makasi ya ba alliages austénitiques na températures ya likolo. Yango wana pene na ba alliages nionso ya température ya likolo- ezali ba alliages austénitiques.

 

Bongo nini emonisaka soki alliage ezali na structure austénitique?

Sikawa, toyebi ete ba alliages austénitiques esengeli kozala na structure cubique centrée ya elongi-(FCC). Yango wana, esengeli to comprendre lisusu ba éléments métalliques nini ezali na structure ya FCC.

 

Ebende oyo emonanaka mingi ezali ebende, mpe ebende ya ebende ezali solo na structure ya FCC. Malheureusement, fer ezali na ba propriétés ya allotropie. Elingi koloba ete ebende ekoki kaka kobatela structure ya FCC na kati ya température ya 912 degrés kino 1394 degrés . Na ba températures mosusu, fer ebongwanaka na structure cubique centrée (BCC) ya nzoto-.

 

Na esika oyo, tozali na mposa ya nokinoki ya élément métal oyo ekoki ko garantir structure ya FCC na température nionso. Elemento oyo ezali nickel. Soki kaka nickel na alliage ezali likolo ya 9%, structure ya FCC ekoki kozala maintenue. Yango wana, kaka kobakisa 9% to koleka nickel na ebende ekoki kosala ete alliage yango ezala na structure austénitique na température nionso. Yango wana ba aciers inoxydables nionso na ba alliages ya température ya likolo- ezali na nickel.