Matarua kowiri tira Maka

Matarua Kowiri tira(DSS) e pā ana ki te roopu kowiri tira me te hangahanga moroiti whakarewa o te ferrite me te austenite mo ia kaute mo te 50%. Ko te tikanga, me 30% te iti rawa o nga waahanga. I roto i te take o te iti o te waro, ko te ihirangi Cr he 18% ki te 28%, me te ihirangi Ni ko te 3% ki te 10%. Ko etahi tira kowiri matarua kei roto ano nga huānga whakakotahi penei i te Mo, Cu, Nb, Ti, me te N. Kei te DSS nga ahuatanga o te kowiri tira austenitic me te ferritic. Ina whakaritea ki te ferrite, he teitei ake te kirihou me te ductility, kahore he pakarutanga o te pāmahana rūma, me te tino pai ake te aukati i te waikura intergranular me te mahi fehokotaki, i te wa e mau tonu ana te pakaruhanga, te kaha o te waiariki, me te superplasticity rite ferrite kowiri tira. Ka whakatauritea kikowiri tira austenitic, He kaha te kaha o te DSS me te tino whakapai ake i te aukati ki te waikura intergranular me te waikura ahotea pūhaumāota. He pai rawa te kowiri tira Duplex he parenga waikura poka, he kowiri tira hoki te tiaki nika. Ko nga tohu e waatea ana mo te kowiri tira matarua i maka e te whakarewanga haumi wax ngaro : 1.4460, 1.4462, 1.4468, 1.4469, 1.4517, 1.4770, A 890 1C, A 890 1A, A 890 3A, A 890 3A, A 890, A 90 1B, A 995 4A, A 995 5A, 2205, 2507, 022Cr22Ni5Mo3N, 022Cr25Ni6Mo2N