Duplex Bakin Karfe Castings

Duplex Bakin Karfe(DSS) yana nufin rukuni na bakin karfe tare da microstructure na ƙarfe na ferrite da austenite kowane lissafin kusan kashi 50%. Gabaɗaya, abun ciki na ƙananan matakai yana buƙatar zama aƙalla 30%. A cikin yanayin ƙarancin abun ciki na carbon, abun cikin Cr shine 18% zuwa 28%, kuma abun cikin Ni shine 3% zuwa 10%. Wasu bakin karfen duplex kuma sun ƙunshi abubuwa masu haɗawa kamar Mo, Cu, Nb, Ti, da N. DSS tana da halayen austenitic da ferritic bakin karfe. Idan aka kwatanta da ferrite, yana da mafi girma plasticity da ductility, babu dakin zafin jiki brittleness, kuma muhimmanci inganta intergranular lalata juriya da waldi yi, yayin da har yanzu rike brittleness, high thermal watsin, da superplasticity kamar ferrite bakin karfe. Idan aka kwatanta daaustenitic bakin karfe, DSS yana da ƙarfi mai ƙarfi kuma yana haɓaka juriya sosai ga lalata intergranular da lalata damuwa na chloride. Bakin karfe Duplex yana da kyakkyawan juriyar lalata kuma shima bakin karfe ne mai ceton nickel. Akwai maki na simintin bakin karfe na duplex ta hanyar simintin saka hannun jari na kakin zuma: 1.4460, 1.4462, 1.4468, 1.4469, 1.4517, 1.4770, A 890 1C, A 890 1A, A 890 9A 5A 0A 995 1B, A 995 4A, A 995 5A, 2205, 2507, 022Cr22Ni5Mo3N, 022Cr25Ni6Mo2N