Ipayipi lensimbi engagqwali manje lisetshenziswa kabanzi, ngenxa yokumelana nokugqwala okuhle kuye kwadlala indima ebalulekile ekwakhiweni kobunjiniyela, inqubo yokukhiqiza sidinga isisombululo esiqinile sokucubungula ishubhu yensimbi engagqwali, inhloso eyinhloko ukuthola i-martensite ethile yokwandisa ubulukhuni bemikhiqizo, ake sibheke isixazululo sokucubungula ishubhu yensimbi engagqwali:
(1) Ngemuva kokwelashwa kwesixazululo, ifudunyezwa ibe ngu-(760±15) ℃, futhi okuqukethwe kwekhabhoni nezinto ezixutshiwe eshubhuni yensimbi engagqwali engu-904L yehlisiwe ngenxa yokuwa kwe-Cr23C6 carbide kusuka eshubhu lensimbi engagqwali engu-904L engu-90min inyuswe ukuze ifinyelele egumbini elipholile elingu-70min, ukuze izinga lokushisa libe ngu-70min. i-martensite + αferrite + isakhiwo se-austenitic esisele. I-austenite eyinsalela yonakaliswa ukuguga ku-510 ℃.
(2) ngemva kokulungiswa kwezinga lokushisa eliphezulu kanye nokwelashwa kwe-cryogenic, isisombululo saqala ukushiswa sibe ngu-950 ℃ futhi sibanjwe i-90min. Ngenxa yokwanda kwe-Ms point, inani elincane le-martensite lingatholakala ngemva kokupholisa ekamelweni lokushisa. Ngemuva kwalokho, inani elithile le-martensite lingatholwa ngokwelashwa okubandayo -70 ℃ futhi libambe amahora angu-8.
(3) Ngemuva kokwelashwa kwesixazululo ngendlela ebandayo yokuguqula, i-martensite eyakhiwe yi-904L engenamthungo ishubhu ebandayo ikhubazekile ekamelweni lokushisa. Inani le-martensite elakhiwe ishubhu elingenamthungo elingu-904L ngesikhathi sokuguquguquka okubandayo lihlobene nenani lokuguquguquka kanye nokwakheka kweshubhu lensimbi engagqwali elingu-904L.
Lezi zindlela ezintathu ezingenhla zivame ukusetshenziswa indlela yokwelapha isisombululo sensimbi engagqwali ngethemba lokuletha usizo kuwe.
Isikhathi sokuthumela: Jan-29-2023