Ipayipi lensimbi engagqwali manje elisetshenziswa kabanzi, ngenxa yokumelana nokugqwala okuhle kuye kwadlala indima ebalulekile ekwakhiweni kwezobunjiniyela, inqubo yokukhiqiza sidinga isisombululo esiqinile sokucubungula ishubhu yensimbi engagqwali, inhloso eyinhloko ukuthola ukwanda okuthile kwe-martensite. ubulukhuni bemikhiqizo, ake sibheke isisombululo sokucubungula ishubhu yensimbi engagqwali:
(1) Ngemuva kokwelashwa kwesixazululo, ishiselwa ku-(760±15) ℃, futhi okuqukethwe kwekhabhoni nezinto ezixutshiwe eshubhuni yensimbi engagqwali engu-904L yehlisiwe ngenxa yemvula ye-Cr23C6 carbide esuka kushubhu yensimbi engenasici engu-904L ye-austenitic. 90min, ukuze iphuzu lika-Ms liphakanyiswe libe ngu-70℃ bese lipholiswa ekamelweni lokushisa ukuze kutholwe isakhiwo se-martensite + αferrite + residual austenitic.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 yokuguqulwa, i-martensite eyakhiwe yi-904L ithubhu engenamthungo ibande 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 ngendlela yokwelashwa kwesisombululo sensimbi engagqwali ngethemba lokuletha usizo kuwe.
Isikhathi sokuthumela: Jan-29-2023