Pombi yesimbi isina ngura yava kushandiswa zvakanyanya, nekuda kwekudzivirira kwayo ngura kwakanaka kwakaita basa rakakosha mukuvaka mainjiniya, mukugadzirwa kwayo tinoda mhinduro yakasimba yekugadzirisa chubhu yesimbi isina ngura, chinangwa chikuru ndechekuwana martensite yakati wandei inowedzera kuomarara kwezvigadzirwa, ngatitarisei mhinduro yekugadzirisa chubhu yesimbi isina ngura:
(1) Mushure mekugadzirisa, inopiswa kusvika (760±15) ℃, uye huwandu hwekabhoni nezvinhu zvakasanganiswa muchubhu yesimbi isina tsvina ye904L inodzikira nekuda kwekunaya kweCr23C6 carbide kubva muchubhu yesimbi isina tsvina ye904L yeaustenitic kwemaminitsi makumi mapfumbamwe, kuitira kuti nzvimbo yeMs ikwidzwe kusvika 70℃ yozotonhodzwa kusvika patembiricha yemukamuri kuti iwane martensite + αferrite + residual austenitic structure. Austenite yakasara yakaora nekukwegura pa510℃.
(2) mushure mekugadziriswa kwekupisa kwakanyanya uye kurapwa kwe cryogenic, mushonga wacho wakatanga wapiswa kusvika 950℃ wochengetwa kwemaminitsi makumi mapfumbamwe. Nekuda kwekuwedzera kweMs point, huwandu hushoma hwe martensite hwaigona kuwanikwa mushure mekutonhorera kusvika patembiricha yemukamuri. Mushure meizvozvo, huwandu hwakati hwe martensite hunogona kuwanikwa nekurapwa nechando kwe -70℃ uye wochengetwa kwemaawa masere.
(3) Mushure mekugadzirisa mushonga nenzira yekuchinja kwemvura inotonhora, martensite yakagadzirwa nechubhu isina musono ye904L inochinja-chinja kutonhora patembiricha yemumba. Huwandu hwemartensite yakagadzirwa nechubhu isina musono ye904L panguva yekuchinja kwemvura inotonhora hunoenderana nehuwandu hwekuchinja kwemvura uye kuumbwa kwechubhu yesimbi isina musono ye904L.
Nzira nhatu dziri pamusoro apa dzinowanzo shandiswa nzira yekurapa nesimbi isina ngura inotarisira kukubatsira.
Nguva yekutumira: Ndira-29-2023