Forgingsngemva kokucisha, i-martensite kanye ne-austenite egciniwe ayizinzile, banokushintsha kwenhlangano okuzenzakalelayo ekuzinzeni, njengekhabhoni ye-supersaturated e-martensite ukuze kuncishiswe ukubola kwe-austenite eyinsalela ukuze kuthuthukiswe ukuguquguquka, okufana nokwehlisa umoya kuyinhlangano engalingani ukuze ulinganisele le nqubo yenhlangano kanye nenqubo yokuxubana kwenhlangano kanye nenqubo yokusabalalisa ndawonye. kuqediwe izinga lokushisa lomlilo liphakeme, isivinini sokusabalalisa ngokushesha;Ngokuphambene nalokho, ngokwanda kwezinga lokushisa elishisayo, isakhiwo sokucisha se-forging sizobhekana nochungechunge lwezinguquko. Ngokwesimo sokuguqulwa kwe-microstructure, ukushisa kuvame ukuhlukaniswa ngezigaba ezine: ukubola kwe-martensite, ukubola kwe-austenite eyinsalela, ukukhula kokuqoqwa kwe-carbide kanye ne-ferrite recrystallization.
Isigaba sokuqala (200)
(1) ukuqambaI-martensite eshisayo ibola ngaphansi kwezingu-80 zokushisa, icisha insimbi ngaphandle kokuguqulwa kwe-Ming S, ukuvela kwekhabhoni e-martensite ingxenye kuphela, futhi akukho ukuqala ukudiliza ku-80-200 tempering, i-martensite iqala ukubola, imvula i-carbides ecashile kakhulu, inciphisa ingxenye enkulu ye-martensite esiteji se-carbon duecitation, i-martensite ephansi kakhulu yama-athomu ekhabhoni ene-supersaturated, ngakho-ke kuseyikhabhoni ku- - Fe supersaturated isixazululo esiqinileImvula ye-carbide ecwebe kakhulu isabalalisa ngokulinganayo ku-matrix ye-martensite. Isakhiwo esixubile sokugcwala okuphansi kwe-Martensite kanye ne-carbide enhle kakhulu kubizwa ngokuthi i- tempered Martensite.

(2)ukuqambaukufudumala esigabeni sesibili (200-300), ukubola kwe-austenite eyinsalela lapho izinga lokushisa likhuphuka laya ku-200-300, ukubola kwe-martensite kwaqhubeka, kodwa ushintsho oluvelele luyizinsalela zokubola kwe-austenite ye-austenite eyinsalela yokubola kwaba ngokusebenzisa ukunwetshwa kwe-athomu ye-carbon ukuze akhe ingxube ye-alphabet bese ihlukanisa indawo, futhi i-alphabliki iyingxenye ye-alphae. ukwakheka kokuqina kwensimbi ye-bainite akunciphisi ngokusobala kulesi sigaba
(3)Isigaba sesithathu (250-400) sokuguqulwa kwe-carbide ye-forging tempering ikulolu hlu lokushisa. Ngenxa yokushisa okuphezulu, ikhono lokusabalalisa i-Carbon athomu linamandla, ikhono lokusabalalisa lokubuyisela ama-athomu ensimbi futhi, i-martensite ibolisa ukuguqulwa kwe-carbides yemvula kanye nokubola okusele kwe-austenite kuzoguqulwa kube usimende ozinzile ngokuhlukana nokuguqulwa kwe-carbides, ukwehla kwe-martensite in carbon dioxide disruption marte , i-martensite marte fractions, i-martensite marte fraction i-ferrite, thola ukusatshalaliswa kwe-matrix ye-ferritic ngaphakathi kwe-granular encane noma i-lamellar cementite yenhlangano, inhlangano ebizwa ngokuthi i-temering ngokuyisisekelo iqedwe lesi sigaba sokucisha ingcindezi, ubulukhuni, ukuqina kwepulasitiki kwathuthukiswa.

(4)Isigaba sesine forging tempering (& GT;400) wakhulela carbide eqoqwe futhi recrystallization of ferrite ngenxa tempering lokushisa liphezulu kakhulu, carbon kanye nensimbi athomu babe ikhono eliqinile kwande, isigaba sesithathu ukwakheka cementite flakes ngeke ngokuqhubekayo spheroidizing futhi wakhulela ezingaphezu kuka 500-600, ishidi le-alpha of crystallisation kwenzeka kancane kancane, ipuleti ukulahlekelwa ifomu lecrystal noma ipuleti ferrite kwenzeka kancane kancane. ukusabalalisa okusanhlamvu kwe-polygon enhlanganweni njenge-ferritic matrix granular carbides, iqembu elibizwa ngokuthi i-temering sorbite tempered sorbite enezici ezinhle eziphelele zemishini zesigaba kanye nokuhlanekezela kwe-lattice kuqeda ukucindezeleka kwangaphakathi.

(kusuka ku-168 forging net)