Uhlalutyo lwendlela yokukhuthaza ukuqhekeka kuluncedo ekulawuleni esona sizathu sibalulekileyo sokuqhekeka, esisisiseko senjongo yokuchongwa kweecrack. Inokujongwa kwizinto ezininzi zokuhlalutya i-crack case kunye novavanyo oluphindaphindiweyo ukuba indlela kunye neempawu ze-alloy forgings zensimbi azikho i-symmetrical, enobungozi obuphambili bokuqhekeka.

1. Imathiriyeli ekrwada ene-symmetrical mechanism kunye neempawu.

Kuyo yonke inkqubo ye-deformation, i-dislocation exercise ecaleni kwe-sliding plane, kwaye xa idibana nomqobo wendlela, iya kufumba kwaye ibangele uxinzelelo olwaneleyo lomhlaba ukuze kubangele iintanda, okanye i-cavitation kunye ne-micro-cracks ngenxa yentsebenziswano ye-dislocation, edibeneyo indlela yophuhliso lweentanda kuqoqosho olukhulu. Esi siphumo siphambili kwiqondo lokushisa lokuguqulwa liphantsi (liphantsi kunomsebenzi onzima wokushisa), okanye inqanaba le-deformation likhulu kakhulu, izinga lokuguqulwa likhawuleza kakhulu. Olu hlobo lokuqhekeka luhlala luxubene ne-transgranular okanye i-transgranular kunye ne-intergranular exutywe, kodwa ngenxa yokuba iimolekyuli zobushushu obuphezulu zinezinga eliphezulu lokusasazwa kwangaphandle, zikhuthaza ukunyuka kwe-dislocation, ukukhawulezisa ukulungiswa kwe-forging kunye nomsebenzi wokuqina, ukuze inkqubo yokuguqulwa sele ibangele i-micro. i-crack kulula ukuyilungisa, kwiqondo lokushisa lokuguqulwa lifanelekileyo, izinga lokuguqulwa liyimeko ecothayo, ayikwazi ukuphuhlisa umkhwa wokuqhekeka kwezoqoqosho.

2. Imathiriyeli ekrwada enendlela engalinganiyo kunye neempawu.

Kwizixhobo ezineendlela kunye neempawu ze-asymmetrical, ukuqhekeka kwenzeka ngokubanzi kwimida yengqolowa kunye namaphepha athile esigaba. Oku kungenxa yokuba i-deformation yokubunjwa iqhutyelwa ngokubanzi malunga nobushushu obulinganayo bezinto zetsimbi. I-deformation yomda wengqolowa inkulu kakhulu, ngoko ke umda weenkozo wezinto zetsimbi yinto engafanelekanga kwi-industry metallurgical, isigaba sesibini kunye nezinto ezingekho zetsimbi zigxininiswe kwindawo. Kubushushu obuphezulu, imichiza esezantsi yokunyibilika kwimida yengqolowa yezinye izinto ezikrwada ivelisa ukunyibilika, okungqongqo.

Ukunciphisa i-deformation yeplastiki yezinto eziluhlaza; Kwiqondo lokushisa eliphezulu, ezinye izinto (isulfure, ubhedu, njl.njl.) kwizinto ezijikelezileyo zisasazwa ecaleni komda wengqolowa ukuya ngaphakathi nangaphandle kwezinto zetsimbi, okukhokelela ekubonakaleni okungaqhelekanga kwesigaba sesibini kunye nobuthathaka bomda weenkozo. . Kwesinye, izinto zentsimbi eziqhelekileyo zinezibophelelo ezingezizo kunye nezigaba ezithile ngenxa yomahluko weempawu zomzimba kunye neekhemikhali zezi zigaba zibini.

Iimathiriyeli ekrwada ezidla ngokusetyenziswa ekubumbeni azikho macala onke. Ke ngoko, ukuqhekeka kwe-forging yasimahla kwenzeka kwaye kuphuhliseka ecaleni komda weenkozo okanye umda wesigaba ngexesha lobushushu obuphezulu bokwenza ukuguqulwa.