Msamahaafter quenching, martensite and retained austenite is unstable, they have a spontaneous organization transformation trend to stability, such as the supersaturated carbon in martensite to precipitate residual austenite decomposition in order to promote the shift, such as for tempering tempering is a non-equilibrium organization to balance the organization's processes, this process depend on the atomic migration and diffusion of this authorization together with your Kukamilika kwa joto la moto ni kubwa, kasi ya utengamano wa haraka; badala yake, na kuongezeka kwa joto la joto, muundo wa kuzima wa msamaha utapitia mabadiliko kadhaa. Kulingana na hali ya mabadiliko ya muundo wa kipaza sauti, tempering kwa ujumla imegawanywa katika hatua nne: mtengano wa martensite, mtengano wa mabaki ya austenite, ukuaji wa mkusanyiko wa carbide na recrystallization ya ferrite.
Hatua ya kwanza (200)
(1) Kuuguatempering martensite decompose under 80 temperature tempering, quenching steel without Ming S organization transformation, the occurrence of carbon in martensite only partial, and no starts to break down in the 80-200 tempering, martensite begins to decompose, precipitate extremely subtle carbides, reduce the mass fraction of martensite in carbon forgings in this stage, due to the low tempering temperature, martensitic precipitation only part of Atomi za kaboni zilizo na supersaturated, kwa hivyo bado ni kaboni katika suluhisho thabiti la Supersaturated hali ya hewa ya usambazaji mzuri sana wa carbide katika matrix ya martensite. Muundo uliochanganywa wa martensite ya chini ya kueneza na carbide nzuri sana huitwa hasira martensite.

(2)KuuguaKukasirika katika hatua ya pili (200-300), mtengano wa mabaki ya austenite wakati hali ya joto iliongezeka hadi 200-300, mtengano wa martensite uliendelea, lakini mabadiliko makubwa ni mabaki ya austenite ya kutengana kwa eneo la kusongesha kwa sehemu ya kaboni, na kwa njia ya sehemu ya kaboni, na kwa sehemu ya sehemu ya kaboni, na kueneza kwa sehemu ya kaboni, na kubadilika kwa sehemu ya kaboni, na kutengenezea kwa sehemu ya kaboni, na kutengenezea kwa sehemu ya kaboni, na kutengenezea austenite ampomposise, alphed amesed aepcute am am carm, ampompise incut am am carcute am ampompise a pheses amesed am a formused age am a alpresed age am am carm am am am a. Uundaji wa ugumu wa chuma cha bainite sio dhahiri kupungua katika hatua hii
(3)Hatua ya tatu (250-400) mabadiliko ya carbide ya kutengeneza tenge ni katika kiwango hiki cha joto. Due to the high temperature,Carbon atom diffusion ability is stronger, the diffusion ability to recover iron atoms also, martensite decompose the transition of precipitation carbides and residual austenite decomposition will be turned into a relatively stable cementite with separation and transformation of carbides, the decrease of martensite in carbon mass fraction, martensite lattice distortion disappear, martensitic transformation for ferrite, get Usambazaji wa matritic ndani ya saruji ndogo ya granular au lamellar ya shirika, shirika linaloitwa Tempering kimsingi liliondoa awamu hii austenite kuzima mafadhaiko, ugumu, ugumu wa plastiki uliboreshwa

(4)The fourth stage of forging tempering (& GT;400) grew up carbide gathered and recrystallization of ferrite due to tempering temperature is very high, carbon and iron atoms have strong ability of proliferation, the third phase formation of cementite flakes will continuously spheroidizing and grew up in more than 500-600, alpha recrystallization occurs gradually, lose ferrite morphology of the original plate strip or sheet, na fomu ya usambazaji wa nafaka ya polygon kwenye shirika kama carbides ya matriti ya matritic, kikundi hicho kiliita sorbite iliyokasirika na mali nzuri ya mitambo ya awamu na upotoshaji wa kimiani huondoa mafadhaiko ya ndani.

（Kutoka 168 Kuunda Net）