Mekhatloka mor'a ho tima, martensite le ho boloka austenite ha e tsitsa, ba na le mokhoa o ikemetseng oa phetoho ea mokhatlo ho ea ho botsitso, joalo ka carbon supersaturated martensite ho fokotsa ho senyeha ha austenite e le ho khothalletsa phetoho, joalo ka ho halefisa ke mokhatlo o sa leka-lekaneng ho leka-lekanya ts'ebetso ea mokhatlo le ts'ebetso ea ho falla ha mokhatlo. phethile mocheso oa mollo o phahame, lebelo la ho hasana ka potlako; Ho fapana le hoo, ka ho eketseha ha mocheso oa mocheso, mohaho oa ho tima oa forgings o tla ba le liphetoho tse ngata. Ho ea ka boemo ba phetoho ea microstructure, tempering ka kakaretso e arotsoe ka mekhahlelo e mene: martensite decomposition, residual austenite decomposition, carbide accumulation growth le ferrite recrystallization.
Mohato oa pele (200)
(1) forgingtempering martensite decompose tlas'a 80 mocheso tempering, quenching tšepe ntle Ming S mokhatlo o hlophisitsoeng phetoho, ketsahalo ea carbon ka martensite leeme feela, 'me ha ho qala ho senya ka 80-200 tempering, martensite qala ho bola, precipitate carbides poteletseng ka ho fetisisa, fokotsa karolo e khōlō ea martensite ka martensite ka lebaka la mocheso oa carbon ka lebaka la karolo e fokolang feela ea mocheso, mocheso oa mocheso o tlaase, ho fokotsa mocheso o fokolang feela. ea liathomo tsa carbon tse nang le supersaturated, kahoo e ntse e le carbon in a - Fe supersaturated solid solutionMorero oa carbide e ntle haholo e ajoa ka mokhoa o ts'oanang ka har'a matrix ea martensite. Sebopeho se tsoakiloeng sa Martensite e tlaase le carbide e ntle haholo e bitsoa tempered Martensite.

(2)forgingtempering mothating oa bobeli (200-300), ho bola ha austenite e setseng ha mocheso o nyolohela ho 200-300, ho senyeha ha martensite ho ile ha tsoela pele, empa phetoho e ka sehloohong ke ho senyeha ha austenite ho senyeha ha masala a austenite e ne e le ka ho atolosoa ha liathomo tsa carbon ho theha sebaka se senyehileng sa carphase, 'me ho theha karolo e sa tšoaneng ea carphase, le ho theha sebaka se arohaneng. ho thehoa ha boima ba tšepe ea bainite ha ho hlakile hore ho fokotseha sethaleng sena
(3)Mokhahlelo oa boraro (250-400) oa phetoho ea carbide ea forging tempering e boemong bona ba mocheso. Ka lebaka la mocheso o phahameng, matla a phallo ea athomo ea Carbon a matlafala, matla a phallo ea ho khutlisa liathomo tsa tšepe hape, martensite e senya phetoho ea li-carbides tsa pula le ho bola ha masala a masala a tla fetoloa samente e tsitsitseng e nang le karohano le phetoho ea li-carbides, ho fokotseha ha martensite ka har'a martensite ea martensite ea martensite ea martensite ea martensite e nyamelang karoloana ea martensite ea martensite ea martensite e nyamelang. ferrite, fumana ferritic matrix kabo ka hare ho e nyenyane granular kapa lamellar cementite ea mokhatlo o hlophisitsoeng, mokhatlo o bitsoang tempering ha e le hantle o ile a felisa mohato ona austenite quenching khatello ea kelello, thata, plasticity toughness e ile ea ntlafatsoa.

(4)Mokhahlelo oa bone oa forging tempering (& GT; 400) hōla carbide bokella 'me recrystallization ea ferrite ka lebaka la tempering mocheso ke phahameng haholo, k'habone le tšepe liathomo na le matla a matla a ho ata, karolo ea boraro sebopeho sa cementite flakes tla tsoela pele spheroidizing le hōletse ka ho feta 500-600, alpha lakane ea crystals ho hlobolisa butle-butle le letlapa la ferrite le hlaha. kabo ea lijo-thollo tsa polygon mokhatlong o hlophisitsoeng joalo ka ferritic matrix granular carbides, sehlopha se bitsoang tempering sorbite tempered sorbite e nang le thepa e ntle e akaretsang ea mokhahlelo oa mokhahlelo le ho kheloha ha lattice ho felisa khatello ea maikutlo.

(ho tloha ho 168 ho theha marang-rang)