Forgingska mor'a quenching, martensite le bolokoa austenite e sa tsitsang, ba na le ho itlelang feela mokhatlo o hlophisitsoeng phetoho tšekamelo ea ho botsitso, tse kang supersaturated carbon ka martensite ho precipitate residual austenite decomposition e le ho ntšetsa pele phetoho, tse kang bakeng sa tempering tempering ke mokhatlo o sa leka-lekaneng. ho leka-lekanya lits'ebetso tsa mokhatlo, ts'ebetso ena e itšetlehile ka phallo ea athomo le ho hasana ha tumello ena hammoho le mocheso oa hau o phethiloeng oa mollo o phahame, lebelo la ho hasana ka potlako; Ho fapana le hoo, ka ho eketseha ha mocheso oa mocheso, mohaho o timang oa forgings o tla kena letoto la liphetoho.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) forgingmartensite e chesang e senyeha ka tlas'a mocheso oa mocheso oa 80, ho tima tšepe ntle le phetoho ea mokhatlo oa Ming S, ho hlaha ha carbon ka martensite e leeme feela, 'me ha ho na ho qala ho senyeha ha mocheso oa 80-200, martensite e qala ho bola, ho fokotsa li-carbides tse poteletseng haholo, ho fokotsa Karolo e kholo ea martensite ka har'a carbon forgings mothating ona, ka lebaka la mocheso o tlase oa mocheso, pula ea martensitic ke karolo feela ea liathomo tsa carbon tse supersaturated, kahoo e ntse e le khabone ka ho - Fe supersaturated solid solutionHo na pula ea 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)forgingho chesa mothating oa bobeli (200-300), ho bola ha austenite ha mocheso o nyolohela ho 200-300, ho bola ha martensite ho ile ha tsoela pele, empa phetoho e ka sehloohong ke ho bola ha austenite e setseng ea ho bola ha austenite e ne e le ka ho atolosoa ha liathomo tsa carbon. ho theha sebaka se sa fellang, ebe se qhibiliha ho ba karolo ea alpha le motsoako oa mokhatlo oa carbide, e leng ho thehoa ha 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 sebakeng sena sa mocheso.Ka lebaka la mocheso o phahameng, matla a phallo ea athomo ea Carbon a matla, 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 austenite e tla fetoloa samente e tsitsitseng e nang le karohano le phetoho ea li-carbides, ho fokotseha. ea martensite ka carbon boima karoloana, martensite lattice khopameng nyamela, martensitic phetoho bakeng sa ferrite, fumana ferritic matrix kabo ka hare ho nyenyane granular kapa lamellar cementite mokhatlo o hlophisitsoeng, mokhatlo o bitsoang tempering ha e le hantle felisa mohato ona austenite quenching khatello ea kelello, ho thatafala, plasticity toughness e ile ea ntlafatsoa.

(4)Mokhahlelo oa bone oa forging tempering (& GT;400) o holile carbide e bokelletsoeng 'me ea recrystallization ea ferrite ka lebaka la mocheso oa mocheso o phahame haholo, liathomo tsa k'habone le tšepe li na le bokhoni bo matla ba ho ata, karolo ea boraro ea sebopeho sa cementite flakes e tla tsoela pele ho spheroidizing le ho hola. holimo ho feta 500-600, alpha recrystallization e etsahala butle-butle, e lahleheloa ke morphology ea ferrite ea letlapa la pele kapa lakane, 'me e theha kabo ea lijo-thollo tsa polygon mokhatlong e le ferritic matrix granular carbides, sehlopha se bitsoang tempering sorbite tempered sorbite e nang le mekhoa e metle ea mochine. thepa ea ho sotha mohato le lattice felisa khatello ea kelello ka hare.

(ho tloha ho 168 ho theha marang-rang)