1. Cov ferrite
Ferrite yog ib qho khoom sib xyaw ua ke tsim los ntawm carbon yaj hauv -Fe. Nws yog feem ntau qhia raws li los yog F.It tuav lub bulk centered cubic lattice qauv ntawm alpha -Fe.Ferrite muaj tsawg carbon cov ntsiab lus, thiab nws mechanical zog yog ze rau cov ntshiab hlau, siab plasticity thiab toughness, thiab tsawg zog thiab hardness.
2. Lub austenite
Austenite yog interstitial khoom tov ntawm carbon yaj nyob rau hauv -Fe, feem ntau qhia raws li los yog A.It tuav lub ntsej muag-centered cubic lattice qauv ntawm gamma-Fe.Austenite muaj ntau dua cov pa roj carbon solubility tshaj ferrite, thiab nws mechanical zog yog yus muaj los ntawm zoo plasticity. , tsis tshua muaj zog, tsis tshua muaj hardness thiab yooj yim yas deformation.

3. Cov cementite
Cementite yog ib tug compound tsim los ntawm hlau thiab carbon, nws cov tshuaj formula yog Fe3C.It muaj 6.69% carbon thiab muaj ib tug complex siv lead ua qauv.The cementite muaj ib tug heev hardness, tsis zoo plasticity, yuav luag xoom, thiab yog ib tug nyuaj thiab nkig theem. Cementite plays lub luag haujlwm ntxiv dag zog rau cov pa roj carbon steel.In hlau-carbon alloys, qhov siab dua cov ntsiab lus carbon, ntau cementite, siab dua qhov hardness thiab qis plasticity ntawm alloys.
4. Pearlite
Pearlite yog cov khoom sib xyaw ntawm ferrite thiab cementite, feem ntau qhia los ntawm P.Qhov nruab nrab cov ntsiab lus ntawm pearlite yog 0.77%, thiab nws cov khoom siv kho tshuab yog nruab nrab ntawm ferrite thiab cementite, nrog lub zog siab, nruab nrab hardness thiab qee yam plasticity. cementite tuaj yeem muab faib ua granular daim ntawv ntawm ferrite matrix. Cov qauv no yog hu ua spherical pearlite, thiab nws cov kev ua tau zoo dua.
5. Ledeburite
Leutenite yog ib qho kev sib xyaw ntawm austenite thiab cementite, feem ntau hais tias Ld.Qhov nruab nrab cov ntsiab lus ntawm Leutenite yog 4.3%. thiab cementite, hu ua leutenite ntawm qhov kub thiab txias, denoted los ntawm Ld '.Lub microstructure ntawm Leutenite yog raws li cementite, yog li nws cov khoom siv tshuab yog tawv thiab nkig.