bainite वाक्य
उदाहरण वाक्य
मोबाइल
- The microstructures of martensite and bainite at first seem quite similar.
- Bainite is an intermediate of pearlite and martensite in terms of hardness.
- TRIP steels use higher quantities of carbon than ferrite / bainite formation.
- They are also added to avoid formation of carbide in the bainite region.
- If cooled even faster, bainite will form.
- Depending on the holding-temperature, austempering can produce either upper or lower bainite.
- A fine non-lamellar structure, bainite commonly consists of cementite and dislocation-rich ferrite.
- Upper bainite is a laminate structure formed at temperatures typically above and is a much tougher microstructure.
- However, greater undercooling by rapid quenching results in formation of martensite or bainite instead of pearlite.
- Under a light microscope, the microstructure of bainite appears darker than martensite due to its low reflectivity.
- This distinction arises from the diffusion rates of carbon at the temperature at which the bainite is forming.
- There is some controversy over the specifics of bainite's transformation mechanism; both theories are represented below.
- Unlike pearlite, whose formation involves the diffusion of all atoms, bainite grows by a displacive transformation mechanism.
- The high concentration of dislocations in the ferrite present in bainite makes this ferrite harder than it normally would be.
- The temperature range for transformation of austenite to bainite ( 250 550 �C ) is between those for pearlite and martensite.
- Bainite is a similar structure with lamellae much smaller than the wavelength of visible light and thus lacks this pearlescent appearance.
- Lower bainite is a needle-like structure, produced at temperatures below 350 �C, and is stronger but much more brittle.
- A semi-tempered middle ring of martensite and bainite, and 3 . a mild circular core of bainite, ferrite and pearlite.
- A semi-tempered middle ring of martensite and bainite, and 3 . a mild circular core of bainite, ferrite and pearlite.
- As a result of the transformation, the microconstituents, Pearlite and Bainite, form; Pearlite forms at higher temperatures and bainite at lower.
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