austenite sentence in Hindi
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- This is due to the fact that the steel will change from the austenite phase to the martensite phase after quenching.
- Such austenite is highly unstable and, if given enough time, will precipitate into various microstructures of ferrite and cementite.
- The more open structure of the austenite is then able to absorb carbon from the iron-carbides in carbon steel.
- The temperature range for transformation of austenite to bainite ( 250 550 �C ) is between those for pearlite and martensite.
- ISA can be contacted through its Secretariat, c / o PT Tira Austenite at telephone number 4602594 and fax number 4602593.
- When cooled very quickly, during a martensite transformation, the austenite grain-size directly affects the martensitic grain-size.
- Two common cases of this include cooling a liquid to form an amorphous solid, and cooling eutectoid austenite to form martensite.
- In metallurgy, a picric acid etch has been commonly used in optical metallography to reveal prior austenite grain boundaries in ferritic steels.
- After heating the steel to the austenite phase and then quenching it in water, the microstructure will be in the martensitic phase.
- Further, it occurs without the diffusion of either substitutional or interstitial atoms and so martensite inherits the composition of the parent austenite.
- In steel, the carbon begins to mix with gamma iron at the A 3 temperature, forming a solid solution called austenite.
- However, if the austenite is cooled quickly enough, the transformation may be suppressed for hundreds of degrees below the lower critical temperature.
- When martensite is reverted to austenite by heating, the original austenitic structure is restored, regardless of whether the martensite phase was deformed.
- The metal part is then removed from the bath and cooled in air to room temperature to permit the austenite to transform to martensite.
- The austenite of Hadfield steels is thermodynamically unstable and will transform into martensite when subject to mechanical impact thus forming the hard surface layer.
- It resembles an inverted eutectic, with the ? phase combining with the liquid to produce pure austenite at and 0.17 % carbon.
- The martensitic reaction begins during cooling when the austenite reaches the martensite start temperature ( M s ) and the parent austenite becomes mechanically unstable.
- The martensitic reaction begins during cooling when the austenite reaches the martensite start temperature ( M s ) and the parent austenite becomes mechanically unstable.
- A higher austenitization temperature can produce a higher carbon content in austenite, whereas a lower temperature produces a more uniform distribution of austempered structure.
- On the other hand, such elements as silicon, molybdenum, and chromium tend to de-stabilize austenite, raising the eutectoid temperature.
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