Mandal, Anup and Guguloth, K and Bandyopadhyay, T K (2016) Characterization of Microstructure and Mechanical Properties of 9.2Cr0.45V0.7C Heat-Resistant Steel. Metallography, Microstructure, and Analysis, 5(2) (IF-0.58). pp. 95-107.
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Microstructure and mechanical properties of 9.2Cr0.45V0.7C steel have been evaluated in this work. Differential scanning calorimetry study indicating the various phase changes during heating and cooling is consistent with high-temperature XRD analysis. Carbide precipitates are observed during tempering in the temperature range of 750–800 °C. Two types of precipitates are identified, MC-type precipitates with an average size of 50 ± 15 nm and M23C6-type precipitates with an average size of 150 ± 50 nm. The tensile properties of the steel are dependent on tempering and processing conditions. Room-temperature tensile properties increase with tempering temperature. The hot rolling is more effective than hot forging to improve tensile properties of the steel at room temperature. High-temperature tensile strength decreases, whereas elongation increases with increasing temperature. Conventional creep curve shows three stages of behavior for this steel at 60 MPa and 600 °C.
|Uncontrolled Keywords:||9Cr steel; Microstructure; Tempering; Precipitate; Tensile property; Creep|
|Divisions:||Material Science and Technology|
|Deposited By:||Dr. A K Sahu|
|Deposited On:||15 Nov 2017 16:47|
|Last Modified:||20 Nov 2017 11:54|
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