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Effects of Bainite Isothermal Temperature on Microstructure and Mechanical Properties of a δ-TRIP Steel
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AbstractIn this work, the microstructure, properties and retained austenite characteristics of a δ-TRIP steel containing 3.0% Al at different isothermal temperatures in the bainite region were researched by means of scanning electron microscopy, tensile test and XRD. The evolution of austenite and the effect on microstructure and mechanical properties were investigated. The results show that the high Al element in δ-TRIP steel can effectively inhibit the precipitation of carbides in austenite and obtain more stable austenite which can lead to an excellent combination of elongation and tensile strength. When the isothermal temperature is 400 °C, the comprehensive mechanical properties are the best, the tensile strength reaches 800 MPa, and the elongation exceeds 40%.
Title: Effects of Bainite Isothermal Temperature on Microstructure and Mechanical Properties of a δ-TRIP Steel
Description:
AbstractIn this work, the microstructure, properties and retained austenite characteristics of a δ-TRIP steel containing 3.
0% Al at different isothermal temperatures in the bainite region were researched by means of scanning electron microscopy, tensile test and XRD.
The evolution of austenite and the effect on microstructure and mechanical properties were investigated.
The results show that the high Al element in δ-TRIP steel can effectively inhibit the precipitation of carbides in austenite and obtain more stable austenite which can lead to an excellent combination of elongation and tensile strength.
When the isothermal temperature is 400 °C, the comprehensive mechanical properties are the best, the tensile strength reaches 800 MPa, and the elongation exceeds 40%.
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