Aimin Guo, Xinli Song, Jinquan Tang, and Zexi Yuan, Effect of tempering temperature on the mechanical properties and microstructure of an copper-bearing low carbon bainitic steel, J. Univ. Sci. Technol. Beijing, 15(2008), No. 1, pp. 38-42. https://doi.org/10.1016/S1005-8850(08)60008-0
Cite this article as:
Aimin Guo, Xinli Song, Jinquan Tang, and Zexi Yuan, Effect of tempering temperature on the mechanical properties and microstructure of an copper-bearing low carbon bainitic steel, J. Univ. Sci. Technol. Beijing, 15(2008), No. 1, pp. 38-42. https://doi.org/10.1016/S1005-8850(08)60008-0
Aimin Guo, Xinli Song, Jinquan Tang, and Zexi Yuan, Effect of tempering temperature on the mechanical properties and microstructure of an copper-bearing low carbon bainitic steel, J. Univ. Sci. Technol. Beijing, 15(2008), No. 1, pp. 38-42. https://doi.org/10.1016/S1005-8850(08)60008-0
Citation:
Aimin Guo, Xinli Song, Jinquan Tang, and Zexi Yuan, Effect of tempering temperature on the mechanical properties and microstructure of an copper-bearing low carbon bainitic steel, J. Univ. Sci. Technol. Beijing, 15(2008), No. 1, pp. 38-42. https://doi.org/10.1016/S1005-8850(08)60008-0
The effect of tempering temperature on the microstructure and mechanical properties of ultra-high strength, copperbearing, low-carbon bainitic steel has been investigated in the experiment. The results showed that the microstructure was mainly the laths of bainite in the as-quenched steel. The bainitic laths were restored and combined after the steel tempered at various temperatures. There were rnartensite/austenite (M/A) islands and numerous dislocations within and between the bainitic laths, while very t-me precipitates of ε-Cu were also observed within the laths. With increasing the tempered temperature from 400 to 600℃, the yield strength (YS) increased from 877 to 957 MPa, whereas the ultimate tensile strength (UTS) decreased from 1020 to 985 MPa. The Charpy V-notch (CVN) varied from 68.5 to 42 J, and the value was minimal for the steel tempered at 500℃.
The effect of tempering temperature on the microstructure and mechanical properties of ultra-high strength, copperbearing, low-carbon bainitic steel has been investigated in the experiment. The results showed that the microstructure was mainly the laths of bainite in the as-quenched steel. The bainitic laths were restored and combined after the steel tempered at various temperatures. There were rnartensite/austenite (M/A) islands and numerous dislocations within and between the bainitic laths, while very t-me precipitates of ε-Cu were also observed within the laths. With increasing the tempered temperature from 400 to 600℃, the yield strength (YS) increased from 877 to 957 MPa, whereas the ultimate tensile strength (UTS) decreased from 1020 to 985 MPa. The Charpy V-notch (CVN) varied from 68.5 to 42 J, and the value was minimal for the steel tempered at 500℃.
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