Effect of Tempering Process on Microstructure and Mechanical Properties of Low Alloyed Cast Steel

Abstract:

The effect of tempering process on the microstructure and properties of low alloyed cast steel was studied. The results show that tempered at (200~400)°C, the M/A island of the granular bainite decomposes and carbide precipitates. When the tempering temperature rises to (500~600)°C, the M/A island is completely decomposed, and the carbide aggregates and gradually spheroidizes. With the increasing of tempering temperature, the tensile strength increases first and then decreases, elongation and impact energy show a trend of increasing at first, then decreasing and then increasing. The tempering brittleness occurs at 400°C.

• Periodical: Key Engineering Materials (Volume 871)
• Pages: 40-45
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.871.40
• Online since: January 2021
• Authors: Hui Ji Fan*, Bo Chen, Jun Wen, Xin Jin
• Keywords: Cast Steel Structure, Low Alloy, Mechanical Properties, Tempering Process

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