Therser UK Blog

Understanding Martempering: A Specialised Heat Treatment Technique


Martempering, also referred to as quenching and tempering, is a specialized heat treatment technique utilized to enhance the strength, toughness, and wear resistance of materials. This intricate process entails heating the material to a precise temperature, maintaining it at that level for a specified duration to ensure uniform heating, and then swiftly cooling it in a quenching medium. Subsequently, the material undergoes tempering to diminish its brittleness and enhance its toughness.


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Martempering sets itself apart from traditional quenching by carefully controlling the cooling rate to prevent the formation of brittle martensite. Instead of rapidly cooling the material, it is brought down to just above the martensite start temperature and then held there, encouraging the formation of bainite. This unique microstructure offers superior ductility compared to martensite, making martempering a preferred choice for high-carbon steels and various ferrous alloys.

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