GB/T 38720-2020
ActiveMicrostructure examination of medium-carbon steel and medium-carbon alloy structural steel after quenching
中碳钢与中碳合金结构钢淬火金相组织检验
Application Summary AI generated
This standard specifies the metallographic examination methods for evaluating the microstructure of medium-carbon and medium-carbon alloy structural steels after quenching. It is primarily applied in the heat treatment and quality control processes within the machinery manufacturing industry, particularly for assessing the effectiveness of quenching treatments on components such as gears, shafts, and connecting rods. The standard provides criteria for identifying acceptable microstructures, like martensite, and detecting defects like ferrite or bainite, ensuring mechanical properties meet design requirements.
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