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Effect of Solution Heat Treatment on Microstructure and Properties of CoCrMo Alloy
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Effect of Solution Heat Treatment on Microstructure and Properties of CoCrMo Alloy
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Journal Article
Effect of Solution Heat Treatment on Microstructure and Properties of CoCrMo Alloy
2025
Overview
The as-cast microstructure of low carbon CoCrMo alloy was studied by means of optical microscope, scanning electron microscope and tensile tester, and the microstructure and properties after heat treatment for 30min, 60min and 120min at 1150 °C, 1200 °C and 1250 °C were studied. The results show that the element segregation and M23C6 content in the alloy are decreased by solution treatment. The tensile strength and plasticity of the alloy increase with the increase of solution time. At 1250 °C, the tensile strength and plasticity of the alloy increase first and then decrease with solution temperature and solution time. The element segregation in the alloy is serious, and with the increase of holding temperature and time, the element segregation of Mo decreases. Solid solution heat treatment at 1150 °C and 1200 °C reduces the segregation and carbides decompose and disperse uniformly into the matrix, which improves the strength and plasticity of the alloy. However, at 1250 °C/120min, the growth of grains makes the strength and plasticity of the alloy decrease.
Publisher
IOP Publishing
