In order to integrate the"dual carbon"concept into experimental teaching and cultivate"dual carbon"talents,a micro spherical indentation testing device for high temperature has been developed and built.The testing device includes three parts:a room temperature indentation testing module,a heating temperature control system,and an insulation structure,it can achieve indentation testing from room temperature to 300 ℃.After heating the temperature control system and maintaining a constant temperature,multiple loading and unloading cycles are performed to obtain the corresponding compression load displacement curve at the corresponding temperature.The stress-strain curve is fitted using calculation software and the yield strength and tensile strength are calculated,achieving correlation with conventional high-temperature tensile experiments.After conducting tests on Q345 steel block specimens at room temperature to 300 ℃,the corresponding yield strength and tensile strength are obtained.The results are compared with the standard tensile curve,and the errors are within a reasonable range.
high temperatureindentationtesting devicemechanical property
维普
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