Effects of sample preparation method on the tensile testing results of ultra-high strength steel 300M at room temperature
The effects of four different sample preparation methods on the room temperature tensile testing results of 300M ultra-high strength steel was studied.The results showed that:the semi-finished M12×Φ6 sample was turned into a blank,then heat treated,and finally ground into a finished sample with a diameter of Φ5.0.The room temperature tensile strength index was the lowest and the plasticity index was the highest,which can maximize the characterization of the material's mechanical properties;This preparation method should be used to produce room temperature tensile test specimens of 300M ultra-high strength steel.The other three preparation methods have higher strength indicators and cannot accurately characterize the mechanical properties of the material itself.
sample preparation methods300Mtensile testing at room temperature
NETL
NSTL
万方数据
