Abstract
Three different tempering temperature were designed to investigate the effect of tempering temperature on microstructure, tensile behavior and hydrogen embrittlement sensitivity in a V-containing low alloy high strength steel. Results showed that with increasing tempering temperature, on one hand, the steel displayed decrease in strength and increase in ductility as usual, on the other hand, the susceptibility to hydrogen-induced embrittlement reduced on the same precharging hydrogen condition. These changes on properties were explained from their microstructure variation observed by X-ray diffraction (XRD) and electron backscatter diffraction (EBSD).
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