Analysis of Abnormal Impact Energy of S32750 Steel Head
For the phenomenon of low impact energy of S32750 dual-phase steel head after forming,the reasons were analyzed through chemical composition analysis,mechanical property testing,pitting corro-sion test,microstructure observation and other methods.The results showed that the main reason for the low impact energy of S32750 dual-phase steel head after forming was that the low solid solution temperature led to the precipitation of brittle phase σ in the dual-phase microstructure.By increasing the solid solution temperature to 1 100 ℃ to avoid the σ-phase precipitation,the impact energy met the technical require-ments of the product.
headS32750 super dual-phase steelimpact energymicrostructuresolid solution treatment
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