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.
关键词
封头/S32750超级双相钢/冲击功/显微组织/固溶
Key words
head/S32750 super dual-phase steel/impact energy/microstructure/solid solution treatment
维普
万方数据