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中文摘要：
以便调查分发 Cu 和 Mg ，和钢的 Cu 在微观结构的效果，分别地，包含各种各样的 Cu 内容的锰钢是退火的 at1260,1100 和 1000 °C 在 thefurnace 为 1 h 并且随后冷却了到房间温度模仿结果显示的 pre-rolling anneal.The 那 Cu 不是在观察显示出的退火的 steels.The 扫描电子显微镜学( SEM )的 microscopicallysegregated 那 themain 微观结构由铁酸盐和珠泽铁组成； p
英文摘要：
In order to investigate the distribution of Cu and Mg, and the effect of Cu on the microstructure of steels, manganese steels containing various Cu contents were annealed at 1260, 1100 and 1000℃, respectively, for I h and subsequently cooled to room temperature in the furnace to simulate the pre-rolling anneal. The results indicate that Cu is not microscopically segregated in the annealed steels. The scanning electron microscopy （SEM） observation shows that the main microstructure consist of ferrite and pearlite; the percentage of pearlite in the steels increases with increasing Cu content. The grain size reduces with the decrease of the annealing temperature. The results of energy dispersive X-ray analysis （EDXA） suggest that Cu content in pearlite is higher than that in ferrite, demonstrating that the microstructure-segregation of Cu occurred. However, the cast specimens show that Cu content in MnS and S-rich phases is high. In addition, Cu of 0.2%-0.4% could improve the distribution of MnS and S-rich inclusions. The optimal Cu content in steels and the optimal annealing temperature between 1100-1200℃ were determined.
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