| 1 | 阿亨大学钢铁冶金研究所有关CO_(2)问题和废料再循环领域的研究工作显示文摘介绍了有关深海中干冰块的试验和计算,提到了地下煤气化时CO2的用途,以及用CO2溢流三级操作来提高石油产量.介绍了向电弧炉中混合喷吹CO2和煤、焦或直接还原细粉的新工作.研究了高炉喷吹煤、粉矿或粉尘.对竖炉中喷吹热还原气体和粉状固体燃料进行了比较,其中热还原气体可由煤发生或废料气化或炉顶煤气.讨论了喷吹塑料,汽车燃油系统的轻馏焦和电厂灰中的未燃尽碳的试验结果.除在H2沸腾炉生产直接还原铁之外,还讨论了在回转窑或密闭竖炉中,研究矿/煤,粉尘/煤球团或团块的还原行为结果. | H.W.Gudenau D.Senk O.S.Kweon C.Frohling T.Wieting S.Wang | 2003 | 钢铁2003，，z1： | 1 |
| 2 | Effect of Tempcore Processing on Mitigating Problems of Tramp Elements in Low C Steel Produced from Recycled Material显示文摘The effect of tramp elements in the steel was intensively studied.It was found that the solubility of tramp elements decreased as the temperature decreased under normal cooling conditions.The tramp elements(Cu,Pb,and Sn)diffused toward the grain boundaries,and intermetallic compounds or rich phases which have low melting points were formed,causing reduction in ductility and failure during the bending test.Rebars with Cu content which were left to air cooling after the last step showed drop in elongation,up to 32%.On contrast,the samples with high percentage of tramp elements(Cu,Pb,and Sn)in the billet,which were rolled and subjected to Tempcore process,did not show drop in elongation or failure in bending test(especially for rebar with diameter less than 32mm);however,copper must be less than 0.35mass%to prevent the precipitation of Cu-rich zones of critical size in 32 mm.When quenching was applied,the tramp elements remained in the interstitial supersaturated solid solution positions inside the grains and would not have the chance to diffuse and form precipitates,hindering the copper precipitates from reaching the critical size necessary for impairing the properties.This would hinder the occurrence of the harmful effect of the tramp elements on the elongation or the hot shortness after rolling. | Ahmed RAMADAN A.Y.SHASH I.S.EL-MAHALLAWI D.SENK Taha MATTAR | 2015 | Journal of Iron and Steel Research(International)2015，22，7： | 0 |
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