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试验用无间隙原子钢-IF(/%:0.0036~0.004 9C,0.005~0.007Si,0.11~0.12Mn,0.007P,0.005S,0.007~0.011Alt,0.047~0.051Ti,0.003 0N,0~0.003 7Ce)由10 kg真空感应炉熔炼,锻成30 mm× 25 mm方坯,终锻950℃,空冷.通过Gleeble-1500D热模拟试验机对试验钢在750~1 150℃进行应变速率0.1s-1的拉伸试验,研究微量稀土Ce对该IF钢高温拉伸性能的影响.与不含Ce的IF钢相