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利用Gleeble1500D热模拟试验机,对开发的Q370qE—HPS高性能桥梁钢(/%:0.09C,0.36Si,1.33Mn,0.013P,0.004S,0.036Nb,0.015Ti,0.022Als,0.33CEV)230mm×1400mm连铸坯进行700—1050℃的热塑性试验研究。结果表明,Q370qE—HPS高性能桥梁钢800~1050oC为高塑性区间,与传统正火工艺桥梁钢Q370qE(/%:0.14C,0.38Si,1.45Mn,0.012P,0.004S,0.028Nb,0.0