优化控冷制度改善X120管线钢的组织和性能

1.北京科技大学高效轧制国家工程研究中心,北京,100083

2.北京科技大学高效轧制国家工程研究中心,北京,100083

3.北京科技大学高效轧制国家工程研究中心,北京,100083

4.北京科技大学高效轧制国家工程研究中心,北京,100083

5.鞍钢技术中心

THE EFFECTS OF CONTROLLED COOLING ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF HIGH GRADE PIPELINE STEELS X120

研究了热轧后四种不同的冷却制度对X120级管线用钢组织、性能的影响.结果表明,该管线钢在相同的控轧制度下,以冷速61℃/s、终冷温度370℃的冷却制度,能得到以贝氏体为主且强度和韧性均达到X120各项性能指标的组织.

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