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以高强度X100管线钢为研究对象,通过热模拟试验机Gleeble-1500对其进行单道次压缩试验,测得X100管线钢的应力-应变曲线,研究了应变速率、变形温度等热变形参数对X100管线钢变形抗力和组织性能的影响。试验结果表明,选择合适的应变速率和变形温度,可以得到细小均匀组织。与传统管线钢相比,X100管线钢显微组织主要为粒状贝氏体,且更为细小,具有更高的强度和韧性。合适的变形温度为1000℃,变形速率为5 s-1。
Taking high strength X100 pipeline steel as the research object, the single pass compression test was carried out on a hot simulation test machine Gleeble-1500 to measure the stress-strain curve of X100 pipeline steel. The effects of thermal deformation parameters such as strain rate and deformation temperature X100 pipeline steel deformation resistance and the impact of organizational performance. The experimental results show that the fine uniform structure can be obtained by choosing proper strain rate and deformation temperature. Compared with the traditional pipeline steel, X100 pipeline steel microstructure mainly granular bainite, and more small, with higher strength and toughness. The suitable deformation temperature is 1000 ℃ and the deformation rate is 5 s-1.