杨洪波,孙佳通,赵贺然,王豪,亓伟伟

• 1:西安建筑科技大学冶金工程学院
• 2:山东钢铁股份有限公司莱芜分公司技术中心

摘要(Abstract)：

利用Gleeble 3800热模拟实验机分别获得了Ti-Mo铁素体基微合金钢在静态和动态经不同速率冷却后的温度-膨胀量曲线，结合金相法绘制了Ti-Mo微合金钢的连续冷却转变(CCT)曲线。结果表明：无论是静态CCT还是动态CCT,随着冷却速率的增大，实验钢的珠光体与铁素体均减少，贝氏体体积分数增加，当冷却速率达到30℃/s时，组织全部为贝氏体。实验钢铁素体相变的开始温度为800℃,压缩变形扩大了珠光体相区使其向左扩张，缩小了贝氏体相区，并降低铁素体转变开始温度。在制定控轧控冷工艺时，为了使实验钢在卷取过程中获得铁素体+粒状贝氏体组织，从而进一步优化强韧性能，建议Ti-Mo铁素体基微合金钢终轧温度应高于800℃,轧后冷却速率应高于30℃/s,并且要在贝氏体相变高温区完成卷取。

关键词(KeyWords)： Ti-Mo微合金钢;CCT;微观组织;冷却速率;维氏硬度

Abstract:

Keywords:

基金项目(Foundation): 陕西省自然科学基础研究计划资助项目(2021JM369)

作者(Author): 杨洪波,孙佳通,赵贺然,王豪,亓伟伟

DOI: 10.13289/j.issn.1009-6264.2022-0611

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