张红梅,王宏斌,刘振宇,刘相华,王国栋

• 1:辽宁科技大学
• 2:东北大学轧制技术及连轧自动化国家重点实验室 辽宁沈阳110006
• 3:辽宁科技大学
• 4:东北大学轧制技术及连轧自动化国家重点实验室

摘要(Abstract)：

以微合金管线钢X70为研究对象,在Gleeble1500热模拟机上,进行了不同形变量和冷却速度对合金相变行为及组织细化影响的研究。实验结果表明,形变量和冷却速度的增加,有助于针状铁素体的形成及细化。管线钢中针状铁素体组织典型的形貌为非常微细的亚结构、高位错密度以及部分细板条铁素体,基体上弥散分布着M/A岛和渗碳体。同时可以观察到在铁素体晶粒边界和铁素体晶粒内部有相的析出。可见,针状铁素体组织细化的机制主要有形变诱导铁素体、铁素体的动态再结晶和相的析出抑制晶粒长大。

关键词(KeyWords)： 晶粒细化;针状铁素体;岛状组织;析出相

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 张红梅,王宏斌,刘振宇,刘相华,王国栋

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