孙福兆,董磊,郭滕滕,蔡大勇,廖波,张春玲

• 1:燕山大学继续教育学院
• 2:燕山大学亚稳材料制备技术与科学重点实验室

摘要(Abstract)：

基于热模拟试验数据,建立了Cu-P-Cr-Ni-Mo耐候钢的动态再结晶模型,并利用有限元软件Deform-3D对试验钢进行了热压缩过程以及微观组织的演变模拟。结果表明,在热压缩过程中,坯料内部存在不均匀变形,其心部大变形区的等效应变最大、温度最高,动态再结晶进行得最充分;不同工艺参数对动态再结晶体积分数与平均晶粒尺寸具有显著的影响,较高的变形温度、较低的应变速率和大应变均有利于动态再结晶的进行;试样不同区域的动态再结晶的体积分数随着应变的增大而升高,相应的平均晶粒尺寸随着应变的增加而减小。有限元软件Deform-3D模拟的微观组织演变规律与热模拟试验结果具有高度的一致性。

关键词(KeyWords)： Cu-P-Cr-Ni-Mo耐候钢;有限元模拟;动态再结晶;微观组织演变

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51104130);; 河北省自然科学基金(E2012203137)

作者(Author): 孙福兆,董磊,郭滕滕,蔡大勇,廖波,张春玲

DOI: 10.13289/j.issn.1009-6264.2016.07.036

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