马立峰,徐海洁,贾伟涛,刘鹏涛

• 1:太原科技大学山西省冶金设备设计理论与技术重点实验室
• 2:吉林大学超塑性与塑性研究所

摘要(Abstract)：

在压下量为10%~40%、轧制速度为0.1~0.8 m/s、初轧温度为250~400℃条件下对AZ31B镁合金进行轧制实验,对轧后镁板的微观组织和力学性能进行综合研究。引入Zener-Hollomon参数,综合考虑初轧温度T、变形速率ε,建立平均晶粒尺寸预测模型;对轧后镁板抗拉强度与平均晶粒尺寸关系进行非线性拟合解析,建立抗拉强度数学模型,基于上述模型建立AZ31B镁合金热轧后组织性能预测模型。结果表明,轧后镁板微观平均晶粒尺寸与宏观抗拉性能存在较强相关性,解析精确度取决于轧前工艺参数的制定,精确求解变形速率ε可有效提高晶粒尺寸及抗拉强度的预测精度;AZ31B镁合金热轧后组织性能预测模型既能指导热轧前设计最优的轧制制度,又能根据轧前工艺参数在线检测进行热轧后镁板组织及性能的综合评估。

关键词(KeyWords)： AZ31B镁合金;组织性能;热轧轧制制度;预测模型

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51105264);; 中国博士后科学基金(2012M520677);; 山西省攻关(20130321010-03);; 山西省高校青年学术带头人计划资助(TYAL);; 太原科技大学研究生科技创新项目(20145005)

作者(Author): 马立峰,徐海洁,贾伟涛,刘鹏涛

DOI: 10.13289/j.issn.1009-6264.2015.09.042

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