钒颗粒增强AZ31镁基复合材料热压缩数值模拟  

Numerical Simulation of Hot Compression of Vanadium Particle Reinforced AZ31 Magnesium Matrix Composite

作　　者：陈圣超 张弘斌[1] 周海萍 孙家文 阮奥琪 CHEN Shengchao;ZHANG Hongbin;ZHOU Haiping;SUN Jiawen;RUAN Aoqi(College of Mechanical and Electronic Engineering,Shandong University of Science and Technology,Qingdao 266590,Shandong,China;Shandong Iron and Steel Group Rizhao Co.,Ltd.,Rizhao 276806,Shandong,China)

机构地区：[1]山东科技大学机械电子工程学院,山东青岛266590 [2]山东钢铁集团日照有限公司,山东日照276806

出　　处：《实验室研究与探索》2025年第3期26-30,60,共6页Research and Exploration In Laboratory

基　　金：山东省自然科学基金面上项目(ZR2023ME227)。

摘　　要：为了探究粉末冶金制备的钒颗粒(V_(P))增强AZ31(V_(P)/AZ31)镁基复合材料在热加工过程中的动态再结晶行为及动力学特性,并优化V_(P)/AZ31镁基复合材料的锻造工艺参数,使用Gleeble-3500C型热模拟试验机对粉末冶金制备的V_(P)/AZ31镁基复合材料进行热压缩实验。根据热压缩实验所得应力应变数据,建立动态再结晶临界应变模型以及动态再结晶动力学模型。通过DEFORM-3D有限元软件建模,并引入V_(P)/AZ31镁基复合材料动态再结晶临界应变模型以及动态再结晶动力学模型,对V_(P)/AZ31镁基复合材料的热压缩过程进行有限元分析。结果表明,试样中心区域动态再结晶程度较高,较高的温度以及较低的应变速率能够促进动态再结晶的发生。模拟与实验数据具有较高的一致性,验证了所建立模型的有效性。Vanadium particle-reinforced AZ31(V_(P)/AZ31)Mg matrix composites were fabricated via powder metallurgy and subsequently subjected to hot compression testing using the Gleeble-3500C thermal simulation machine.The tests were performed under temperatures varying from 250℃to 400℃and strain rates from 0.001 s^(-1) to 1 s^(-1).True stress-true strain data were collected and analyzed to understand their relationship with the thermal deformation parameters.Subsequently,the dynamic recrystallization kinetics model and the critical strain model for V_(P)/AZ31 magnesium matrix composites were established.Modeling was conducted using DEFORM-3D software,incorporating the critical strain and dynamic recrystallization kinetics models to perform finite element analysis of the hot compression process for V_(P)/AZ31 magnesium matrix composites.The study revealed a higher degree of dynamic recrystallization in the central region of the compressed samples.Additionally,higher temperatures and lower strain rates were found to promote dynamic recrystallization.The simulation and experimental data demonstrate a high degree of consistency,indicating that the new model is quite accurate.This simulation experiment helps students understand the mechanism of dynamic recrystallization during the hot compression process and effectively develops their ability to establish material models using finite element analysis.

关 键 词：镁基复合材料 热变形 动态再结晶模型 数值仿真 

分 类 号：TG146.2[一般工业技术—材料科学与工程]