基于MAGMASOFT软件的二次枝晶间距的模拟与优化  

Simulation and Optimization of Second Dendrite Arm Space Based on MAGMASOFT Software

作　　者：张若寰 孙少纯[1] 张辉 ZHANG Ruohuan SUN Shaochun ZHANG Hui(School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, China Huadong Teksid Automotive Foundry Company Limited, Zhenjiang 212009,China)

机构地区：[1]江苏大学材料科学与工程学院,江苏镇江212013 [2]华东泰克西汽车铸造有限公司,江苏镇江212009

出　　处：《热加工工艺》2016年第19期84-86,共3页Hot Working Technology

摘　　要：铝合金的二次枝晶间距值是评估铸件力学性能的重要依据。用MAGMASOFT4.4软件模拟了Al Si7Mg合金二次枝晶间距及冷却曲线,并与实测二次枝晶间距及实测冷却曲线进行了对比,分析了模拟结果与实测结果差距的原因,提出了相应的优化调整方案。应用优化方案采用阶梯型试样进行凝固模拟。通过对比二次枝晶间距计算结果,证明计算结果得到了改进。The second dendrite arm space （SDAS） value of aluminum alloy is an important basis for the evaluation of the mechanical properties of castings. SDAS and cooling curves of A1Si7Mg alloy were simulated by using MAGMASOFT 4.4 software. And SDAS and cooling curves of actual measurement were contrasted. The reasons for the difference between simulation results and measured results were analyzed. Corresponding optimal adjustment scheme was presented. The solidification simulation was carried out by applying optimization scheme and ladder type sample. Through comparing the SDAS calculation results, it is proved that the calculation results are improved.

关 键 词：二次枝晶间距 局部凝固时间 冷却曲线 

分 类 号：TG244.3[金属学及工艺—铸造]