Simulation of GrAln Growing Process of Zinc-Aluminium Alloy under High Pressure
Under high pressure that is more than 1GPa, the grAln growing process of Zinc-Aluminium(ZA) alloy is difficult observed by testing method, therefore numerical simulation method is used to observe grAln growing process of ZA alloy. Firstly, as a variable, pressure is leading-in thermodynamic parameter of ZA alloy, then solute diffusion and redistribution model, grAln nucleating and growing model are present. Because grAln character is dendrite, this solidified module is applied to simulation process, results are as following: At primary stage of solidified, it present growing process of equiaxed grAln, with increasing of solidification time, temperature environment around different grAlns become nonhomogeneous, some grAlns appear fast growth, and dendrite arm size is not equal. Under 2GPa high pressure, simulated microstructure is compared with experimental microstructure, both grAln size and grAln distribution are similar, proving that the grAln growing process can be well observed by simulation method.
Zinc-Aluminium alloy high pressure mathematical modeling grAln growing
Qu Yingdong Li Rongde Bai Yanhua Li Ronxia Yang Hongwang Wang Ruichon
Key Laboratory for Light Metal Material and Engineering of the Education Department of Liaoning Prov Key Laboratory for Light Metal Material and Engineering of the Education Department of Liaoning Prov
国际会议
69th World Foundry Congress(第69届世界铸造会议 WFC 2010)
杭州
英文
964-967
2010-10-16（万方平台首次上网日期，不代表论文的发表时间）