超声对7050铝合金凝固组织影响的数值模拟

邵高建; 胡仕成; 夏晨希; 管付如

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超声对7050铝合金凝固组织影响的数值模拟
Numerical Simulation and Experimental Verification on Effects of Ultrasonic Treatment on Solidification Structure of 7050 Aluminum Alloy
2011年31卷第2期页码：119-122
纸质出版日期： 2011 ，
DOI：

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[1]邵高建,胡仕成,夏晨希,管付如.超声对7050铝合金凝固组织影响的数值模拟[J].特种铸造及有色合金,2011,31(02):119-122+201.

Shao Gaojian, Hu Shicheng, Xia Chenxi, et al. Numerical Simulation and Experimental Verification on Effects of Ultrasonic Treatment on Solidification Structure of 7050 Aluminum Alloy[J]. Special Casting & Nonferrous Alloys, 2011,31(2):119-122.
[1]邵高建,胡仕成,夏晨希,管付如.超声对7050铝合金凝固组织影响的数值模拟[J].特种铸造及有色合金,2011,31(02):119-122+201. DOI：

Shao Gaojian, Hu Shicheng, Xia Chenxi, et al. Numerical Simulation and Experimental Verification on Effects of Ultrasonic Treatment on Solidification Structure of 7050 Aluminum Alloy[J]. Special Casting & Nonferrous Alloys, 2011,31(2):119-122. DOI：

摘要

采用Procast-CAFE模块

建立了7050铝合金形核和晶粒生长的数学模型

模拟了7050铝合金在不同功率超声作用下组织的演化过程。结果表明

随着超声功率增大

熔体形核率增大

晶粒细化效果更好

组织分布更均匀

平均晶粒尺寸更小。模拟结果与试验结果符合。

Abstract

Nucleation and grain growth model of 7050 aluminum alloy were established based on ProCAST-CAFE modules to predict the microstructural evolution of the alloy in condition of different ultrasonic powers.The results verify that

with increasing in ultrasonic power

nucleation rate in the aluminum alloy melt is increased

which results in the apparent refinement of grain size and uniform distribution of microstructure as well as fine average grain size.The simulated results are well in agreement with experimental ones.