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Effect of barium on the refinement of primary aluminum and eutectics in a hypoeutectic Al-Si alloy
作者姓名:LI Wei  FAN Hongyuan  ZHANG Xianju  and SHEN Baoluo School of Manufacturing Science and Engineering  Sichuan University  Chengdu  China
作者单位:LI Wei,FAN Hongyuan,ZHANG Xianju,and SHEN Baoluo School of Manufacturing Science and Engineering,Sichuan University,Chengdu 610065,China
基金项目:This work is financially supported by the National Natural Science Foundation of China (No. 59631080)
摘    要:The effect of barium on the refinement of primary aluminum and on the modification of eutectics in a hypoeutec-tic aluminum-silicon alloy was investigated. The results indicate that barium not only modifies the eutectic silicon but also refines the primary aluminum and there is a relationship between the retained barium and the second spacing of primary aluminum. Experiments of barium-treated commercial Al-Si hypoeutectic alloy show that barium is a better modifier than sodium when there is a longer holding time.


Effect of barium on the refinement of primary aluminum and eutectics in a hypoeutectic Al-Si alloy
LI Wei,FAN Hongyuan,ZHANG Xianju,and SHEN Baoluo School of Manufacturing Science and Engineering,Sichuan University,Chengdu ,China.Effect of barium on the refinement of primary aluminum and eutectics in a hypoeutectic Al-Si alloy[J].Rare Metals,2003(3).
Authors:LI Wei  FAN Hongyuan  ZHANG Xianju  and SHEN Baoluo School of Manufacturing Science and Engineering  Sichuan University  Chengdu  China
Affiliation:LI Wei,FAN Hongyuan,ZHANG Xianju,and SHEN Baoluo School of Manufacturing Science and Engineering,Sichuan University,Chengdu 610065,China
Abstract:The effect of barium on the refinement of primary aluminum and on the modification of eutectics in a hypoeutec-tic aluminum-silicon alloy was investigated. The results indicate that barium not only modifies the eutectic silicon but also refines the primary aluminum and there is a relationship between the retained barium and the second spacing of primary aluminum. Experiments of barium-treated commercial Al-Si hypoeutectic alloy show that barium is a better modifier than sodium when there is a longer holding time.
Keywords:non-ferrous metal  barium modification  primary aluminum  eutectic  Al-Si alloy
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