中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 21 No. 12 December 2011 |
different wall thickness solidified and cooled in permanent die
（1. School of Mechanical Engineering, Shandong Polytechnic University, Ji’nan 250353, China;
2. Shandong Provincial Key Laboratory of Advanced Machine-making of Light Industry and Monitoring Technology, Ji’nan 250353, China）
Abstract:In order to study the self tempering effect on the solidification of Al−Si alloy, a setup was designed to conduct experiments. The characters of β phases in different thicknesses of Al−Si samples were investigated. The results show that the size distributions of β phases obey the logarithmic normal distribution. The Brinell hardness tests were also carried out. The tested hardness results show that the hardness distribution of the casting cooled in water is evener than that cooled in air, and its averaged value is higher than that cooled in air.
Key words: β phase; Al−Si alloy; self tempering effect; Brinell hardness
