中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 12 No. 2 April 2002 |
and grain refiners on structure and
properties of A356.2 alloys
（1.Department of Mechanical Engineering,
Tsinghua University, Beijing 100084, China;
2.Physical and Technological Department,
Samara State Technical University, Samara 443010, Russia）
Abstract:The hereditary effect of Al-Ti, Al-Ti-B, Al-Sr master alloys on the structure and properties of A356.2 alloys was investigated, and comparison analysis between the master alloys used in the foundry industry and the fine-crystalline grain refiners produced by technologies of Samara State Technical University was conducted. The results show that less than 0.5% additions of FCR master alloys can promote 8%～20% in the elongation of as-cast A356.2 alloys. FCR additives are more efficient in comparison with conventional grain refiners and modifiers. Their effectiveness depends on their genetic effect of their finer structures.
Key words: master alloys; hereditary effect; grain refinement
