摘要
研究了过共晶Ａｌ－２３％Ｓｉ合金的磷复合盐及稀土复合盐的细化变质效果。试验得出了磷复合盐和稀土复合盐双重处理时的最佳工艺。合金经双重细化变质后，初晶硅的平均尺寸可达１６．６μｍ，共晶硅为细小颗粒状，其室温及高温机械性能显著提高，而线膨胀系数均降低了５％
This papes investiga es the modification effect on the hy pereutcctic Al-23%Si alloy wiah phoephsalt & RE complex salt.The optimum echnique of dual modification with phosphsalt and RE complex salt has been obtained the enough experiments. After the a loy being compositely treaed,the mean sice of the primary crystalline silicon is refined to 16.6μm,and the eutectic crystalline silicon becomes very fine particle and its mechanical properties in room temperature & clevated temperature have vobviously been raiped,while the linear expansion coefficient reduces 5%.
出处
《兵器材料科学与工程》
CSCD
北大核心
1994年第2期37-40,31,共5页
Ordnance Material Science and Engineering
关键词
过共晶
铝硅合金
细化剂
hypereutectic Al-23%Si alloy,phosphsalt, RE complex Salt.dual modification
