摘要
通过不同铸造工艺制取的相同成分不同组织形貌的变质用Al－8．62％Sr中间合金，具有明显的变质效果差异在砂型条件下，用Al－8．62％Sr中间合金对共晶Al－Si合金进行变质处理，加人使Al－Si合金含0.1％Sr的锭料和加入使Al-Si合金含0.05％Sr的激冷薄片，二者的变质效果相当，都为5级.在金属型条件下，加入使Al－Si合金含0.06％Sr的锭料和加入使AL－Si合金含0.03％Sr的激冷薄片，二者的变质效果亦相当，都为6级经过试验证明，这种变质效果的差异是由AL－8.
The Al-8.62% Sr master alloys with same composition but differentmicrostructures have different modification efficiency for Al-Si alloy. When Al-Sr ingot,corresponding to 0.1 %Sr in Al-Si alloy, or rapidly solidified Al-Sr sheet, coressponding to0.05%Sr in Al-Si alloy, was added, the modification rating of the eutectic Al-11 .8% Si alloyreaches class 5 at the condition of sand mold casting. At the permanent mold condition, bythe addition of Al-Sr ingot, corresponding to 0.06%Sr in Al-Si alloy, or rapidly solidifiedAl-Sr sheet, corresponding to 0.03%Sr in Al-Si alloy, the modification rating of the Al-Si alloy reaches class 6. It has been shown that the difference of the modification rating is attributed to the structural heredity effect.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1997年第6期609-614,共6页
Acta Metallurgica Sinica
基金
国家自然科学基金!59671046
