摘要
经变形处理后的Al－5％Sr中间合金与未变形的相比，具有明显的变质效果差异在砂型条件下，用Al－5％Sr中间合金对共晶Al－Si合金进行变质处理，加入含锶量为0．1％的锭料，变质度为5级；加入变形处理的中间合金时，含锶量仅为0．05％时变质度为5级，含锶量为0．06％即达到最佳变质效果，为5.5级在金属型条件下，加入含锶量为0．06％的锭料与加入含锶量0.03％的变形处理的中间合金的变质效果相当。
Al-5%Sr master alloys made by difFerent processings with the same composition butthe difFerent microstructure have obviously difFerent modifying efficiency. Under the condition of sandmold, the addition of 0.1%Sr in ingot master alloy, the modifying ratio is grade 5. The modifying ratioof the Al-5%Sr deformed master alloy with 0.05% content of Sr is also grade 5 and the modifying ratioof the Al-5%Sr containing 0.06%Sr deformed master alloy reaches its peak, grade 5.5. For the additionof the ingot master alloy containing 0.06%Sr and the deformed master alloy containing 0.03%Sr, themodifying ratio of Al-11.8%Si alloy is grade 6 in the permanent mold condition. This kind of differenceof the modifying efficiency should be attributed to the structural heredity efFect.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
1999年第2期162-166,共5页
Chinese Journal of Materials Research
基金
国家自然科学基金!59671046
山东省自然科学基金!Y96F05087
