摘要
用ＤＳＣ热分析和快速凝固方法对过共晶Ａｌ－１８％Ｓｉ合金熔体结构特征进行了分析研究，着重考察了液态过热温度和元素Ｐ对熔体结构特征的影响．结果表明，在液态区域其结构特征存在三个区域：低温微观不均匀区域、中温微观不均匀向微观均匀过渡区域和高温微观均匀区域．Ｐ增加低过热过共晶Ａｌ－ｌ８％Ｓｉ熔体的微观不均匀性．
Liquid structure features of hypereutectic Al-18%Si alloy have been analyzed by DSC analysis and rapid solidification method. The influences of superheating temperature and P on them have also been studied. Three zones of molten hypereutectic Al-18%Si alloy stracture: a micro-inhomogeneous zone in low liquid temperatures,a transition zone from the micro-inhomogeneous to the micro- homogeneous in middle temperature and micro-homogeneous zone in high temperature are presented. Under low temperature,the micro-inhomogeneity was strengthened by the addition of P atoms.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1995年第4期A177-A182,共6页
Acta Metallurgica Sinica
基金
中国科学院金属研究所快速凝固非平衡合金国家实验室资助
关键词
熔体结构
铝硅合金
过共晶合金
磷
hypereutectic Al-18%Si alloy, liquid structure, micro-inhomogeneity
