摘要
基于定向凝固胞晶与Ｓａｆｆｍａｎ－Ｔａｙｌｏｒ指的相似性，给出了棒状共晶凝固模型，得到表述的相间距选择规律，并用ＭｎＳｂ／Ｓｂ共晶生长实验证实了模型的有效性。发现ｎｆ／ｎｆＭｎＳｂ／Ｓｂ和ｆ／ｎｆＭｎＢｉ／Ｂｉ，Ｓｉ／Ａｌ棒状共晶有非常接近的耦合参数σ_ｅｆｆ，结构特征上表现为相间距选择的相似性。
Based on correspondence between solidification cell and Saffman-Taylor finger, a solidification model of rod eutectic is proposed and used to indicate that the law of phase spacing selection can be expressed by. The effectiveness of the model is experimentally verified by MnSb/Sb eutectic growth. It is found that nf/nf MnSb/Sb and f/nf Si/Al, MnBi/Bi rod eutectics have a nearly same coupling parameter σeff and the similarity of phase spacing selection in microstructure
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1996年第2期120-126,共7页
Acta Metallurgica Sinica
基金
高等学校博士学科点专项科研基金
关键词
棒状共晶
耦合模型
凝固模型
金属
rod eutectic, coupling model, MnSb/Sb growth, phase spacing selection
