摘要
采用Bridgman定向凝固法研究了不同生长速度下Zn-3.37%Cu(质量分数)包晶合金的凝固过程及其组织形态.当生长速度高于1.0mm/s时,出现片层状类共晶生长,且片层间距和生长速度的关系很好地符合λv1/2=(216±42)μm3/2·s-1/2关系,该数值与多数共晶系相比偏高.这类共晶组织在包晶合金中的发现有助于对包晶合金凝固过程的进一步研究.
Zn-3.37%Cu peritectic alloy has been unidirectionally solidified with a
wide range of growth velocities. It is found that when the growth velocity is beyond 1.0 mm/s, a
new kind of lamellar eutectic-like structure occurs in the solidified samples. Furthermore, the
relation between lamellar spacing and growth velocity corresponds to λv 1/2 =(216±42)μ
m 3/2 ·s -1/2 where the constant is larger than other eutectic systems.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1999年第1期6-8,共3页
Acta Metallurgica Sinica