摘要
分别在振动和常压、0.4 MPa与0.7 MPa 3种压力相结合的条件下制备锌铝合金试样,通过光学显微镜分析其微观组织形貌。得出其在振动和压力条件下,凝固微观边部组织晶状由带状、树枝晶状向椭圆状、球状转化,内部晶粒也得到了细化。振动和压力的外在条件抑制了锌铝合金在凝固过程中树枝晶形成和长大而促进了其枝晶形貌向球状晶转化过程。
The zinc alloy samples were prepared under the condition of the vibration and ordinary pressure ,0.4 MPa and 0.7 MPa pressure. The microstructure morphology was obtained by the optical microscopy. The analysis result showed that the crystalline microstructure of solidification by the band edge changes from dendrite-shaped to o- val and spherical grains. The internal grains have also been refined. External conditions of vibration and pressure inhibited formation and the growth of the zinc-aluminum alloy during solidification microstructure dendrite.
出处
《南昌大学学报（工科版）》
CAS
2012年第1期58-61,共4页
Journal of Nanchang University(Engineering & Technology)
基金
国家科技支撑计划资助项目(2009BAE71B06)
关键词
振动加压
锌铝合金
枝晶破碎
球状晶
vibration pressure
zinc-aluminum alloy
dendrite fragmentation
spherical crystal
