超声波振动对共晶灰铸铁中石墨形态的影响  

Effect of Ultrasonic Vibration on Graphite Morphology in Eutectic Grey Cast Iron

作　　者：李军文[1] 岳旭东[1] 陈萌[1] 曲志国[1] 

机构地区：[1]辽宁工业大学材料与化学工程学院金属超声凝固研究室,辽宁锦州121001

出　　处：《热加工工艺》2009年第19期36-38,42,共4页Hot Working Technology

基　　金：教育部留学回国人员科研启动基金资助项目(20071067);辽宁省教育厅创新团队项目(20081224);辽宁省自然科学基金资助项目(20082177)

摘　　要：以灰铸铁为对象,考察了其熔体经超声波处理后所得铸态组织中石墨形态的变化,并分析了其变化原因。结果表明:经超声波处理后的灰铸铁中石墨形态发生了较大的变化,由粗大弯曲的片状变成均匀细小且卷曲的片状乃至近似球状。其原因来自于超声波所产生的空化效应、声流效果等一系列非线性声学作用。The change of graphite morphology in eutectic grey cast iron which was treated by ultrasound was studied, the changing reason were analyzed. The results indicate the graphite morphology of gray iron which is treated has a great change from rough curving flake shape to homogeneous fine shape, and finally into near-spheroidal shape.

关 键 词：超声波振动 共晶灰铸铁 石墨形态 凝固 

分 类 号：TG251[金属学及工艺—铸造]