超声波对Al-1.0%Cu合金热裂的影响  

Effect of ultrasonic vibration on hot tearing of Al-1.0%Cu alloy

作　　者：李军文[1] 郝政晔[1,2] 陈萌[1] 曲志国[1] 

机构地区：[1]辽宁工业大学材料科学与工程学院,辽宁锦州121001 [2]中国一拖集团有限公司铸造中心,河南洛阳471004

出　　处：《轻合金加工技术》2009年第12期15-18,41,共5页Light Alloy Fabrication 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：试验研究了超声波对Al-1.0%Cu合金热裂倾向性的影响。结果表明,Al-1.0%Cu合金熔体经过超声波处理后,其抗裂力增大,热裂倾向明显降低。断口为沿晶断裂并且存在明显的液膜拉伸痕迹。The Al-Cu alloy was regarded as raw material; the effect of ultrasonic vibration on hot tearing of Al-1.0%Cu alloy was investigated. Furthermore, the hot tearing fracture was observed. The conclusion generalized as follows： the alloy crack resistance was increased by ultrasonic treatment into melt; the hot tearing trend was decreased. The fracture surface was intergranular fracture and was existed trace of stretched liquid film clearly.

关 键 词：超声波振动 Al-1.0%Cu合金 金属熔体 热裂 断口 

分 类 号：TG146.21[一般工业技术—材料科学与工程] TG292[金属学及工艺—金属材料]