| 喷射沉积大尺寸A356铝合金管坯的组织与性能 |
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| 引用本文： | 陈志钢,陈振华,王振生,刘厚才,刘文辉,贺毅强.喷射沉积大尺寸A356铝合金管坯的组织与性能[J].机械工程材料,2011(8). |
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| 作者姓名： | 陈志钢 陈振华 王振生 刘厚才 刘文辉 贺毅强 |
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| 作者单位： | 湖南科技大学机电工程学院;湖南大学材料科学与工程学院;淮海工学院机械工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(50974058); 湖南科技大学人才引进基金资助项目(E51078) |
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| 摘 要： | 通过多层喷射沉积技术制备了大尺寸A356铝合金管坯,采用光学显微镜、扫描电镜、X射线衍射仪和拉伸试验机等分析了管坯的组织特征及后续轧制和热处理对管坯组织与力学性能的影响。结果表明:喷射沉积A356铝合金管坯的组织细小,但含有少量孔隙,第二相主要为近球形共晶硅和短棒状富铁相;喷射沉积管坯为大量雾化熔滴粘结而成,通过适当的轧制和热处理可以消除沉积坯中的孔隙和原始粉体界面强度弱等缺陷,提高其力学性能。
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| 关 键 词： | 喷射沉积 A356铝合金 显微组织 力学性能 |
Microstructure and Properties of Spray Deposition Large Size A356 Aluminum Alloy Tube Blank |
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| CHEN Zhi-gang,CHEN Zhen-hua,WANG Zhen-sheng,LIU Hou-cai,LIU Wen-hui,HE Yi-qiang.Microstructure and Properties of Spray Deposition Large Size A356 Aluminum Alloy Tube Blank[J].Materials For Mechanical Engineering,2011(8). |
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| Authors: | CHEN Zhi-gang CHEN Zhen-hua WANG Zhen-sheng LIU Hou-cai LIU Wen-hui HE Yi-qiang |
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| Affiliation: | CHEN Zhi-gang~1,CHEN Zhen-hua~2,WANG Zhen-sheng~1,LIU Hou-cai~1,LIU Wen-hui~1,HE Yi-qiang~3 (1.College of Electromechanical Engineering,Hunan University of Science and Technology,Xiangtan 411201,China,2.College of Materials Science and Engineering,Hunan University,Changsha 410082,3.College of Mechanical Engineering,Huaihai Institute of Technology,Lianyungang 222005,China) |
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| Abstract: | Large size A356 aluminum alloy tube blank was prepared by multilayer spray deposition technology,and the microstructure characteristic and the effect of subsequent rolling and heat treatment on microstructure and mechanical properties were analyzed by using optical microscopy,SEM,X-ray diffractometer and tensile tester.The results show that the microstructure of A356 aluminum alloy tube blank prepared by spray deposition was tiny but contained a little pores,and the secondary phase was subsphaeroidal eutect... |
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| Keywords: | spray deposition A356 aluminum alloy microstructure mechanical property |
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