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金属学报  2013, Vol. 49 Issue (3): 297-302    DOI: 10.3724/SP.J.1037.2012.00507
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连续铸造法制备3003/4004铝合金复层圆铸坯
李继展1付莹1,接金川1,赵佳蕾1,Joonpyo Park2,Jongho Kim2,李廷举1
1) 大连理工大学材料与科学工程学院, 大连 116024
2) 浦项产业科学研究院, 浦项790--600, 韩国
CONTINUOUS CASTING OF THE CLADDING 3003/4004 ALUMINUM ALLOY CIRCULAR INGOT
LI Jizhan1, FU Ying1, JIE Jinchuan1, ZHAO Jialei1, Joonpyo Park2, Jongho Kim 2,LI Tingju1
1) School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024
2) Research Institute of Industrial Science and Technology (RIST), Pohang 790--600, Korea
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摘要 

采用直接水冷连续铸造法制备了3003/4004铝合金复层圆铸坯, 使用OM, SEM和EPAM对复层铸锭界面凝固组织及元素分布进行了系统的检测, 并对3003/4004铝合金复层铸坯进行拉伸实验, 分析其界面结合强度. OM结果表明, 直接水冷连续铸造法所制备的3003/4004铝合金复层圆铸坯界面清晰, 无气孔、夹杂等缺陷, 整个铸锭断面大部分为等轴晶组织. 利用EPAM对结合界面进行线扫描分析, 结果表明, 3003和4004铝合金溶质元素间发生了相互扩散, 形成厚度约为30μm的扩散层. 复层铸坯拉伸实验结果表明, 3个拉伸试样都在强度较低的3003铝合金一侧断裂, 试样抗拉强度为107.7 MPa, 说明复层铸坯界面结合强度高于3003铝合金抗拉强度, 界面结合牢固.

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李继展
付莹
接金川
赵佳蕾
Joonpyo Park
Jongho Kim
李廷举
关键词 复层铸坯连续铸造界面形貌界面结合强度    
Abstract

Cladding metals have been widely applied to many fields because they have many excellentphysical, chemical and mechanical properties that can not be obtained from the single metals. There are manyconventional processes for manufacturing cladding metals, for example roll bonding, diffusion bonding, explosivewelding, extrusion cladding and casting cladding. Among these processes, continuous casting is an ideal processto prepare cladding metals which has the advantages of high production efficiency, low production cost and goodinterface bonding. This process can make two metals contact directly by the ways of one liquid-one liquid, oneliquid-one solid or one liquid-one semi-solid and then the good metallurgical bonding can be obtained. So, thisprocess is extensively studied by researchers engaging in material processing. The process of the directwater-cooled continuous casting to fabricate cladding 3003/4004 aluminum alloy circular ingot is researched inthis paper. The 3003 aluminum alloy has excellent corrosion resistance, low strength and high melting point, whilethe 4004 aluminum alloy has poor corrosion resistance, high strength and low melting point. The cladding3003/4004 aluminum alloy material can combine the advantages of two metals and can be widely used in manyfields, especially in car engine and air conditioning heat sink. To obtain the good interface bonding, a special innermold with the single-side cooling capability was applied in this process. By the special inner mold, the two alloyscan make the contact of one liquid-one solid or one liquid-onesemi-solid on the interface. The solidification structure and elemental distribution near the interfaceof cladding ingot were systematically detected by OM, SEM and EPAM. Tensile test was carried out to evaluate theinterface bonding strength. The OM results indicated thatthe interface of cladding 3003/4004 aluminum alloy ingot was clear without gas holes and slag inclusion. Mostgrains were equiaxed in the cross-section of cladding 3003/4004 aluminum alloy circular ingot. The EPAM resultssuggested that the interdiffusion of alloy elements in 3003 and 4004 alloy occurred and there was an about 30μmwide diffusion layer near the interface. The entire tensile specimen fractured in the sides of 3003 alloy with theaverage ultimate tensile strength of 107.7 MPa, indicating that the interface bonding strength of cladding ingotwas higher than the ultimate tensile strength of 3003 alloy and the good metallurgical bonding near the interface wasobtained by this process.

Key wordscladding ingot    continuous casting    interface morphology    interface bonding strength
收稿日期: 2012-08-30      出版日期: 2013-03-11
基金资助:

国家自然科学基金资助项目51074031

通讯作者: 李廷举     E-mail: tjuli@dlut.edu.cn
作者简介: 李继展, 男, 1987年生, 硕士生 10.3724/SP.J.1037.2012.00507
引用本文:   
李继展,付莹,接金川,赵佳蕾,Joonpyo Park,Jongho Kim,李廷举. 连续铸造法制备3003/4004铝合金复层圆铸坯[J]. 金属学报, 2013, 49(3): 297-302.
LI Jizhan, FU Ying, JIE Jinchuan, ZHAO Jialei, Joonpyo Park, Jongho Kim,LI Tingju. CONTINUOUS CASTING OF THE CLADDING 3003/4004 ALUMINUM ALLOY CIRCULAR INGOT. Acta Metall Sin, 2013, 49(3): 297-302.
链接本文:  
http://www.ams.org.cn/CN/10.3724/SP.J.1037.2012.00507      或      http://www.ams.org.cn/CN/Y2013/V49/I3/297
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