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连续铸造法制备3003/4004铝合金复层圆铸坯

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Indexed by:期刊论文

Date of Publication:2013-03-11

Journal:金属学报

Included Journals:SCIE、EI、PKU、ISTIC、CSCD、Scopus

Volume:49

Issue:03

Page Number:297-302

ISSN No.:0412-1961

Key Words:复层铸坯;连续铸造;界面形貌;界面结合强度

Abstract: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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