期刊文献+

Microstructure and properties at bonding interface of AA4045/AA3003 aluminum alloy cladding billet prepared by semi-continuous casting 被引量:2

半连续铸造法制备AA4045/AA3003铝合金包覆铸锭的界面组织和性能(英文)
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摘要 AA4045/AA3003 cladding billet was prepared by direct chill semi-continuous casting process. The macrostructures, microstructures, temperature distribution, compositions distribution and the mechanical properties at the bonding interface were investigated in detail. The results show that the cladding billet with few defects could be obtained by semi-continuous casting process. At the interface, diffusion layer of about 10μm on average formed between the two alloys due to the diffusion of alloy elements in the temperature range from 596 to 632 °C. From the side of AA4045 to the side of AA3003, the Si content has a trend to decrease, while the Mn content has a trend to increase gradually. Tensile strength of the cladding billet reaches 103.7 MPa, the fractured position is located on the AA3003 side, and the shearing strength is 91.1 MPa, revealing that the two alloys were combined metallurgically by mutual diffusion of alloy elements. 采用直接水冷半连续铸造法制备AA4045/AA3003铝合金包覆铸锭,对合金界面组织、温度分布、成分分布及力学性能进行研究。结果表明,包覆铸锭界面清晰平直,无气孔、夹杂等缺陷,界面处合金元素在596~632℃范围内发生扩散,形成平均厚度的10μm的扩散层。从AA4045铝合金一侧向AA3003铝合金一侧,Si元素含量下降,Mn元素含量上升。包覆铸锭试样的抗拉强度为103.7 MPa,断口位于AA3003合金侧,界面抗剪切强度为91.1 MPa,说明两种合金通过合金元素的互扩散实现了冶金结合。
出处 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2016年第3期658-664,共7页 中国有色金属学报(英文版)
基金 Project(2012CB723307)supported by the National Basic Research Program of China Project(51204046)supported by the National Natural Science Foundation of China Project(20130042130001)supported by the Doctoral Fund of Ministry of Education of China
关键词 aluminum alloy cladding billet bonding interface DIFFUSION interfacial strength 铝合金 包覆铸锭 结合界面 扩散 界面强度
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参考文献22

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