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冷軋復(fù)合AgNi10/Cu/Fe界面結(jié)合特征研究
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Interface Characteristics of AgNi10/Cu/Fe by Cold Roll Bonding
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    摘要:

    采用等輥徑、等輥速冷軋復(fù)合技術(shù)制備了AgNi10/Cu/Fe三層復(fù)合材料，對其界面結(jié)合機(jī)制進(jìn)行了研究。復(fù)合前對三層材料分別進(jìn)行再結(jié)晶退火，獲得均勻的原始組織及相近的硬度，并用鋼絲刷清理復(fù)合面。利用掃描電鏡和能譜儀對復(fù)合材料的剝離面進(jìn)行了形貌觀察和成分分析。結(jié)果發(fā)現(xiàn)，AgNi10/Cu/Fe的界面結(jié)合機(jī)制主要是裂口機(jī)制。各層復(fù)合面的硬化層在軋制時開裂，其中較軟金屬（AgNi10和Cu）從裂口中擠出，與硬金屬（Cu和Fe）產(chǎn)生結(jié)合；其結(jié)合強(qiáng)度分別大于AgNi10和Cu的基體強(qiáng)度。

    Abstract:

    AgNi10/Cu/Fe layered composites were prepared by cold roll bonding with equal-roller-diameter and equal-rolling-speed. The interface bonding mechanism was investigated. The raw tapes of the AgNi10, Cu and Fe were singly annealed before bonding so as to obtain homogeneous recrystallized microstructures and similar hardness. The surfaces to be bonded were cleaned by a scratch brush just before entering the roll gap. After bonding, the peeled interfaces of the composites were analyzed by SEM and EDS. Results show that the bonding mechanism of the as-rolled interfaces is primarily cracking. During roll bonding, the work-hardened surface layers are fractured. Virgin metals of the softer layers (AgNi10 and Cu for AgNi10/Cu and Cu/Fe respectively) are extruded from the cracks and bonded with the harder ones (Cu and Fe). The bonding strength is greater than the fracture strength of AgNi10 and Cu in AgNi10/Cu and Cu/Fe.

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王 勇,劉安利,徐永紅,章 應(yīng),楊賢軍.冷軋復(fù)合AgNi10/Cu/Fe界面結(jié)合特征研究[J].稀有金屬材料與工程,2011,40(4):693~696.[Wang Yong, Liu Anli, Xu Yonghong, Zhang Ying, Yang Xianjun. Interface Characteristics of AgNi10/Cu/Fe by Cold Roll Bonding[J]. Rare Metal Materials and Engineering,2011,40(4):693~696.]
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  • 收稿日期:2010-04-25
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