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界面對銅/鋁異步軋制層狀復(fù)合材料組織與性能的影響
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材料電磁過程研究教育部重點實驗室

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NSFC(51690161)


Effect of interface on microstructure and mechanical properties of Cu/Al laminated composite produced by asymmetrical roll bonding and annealing
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Key Laboratory of Electromagnetic Processing of Materials,Ministry of Education,Northeastern University

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    摘要:

    利用異步軋制復(fù)合技術(shù)和退火工業(yè)制備銅/鋁層狀復(fù)合材料,利用掃描電子顯微鏡觀察界面微觀組織和拉伸斷口形貌,進(jìn)行剝離和拉伸實驗研究界面的力學(xué)性能。實驗結(jié)果表明,熱處理過程促進(jìn)了界面層的形成,而較高的退火溫度破壞了界面結(jié)合。層狀復(fù)合材料的拉伸性能介于兩組元金屬之間。經(jīng)340 °C退火后,銅基體的延伸性能與鋁基體接近,并且界面開裂程度較低。在拉伸過程中,兩金屬基體延伸率不同,導(dǎo)致界面發(fā)生內(nèi)部斷裂。界面作為銅、鋁之間的過渡層,在強(qiáng)化復(fù)合材料方面起到重要作用。

    Abstract:

    The interfacial microstructure and fractography of Cu/Al laminated composite fabricated by asymmetrical roll bonding and annealing were studied by scanning electron microscope. The peeling and tension tests were carried out to investigate the mechanical properties of interface. The results show that the interfacial interlayer is improved by heat treatment and higher annealing tenmperature weaken the interfacial bonding. The tensile properties of laminated composites fall in between two metal components. After annealed at 340 °C, copper substrate is nearly equal to aluminium substrate in ductility, and the crack degree of interface is lower. The mismatch elongation of metal substrates leads to the internal fracture of interlayer during tension tests. The interface plays an important role in strengthening the laminated composite as a transition between copper and aluminum.

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常東旭,王平.界面對銅/鋁異步軋制層狀復(fù)合材料組織與性能的影響[J].稀有金屬材料與工程,2020,49(1):85~92.[Chang Dongxu, Wang Ping. Effect of interface on microstructure and mechanical properties of Cu/Al laminated composite produced by asymmetrical roll bonding and annealing[J]. Rare Metal Materials and Engineering,2020,49(1):85~92.]
DOI：10.12442/j. issn.1002-185X.20180900

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  • 收稿日期:2018-08-30
  • 最后修改日期:2018-11-06
  • 錄用日期:2018-11-08
  • 在線發(fā)布日期: 2020-02-16
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