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超聲固結(jié)鈦/鋁箔材界面剝離強度與結(jié)合機理分析
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1.北京科技大學(xué);2.中國航空制造技術(shù)研究院

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航空基金資助(2015ZE25006)、聯(lián)合基金資助


Analysis of the peel strength and bonding mechanism of Ti/Al foil interface using ultrasonic consolidation process
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1.University of Science and Technology Beijing;2.AVIC Manufacturing Technology Institute

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    摘要:

    以1100鋁箔和TA1鈦箔為基體材料進行異種金屬材料超聲固結(jié)試驗研究,制備了Ti/Al箔材金屬層狀復(fù)合材料試樣,應(yīng)用剝離試驗研究了振幅、靜壓力對Ti/Al箔材界面結(jié)合強度的影響規(guī)律,利用掃描電鏡研究了剝離界面的微觀組織形貌,采用EDS對剝離界面進行能譜分析,通過透射電鏡對Ti/Al箔材界面微觀組織進行觀察。結(jié)果表明,超聲固結(jié)可以實現(xiàn)Ti/Al箔材良好的結(jié)合界面,界面結(jié)合強度隨著靜壓力的增大先增大后減小,隨著振幅的增大單調(diào)遞增;在振幅35μm,靜壓力1.5kN條件下,獲得最佳的超聲固結(jié)界面,其剝離強度為11.325N/mm;Ti箔材的剝離界面中Al元素均勻分布,并存在明顯的韌窩組織;Ti/Al界面存在元素過度區(qū),界面處晶粒細化明顯;鋁箔表面氧化膜破碎,且鈦元素以彌散的形式嵌入到鋁晶粒內(nèi)部。

    Abstract:

    Experimental investigations on the ultrasonic consolidation of different1 materials were performed using 1100 aluminium and TA1 titanium foils as matyix materials. The layer-metal composite laminate specimens were prepared using the ultrasonic consolidated Ti/Al foil, which were used to investigate effects of amplitude and static force on the interface bonding strength of Ti/Al foil by peel test. In addition, the microstructure morphology observation and energy spectrum analysis of the peeled interfaces were performed using SEM and EDS respectively. Microstructure of Ti/Al foil interface was observed using TEM. The results have shown that a good bonding interface of Ti/Al foil can be obtained using the ultrasonic consolidation technique. The interface bonding strength increased first then decreased with increasing the static force, while increasing monotonically with increasing the amplitude. The optimum ultrasonic consolidated interface with a peeling strength 11.325 N/mm can be obtained using an amplitude 35 um and static force 1.5kN. A uniform distribution of Al element can be found in the peeled interface of Ti foil accompanying with the obvious nest microstructure. Element transition zone existed at the Ti/Al interface. Recrystallisation was obvious at the interface resulting in fine grains. The oxidation layer on the Al foil was broken, and titanium element penetrate Al grains uniformly.

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姜波,任學(xué)平,韓玉杰,侯紅亮,王耀奇,張艷苓.超聲固結(jié)鈦/鋁箔材界面剝離強度與結(jié)合機理分析[J].稀有金屬材料與工程,2019,48(10):3372~3378.[Jiang Bo, Ren Xueping, Han Yujie, Hou Hongliang, Wang Yaoqi, Zhang Yanling. Analysis of the peel strength and bonding mechanism of Ti/Al foil interface using ultrasonic consolidation process[J]. Rare Metal Materials and Engineering,2019,48(10):3372~3378.]
DOI:10.12442/j. issn.1002-185X.20180624

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  • 收稿日期:2018-06-14
  • 最后修改日期:2018-07-05
  • 錄用日期:2018-08-31
  • 在線發(fā)布日期: 2019-11-01
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