Nanoindentation studies of ex situ AlN/Al metal matrix nanocomposites
Nanoindentation studies of ex situ AlN/Al metal matrix nanocomposites
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DOI：
10.1016/j.jallcom.2013.12.239
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发表时间：
2014-12-05
影响因子：
6.2
通讯作者：
Bhatt, Jatin
中科院分区：
文献类型：
--
作者：
Fale, Sandeep;Likhite, Ajay;Bhatt, Jatin
将纳米氮化铝(AlN)粉末以不同的质量比分散在铝基中，采用非原位熔体冶金法制备金属基纳米复合材料(MMNC)。用高分辨扫描电子显微镜(FEG-SEM)对合成的Al-AlN纳米复合材料进行了物相分析，并用微压痕和纳米压痕测试了材料的硬度行为。根据热力学数据和质量平衡方程，利用从能量色散光谱(EDS)结果获得的元素数据，对氧化物相进行了定量分析。利用纳米压痕试验机研究了氧化相在AlN颗粒中的作用，以了解复合材料的力学行为。通过纳米压痕试验得到的载荷-位移曲线揭示了氧化相沿AlN颗粒的分布及其对压痕穿透的影响。(C)2014爱思唯尔B.V.保留所有权利。
Nanocrystalline Aluminium nitride (AlN) powder is dispersed in different weight ratio in Aluminum matrix to fabricate metal matrix nanocomposite (MMNC) using ex situ melt metallurgy process. The synthesized Al-AlN nanocomposites are studied for phase analysis using high resolution scanning electron microscopy (FEG-SEM) and for hardness behavior using microindentation and nanoindentation tests. Quantitative analysis of the oxide phases is calculated from thermodynamic data and mass balance equation using elemental data obtained from energy dispersive spectroscopy (EDS) results. Role of oxide phases in association with AlN particles is investigated to understand the mechanical behavior of composites using nanoindentation tester. Load-displacement profile obtained from nanoindentation test reveals distribution of oxide phases along with AlN particle and their effect on indent penetration. (C) 2014 Elsevier B.V. All rights reserved.