The mechanical properties of composite materials recycled from waste metallic chips under different pressures
The mechanical properties of composite materials recycled from waste metallic chips under different pressures
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DOI：
10.1007/s13762-019-02317-3
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发表时间：
2019-09-01
影响因子：
3.1
通讯作者：
Akdemir, A.
中科院分区：
文献类型：
--
作者：
Aslan, A.;Salur, E.;Akdemir, A.
本研究的目的是利用废金属屑制备复合材料。在此背景下，在不同的生产压力下制备了金属基复合材料，研究了不同的生产压力对金属基复合材料力学性能的影响。研究了球墨铸铁(GGG-40)在青铜(CuSn10)基体中的强化效果。采用热压法制备了增强率为20wt%的GGG-40复合材料。选择一个试件的总生产时间为25min，温度为400℃。为了确定MMCs的力学性能和固化机理，进行了Brinell和Micro-Vickers硬度、孔隙率、压缩和X射线衍射测试。此外，还观察了金相组织图，以确定金属碎屑的固结质量。实验结果表明，与块体CuSn10材料相比，废金属屑可以成功地回收制成孔隙率约为40%、强度几乎为100%、硬度为150%的MMC最终零件。文献中提出的大多数研究都是关于用传统方法制备的MMC的性质的信息。然而，目前还没有关于青铜基金属基复合材料回收利用的现有数据，这使得本研究更具创新性。这项研究还表明，废金属屑可以通过所提出的回收方法来利用，与产生对地球大气有害气体的传统回收方法相比，这是一种环保的回收方法。
The purpose of this study is to produce composite materials by utilizing the waste metallic chips. In this context, the metal matrix composite materials (MMCs) were produced at different production pressures and the effects of the different pressures on mechanical properties of MMCs were investigated. In the present investigation, spheroidal graphite cast iron (GGG-40) was used as reinforcement material in bronze (CuSn10) matrix system. The MMCs were produced by hot press with 20 wt% GGG-40 reinforcement ratio. The total time required for the production of one specimen was selected as 25 min and temperature was settled at 400 degrees C. In order to determine mechanical properties and consolidation mechanism of MMCs, Brinell and micro-Vickers hardness, porosity, compression and X-ray diffraction tests were conducted. In addition, microstructure views were examined to determine the consolidation quality of metallic chips. According to experimental results, it was observed that waste metallic chips can be successfully recycled into MMC final parts with approximately 40% porosity and almost 100% strength and 150% hardness with respect to bulk CuSn10 materials. Most of the presented studies in the literature present information about properties of MMCs fabricated by conventional production methods. However, no available data are found about the recycling of bronze-based MMCs which make this study more original. It is also shown in this study that waste metallic chips can be utilized by proposed recycling methodology, which is environmentally friendly in comparison with conventional recycling methods producing harmful gases for earth atmosphere.