Influence of heat treatment on the properties of AlSi10Mg-based metal matrix composites reinforced with metallic glass flakes processed by gas pressure infiltration
Influence of heat treatment on the properties of AlSi10Mg-based metal matrix composites reinforced with metallic glass flakes processed by gas pressure infiltration
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DOI：
10.1177/0021998317699867
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发表时间：
2017-03
影响因子：
2.9
通讯作者：
K. Lichtenberg;Eric Orsolani-Uhlig;R. Roessler;K. Weidenmann
中科院分区：
文献类型：
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作者：
K. Lichtenberg;Eric Orsolani-Uhlig;R. Roessler;K. Weidenmann
用硬颗粒增强软基体材料是开发具有定制性能的材料的既定策略。在这方面，使用具有高结晶温度的金属玻璃，例如在系统NiNbX （X = Sn, Ta）中，用于由液态金属渗透生产的复合材料是一种新方法。本文主要研究了气压渗透法制备的金属玻璃颗粒增强alsi10mg基金属基复合材料的表征。研究了加工-组织-性能关系，重点研究了额外热处理对金属基复合材料性能的影响。采用金相方法对复合材料的渗滤质量、颗粒分布及微观组织进行了研究。此外，还进行了x射线衍射测量、超声波光谱弹性分析和压缩试验来分析其性能。x射线衍射结果表明，该玻璃在加工过程中没有结晶。金相研究表明，薄片在复合材料中呈层状结构排列。与未增强材料相比，金属玻璃薄片的嵌入导致杨氏模量和抗压强度的增加。这种复合材料的强度可以通过热处理进一步提高。
The reinforcement of a soft matrix material with hard particles is an established strategy to develop materials with tailored properties. In this regard, using metallic glasses with high crystallization temperatures, e.g. in the system NiNbX (X = Sn, Ta), for composites produced by liquid metal infiltration is a novel approach. The current work deals with the characterization of such metallic glass particle-reinforced AlSi10Mg-based metal matrix composites manufactured by gas pressure infiltration. Processing–structure–property relations were investigated with a special focus on the influence of an additional heat treatment on the metal matrix composite’s properties. Metallographic methods were used to investigate infiltration quality, particle distribution within the composite and the composite’s microstructure. Moreover, X-ray diffraction measurements, elastic analysis using ultrasonic spectroscopy and compression tests were performed to analyze its properties. The X-ray diffraction results indicate that there is no crystallization of the glass during processing. Metallographic investigations show that the flakes are arranged in a layered structure within the composite. The embedding of metallic glass flakes leads to an increase in Young’s modulus and compressive strength in comparison to the unreinforced material. The composite’s strength can be further increased by a heat treatment.