Interfacial characteristics, mechanical properties and fracture behaviour of Al/Mg bimetallic composites by compound casting with different morphologies of Al insert

IF 1.3 4区材料科学 Q3 METALLURGY & METALLURGICAL ENGINEERING

International Journal of Cast Metals Research Pub Date : 2022-07-04 DOI:10.1080/13640461.2022.2099095

Guangyu Li, Wenming Jiang, Feng Guan, Zeyu Zhang, Junlong Wang, Z. Fan

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引用次数: 3

Abstract

ABSTRACT The effect of surface morphologies of Al insert, including smooth surface (SS), straight knurling (SK) and hatching knurling (HK) on interfacial microstructure, mechanical properties and fracture behaviour of Al/Mg bimetallic composites by a novel compound casting was studied in this work. The thicknesses of the interface layers of the SK-s and HK-s bimetallic composites, respectively, increased by 11.5% and 4.8% than that of the SS’s composite. The interfacial phase compositions were similar for all the bimetallic composites, mainly consisting of eutectic layer (EU) and intermetallic compound layer (IMC). Therein, the proportion of the EU layer in the entire interface layer for the SK’s and HK’s bimetallic composites was larger than that of the SS’s sample. The EU layer had a lower hardness than the IMC layer. The shear strengths of the SK’s and HK’s bimetallic composites increased by 34.2% and 50.2%, respectively, compared to that of the SS’s bimetallic composite.

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不同形态Al嵌件复合铸造Al/Mg双金属复合材料的界面特性、力学性能和断裂行为

本文研究了一种新型复合铸造铝/镁双金属复合材料的表面形貌，包括光滑表面（SS）、直滚花（SK）和阴影滚花（HK）对其界面微观结构、力学性能和断裂行为的影响。SK-s和HK-s双金属复合材料的界面层厚度分别比SS复合材料增加了11.5%和4.8%。所有双金属复合材料的界面相组成相似，主要由共晶层（EU）和金属间化合物层（IMC）组成。其中，SK和HK的双金属复合材料的EU层在整个界面层中的比例大于SS的样品。EU层具有比IMC层更低的硬度。SK和HK的双金属复合材料的剪切强度分别比SS的双金属材料提高了34.2%和50.2%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Cast Metals Research 工程技术-冶金工程

CiteScore

2.70

自引率

7.10%

发文量

审稿时长

7.5 months

期刊介绍： The International Journal of Cast Metals Research is devoted to the dissemination of peer reviewed information on the science and engineering of cast metals, solidification and casting processes. Assured production of high integrity castings requires an integrated approach that optimises casting, mould and gating design; mould materials and binders; alloy composition and microstructure; metal melting, modification and handling; dimensional control; and finishing and post-treatment of the casting. The Journal reports advances in both the fundamental science and materials and production engineering contributing to the successful manufacture of fit for purpose castings.