利用原位生成的 Al2O3 改善 Al2O3/Al 复合材料的拉伸性能

IF 2.4 4区材料科学 Q2 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Testing Pub Date : 2024-01-24 DOI:10.1515/mt-2023-0311

Wenchao Shi, B. Cui, Min Tang, D. Gong, Feng Xu

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引用次数: 0

摘要

为了获得高强度的 Al2O3/Al 复合材料，原位生成的 Al2O3 被用作增强材料。采用球磨法将纯铝粉片化。用真空热压烧结法获得带有鳞片状铝粉的 Al2O3/Al 复合材料。研究了鳞片状铝粉对原位生成的 Al2O3 分布的影响。研究了 Al2O3/Al 复合材料的硬度和拉伸性能。结果表明，硼酸在含有片状铝粉和球状铝粉的粉末混合物中的脱水温度分别为 119 ℃ 和 128 ℃。在烧结阶段，Al2O3 在原位生成。与含有球形铝粉的 Al2O3/Al 复合材料相比，含有片状铝粉的 Al2O3/Al 复合材料中生成的 Al2O3 更多。Al2O3/Al 复合材料的硬度和极限拉伸强度均高于纯铝合金。

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Improved tensile properties of Al2O3/Al composite with in-situ generated Al2O3

In order to obtain a Al2O3/Al composite with high strength, the Al2O3 generated in situ is served as reinforcement. The ball milling is used to flake pure Al powders. The Al2O3/Al composite with flaked Al powders is obtained by vacuum hot pressing sintering. The effect of the flaked Al powders on the distribution of Al2O3 generated in situ is studied. The hardness and tensile properties of Al2O3/Al composite are studied. The results show that the dehydration temperatures of boric acid in powder mixtures with the flaked Al powders and with the spherical Al powders are 119 °C and 128 °C, respectively. During sintering stage, the Al2O3 is generated in situ. Compared with the Al2O3/Al composites with the spherical Al powders, more Al2O3 are generated in Al2O3/Al composites with the flaked Al powders. The hardness and ultimate tensile strength of Al2O3/Al composite are higher than those of pure Al alloy.

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来源期刊

Materials Testing 工程技术-材料科学：表征与测试

CiteScore

4.20

自引率

36.00%

发文量

165

审稿时长

4-8 weeks

期刊介绍： Materials Testing is a SCI-listed English language journal dealing with all aspects of material and component testing with a special focus on transfer between laboratory research into industrial application. The journal provides first-hand information on non-destructive, destructive, optical, physical and chemical test procedures. It contains exclusive articles which are peer-reviewed applying respectively high international quality criterions.