骆宏文,徐琨,张文昌,龙威,周小平

• 1:湖北工业大学材料与化学工程学院
• 2:湖北工业大学绿色轻工材料湖北省重点实验室

摘要(Abstract)：

以2024铝合金粉末为基体材料，纯Zr粉和纯Ti粉作为增强体材料，采用粉末冶金的方法制备出了Al_3(Zr, Ti)/2024Al复合材料。通过对Al-Ti-Zr三元体系进行差示扫描量热分析(DSC),确定了初步烧结温度。利用X射线衍射(XRD)、扫描电镜(SEM)、能谱仪(EDS)、万能拉伸试验、显微硬度仪以及电化学性能测试等研究了烧结温度对复合材料组织与性能的影响。结果表明：随着烧结温度的升高，复合材料的抗拉强度和硬度均呈现出先增大后减小的趋势，耐腐蚀性能呈现出先上升后下降的趋势。当烧结温度为850℃时，复合材料的抗拉强度、硬度和腐蚀电位达到最大，分别为458.06 MPa、149.8 HV0.01和-0.451 V,腐蚀电流密度为1.888×10~(-6) A/cm~2。随着烧结温度的升高，复合材料的致密度呈现出上升的趋势，孔隙度呈现出下降的趋势，当烧结温度为950℃时，复合材料的致密度达到了98.88%,孔隙度下降到了1.12%,说明烧结温度的适当提高可以使复合材料的致密度提高。

关键词(KeyWords)： Al_3(Zr, Ti)/2024Al复合材料;烧结温度;硬度;抗拉强度;耐腐蚀性

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 骆宏文,徐琨,张文昌,龙威,周小平

DOI: 10.13289/j.issn.1009-6264.2021-0472

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