行进速度对搅拌摩擦加工高熵合金增强铝基复合材料组织与性能的影响
Effect of Traverse Speed on Microstructure and Properties of High-Entropy Alloy Reinforced Aluminum Matrix Composite by Friction Stir Processing
摘 要
采用搅拌摩擦加工技术制备了FeCoNiCrAl高熵合金颗粒增强AA5083铝基复合材料，研究了行进速度（45，60，75 mm·min-1）对复合材料中高熵合金颗粒分布、显微硬度和耐磨性能的影响。结果表明：制备的复合材料中没有新相生成，复合材料的显微硬度高于铝合金基体的；随着行进速度的增加，高熵合金颗粒的分布均匀性变差，复合材料的显微硬度略微降低；复合材料的平均摩擦因数和磨损率均较铝合金基体的低；随着行进速度的增加，复合材料摩擦因数和磨损率均增大，耐磨性能下降；复合材料和铝合金的磨损机制分别为磨粒磨损和黏着磨损。
行进速度
高熵合金颗粒
显微硬度
磨损率
磨损机制
friction stir processing
traverse speed
high-entropy alloy particle
microhardness
wear rate
wear mechanism
Abstract
AA5083 aluminum matrix composite reinforced by FeCoNiCrAl high-entropy alloy particles were prepared by friction stir processing. The effect of the traverse speeds (45,60,75 mm·min-1) on the high-entropy alloy particle distribution, microhardness and wear resistance of the composite was studied. The results show that no new phases were formed in the prepared composite. The microhardness of the composite was higher than that of the aluminum alloy matrix. With the increase of the traverse speed, the distribution uniformity of the high-entropy alloy particles became worse and the microhardness of the composite decreased slightly. The average friction coefficient and wear rate of the composite were lower than those of the aluminum alloy matrix. With the increase of the traverse speed, the friction coefficient and wear rate of the composite increased, and the wear resistance decreased. The wear mechanisms of the composite and aluminum alloy were abrasive wear and adhesive wear, respectively.
中图分类号 TB333 DOI 10.11973/jxgccl202108011
所属栏目 材料性能及应用
基金项目 扬州大学大学生科创基金资助项目（X20200359）；扬州大学教学改革研究课题（YZUJX2019-19B）；扬州大学科技创新培育基金资助项目（2019CXJ046）；江苏省高等学校自然科学研究项目（18KJB460031）；中国博士后科学基金面上资助项目（2018M642337）
收稿日期 2020/8/20
修改稿日期 2021/6/24
网络出版日期
作者单位点击查看
备注高吉成(1984-),男,河北衡水人,讲师,博士
引用该论文: GAO Jicheng,GU Gan,ZHONG Shang,DONG Jiachen,ZHANG Sunyi. Effect of Traverse Speed on Microstructure and Properties of High-Entropy Alloy Reinforced Aluminum Matrix Composite by Friction Stir Processing[J]. Materials for mechancial engineering, 2021, 45(8): 61～65
高吉成,顾淦,仲尚,董嘉辰,张孙艺. 行进速度对搅拌摩擦加工高熵合金增强铝基复合材料组织与性能的影响[J]. 机械工程材料, 2021, 45(8): 61～65
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