超声处理凝固的Al-Cu合金铸锭的共晶相表征及力学性能

Eutectic Phase Characterization and Mechanical Properties of Al-Cu Alloy Ingot Solidified with Ultrasonic Treatment.

作者信息

Li Ruiqing, Dong Fang, Zhang Yun, Chen Pinghu, Li Xiaoqian

机构信息

Light Alloy Research Institute, State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410012, China.

College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China.

出版信息

Materials (Basel). 2022 Jan 29;15(3):1067. doi: 10.3390/ma15031067.

DOI:10.3390/ma15031067

PMID:35161012

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8838808/

Abstract

An Al-Cu alloy ingot was produced with the application of ultrasonic melt treatment. The effects of ultrasonication on the grain structure, eutectic phase, solution, and tensile properties of the alloy were analyzed. The volume and distribution of the eutectic phase were quantitatively evaluated based on stereological theory. The results are as follows: The grain-refinement efficiency at the center, 1/2 radius and edge of the ingot is 33.99%, 45.2% and 41.68%, respectively, under the action of an ultrasonic field. Ultrasonics improves the solid solubility of the Al-Cu alloy element, in which the solid solubility of Cu increases from 0.85% to 1.42%. The ultrasonic field improves the dispersion degree of the eutectic phase and reduces the volume fraction and eutectic phase number per unit volume. The mechanical properties of the Al-Cu alloy were improved by an ultrasonic field.

摘要

通过超声熔体处理制备了一种Al-Cu合金铸锭。分析了超声处理对合金的晶粒结构、共晶相、固溶体和拉伸性能的影响。基于体视学理论对共晶相的体积和分布进行了定量评估。结果如下：在超声场作用下，铸锭中心、1/2半径处和边缘的晶粒细化效率分别为33.99%、45.2%和41.68%。超声提高了Al-Cu合金元素的固溶度，其中Cu的固溶度从0.85%增加到1.42%。超声场提高了共晶相的弥散度，降低了单位体积内的体积分数和共晶相数量。超声场改善了Al-Cu合金的力学性能。