Sc对Al/Fe层状复合材料界面化合物生长行为的影响

doi:10.13251/j.issn.0254-6051.2024.01.012

金属热处理 ›› 2024, Vol. 49 ›› Issue (1): 84-90.DOI: 10.13251/j.issn.0254-6051.2024.01.012

Sc对Al/Fe层状复合材料界面化合物生长行为的影响

王振, 高坤元, 张小军, 聂祚仁, 黄晖, 吴晓蓝

北京工业大学材料与制造学部, 北京 100124

收稿日期:2023-08-18 修回日期:2023-11-24 发布日期:2024-02-29
通讯作者: 高坤元,教授,博士,E-mail: gaokunyuan@bjut.edu.cn
作者简介:王振(1998—),男,硕士研究生,主要研究方向为铝合金材料,E-mail: wangzhen2020@163.com。
基金资助:
国家重点研发计划(2022YFB3705802)

Effect of Sc on growth behavior of interface compounds of Al/Fe layered composites

Wang Zhen, Gao Kunyuan, Zhang Xiaojun, Nie Zuoren, Huang Hui, Wu Xiaolan

Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China

Received:2023-08-18 Revised:2023-11-24 Published:2024-02-29

摘要/Abstract

摘要： 采用SEM、EDS等手段研究了铝侧添加Sc元素对Al/Fe复合界面金属间化合物的生长、种类及组织形貌的影响。结果表明,冷轧复合的Al/Fe复合板在475~640 ℃退火1 h后均产生了连续的界面化合物,在560 ℃及以下时,金属间化合物厚度变化趋势基本一致,在560 ℃以上时,含Sc的复合板界面金属间化合物增长趋势明显变缓,厚度大幅降低,这表明Al侧添加Sc元素不能完全抑制界面金属间化合物的产生。同时,Sc元素的添加并未改变界面化合物的种类及分布,界面化合物从Al侧到Fe侧依次为FeAl₃、Fe₂Al₅、FeAl。在475 ℃时,Fe侧Fe₂Al₅相呈细小的锯齿状形貌,但整体十分平整,在580 ℃时,Fe侧Fe₂Al₅相呈粗大“指状”形貌,起伏较大。

关键词: 铝/铁复合, 微合金化, 金属间化合物

Abstract: Effect of Sc element on the growth, type and micromorphology of intermetallic compounds at the Al/Fe composite interface was studied by means of SEM, EDS and other methods. The results show that the cold-rolled composite Al/Fe composite plates produce continuous interfacial compounds after annealing at 475-640 ℃ for 1 h, and the change trend of intermetallic compound thickness at 560 ℃and below is basically the same, but above 560 ℃, the growth trend of intermetallic compounds at the interface of Sc-containing composite plates slows down significantly, and the thickness is greatly reduced. This indicates that the addition of Sc elements on the Al side does not completely inhibit the production of intermetallic compounds at the interface. At the same time, the addition of Sc elements does not change the type and distribution of interface compounds, which are FeAl₃, Fe₂Al₅ and FeAl from Al side to Fe side. The Fe₂Al₅ phase at Fe side is finely jagged when annealed at 475 ℃, but the whole morphology is very flat, however, it becomes coarse finger-like morphology and uneven when annealed at 580 ℃.

Key words: Al/Fe composite, microalloying, intermetallic compounds

中图分类号:

TG146.2⁺1

王振, 高坤元, 张小军, 聂祚仁, 黄晖, 吴晓蓝. Sc对Al/Fe层状复合材料界面化合物生长行为的影响[J]. 金属热处理, 2024, 49(1): 84-90.

Wang Zhen, Gao Kunyuan, Zhang Xiaojun, Nie Zuoren, Huang Hui, Wu Xiaolan. Effect of Sc on growth behavior of interface compounds of Al/Fe layered composites[J]. Heat Treatment of Metals, 2024, 49(1): 84-90.

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Sc对Al/Fe层状复合材料界面化合物生长行为的影响

Effect of Sc on growth behavior of interface compounds of Al/Fe layered composites

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