Be/2024Al复合材料的热变形行为与微观组织演化

夏一骁; 匡泽洋; 祝平; 鞠渤宇; 陈国钦; 吴平; 杨文澍; 武高辉

doi:10.1007/s12613-023-2662-1

Volume 30 Issue 11

Nov. 2023

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文章导航 > 矿物冶金与材料学报（英文） > 2023 > 30(11): 2245-2258

Yixiao Xia, Zeyang Kuang, Ping Zhu, Boyu Ju, Guoqin Chen, Ping Wu, Wenshu Yang, and Gaohui Wu, Hot deformation behavior and microstructure evolution of Be/2024Al composites, Int. J. Miner. Metall. Mater., 30(2023), No. 11, pp. 2245-2258. https://doi.org/10.1007/s12613-023-2662-1

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Yixiao Xia, Zeyang Kuang, Ping Zhu, Boyu Ju, Guoqin Chen, Ping Wu, Wenshu Yang, and Gaohui Wu, Hot deformation behavior and microstructure evolution of Be/2024Al composites, Int. J. Miner. Metall. Mater., 30(2023), No. 11, pp. 2245-2258. https://doi.org/10.1007/s12613-023-2662-1

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研究论文

Be/2024Al复合材料的热变形行为与微观组织演化

1)
哈尔滨工业大学材料科学与工程学院，哈尔滨 150001，中国
2)
哈尔滨工业大学材料科学与工程学院先进结构功能一体化材料与绿色制造技术重点实验室，哈尔滨 150001，中国
3)
高功率微波技术重点实验室，西安 710024，中国
4)
西北核技术研究所，西安 710024，中国

* 共同第一作者

通讯作者:
吴平    E-mail: wuping2007ssss@163.com

杨文澍    E-mail: yws001003@163.com

武高辉    E-mail: wugh@hit.edu.cn

文章亮点

(1) 引入了两种本构模型对Be/2024Al复合材料热变形行为进行预测

(2) 实现了对高增强体含量的Be/2024Al复合材料的热变形

(3) 研究了热变形中Be颗粒与基体的协调变形行为

中文摘要

现代航空航天对具有高比强度和高比刚度的材料的需求越来越大。Be金属具有高硬度和低密度的特点，铝合金具有可加工可变形的特点，Be/Al复合材料结合了二者的优点，是一种高比强度、高比刚度的复合材料。本文对含Be质量分数为62wt%的Be/2024Al复合材料进行了热压缩实验，变形温度为500–575ºC，变形速率为0.003–0.1 s^–1。本文中使用了应变补偿的Arrhenius模型与修正的Johnson–Cook模型来预测Be/2024Al复合材料的变形行为。结果表明Be/2024Al复合材料的变形激活能为363.364 kJ·mol^–1。与传统的陶瓷颗粒增强铝基复合材料相比，由于Be颗粒可变形的特性，使得Be/2024Al复合材料即使在超高的增强体含量下也能够实现变形。两个模型的平均相对误差表明，修正的Johnson–Cook模型更适合低温条件，而应变补偿的Arrhenius模型更适合高温条件。本文根据热压缩实验的结果，绘制了Be/2024Al复合材料的热加工图，并且在热加工图的指导下进行了热挤压实验。对比Be/2024Al复合材料挤压前后的微观组织，发现Be颗粒能与Al基体发生协调变形，Be颗粒沿挤压方向伸长。

关键词:

Research Article

Hot deformation behavior and microstructure evolution of Be/2024Al composites

+ Author Affiliations

1)
School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
2)
Key Laboratory of Advanced Structure-Function Integrated Materials and Green Manufacturing Technology, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
3)
Key Laboratory of Advanced Science and Technology on High Power Microwave, Xi'an 710024, China
4)
Northwest Institute of Nuclear Technology, Xi'an 710024, China

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
These authors contributed equally to this work.

Corresponding authors:
Ping Wu    E-mail: wuping2007ssss@163.com

Wenshu Yang    E-mail: yws001003@163.com

Gaohui Wu    E-mail: wugh@hit.edu.cn
Received: 27 December 2022; Revised: 21 April 2023; Accepted: 24 April 2023; Available online: 26 April 2023

Abstract

Abstract

The high temperature compression test of Be/2024Al composites with 62wt% Be was conducted at 500–575ºC and strain rate of 0.003–0.1 s^–1. The strain-compensated Arrhenius model and modified Johnson–Cook model were introduced to predict the hot deformation behavior of Be/2024Al composites. The result shows that the activation energy of Be/2024Al composites was 363.364 kJ·mol^–1. Compared with composites reinforced with traditional ceramics, Be/2024Al composites can be deformed with ultra-high content of reinforcement, attributing to the deformable property of Be particles. The average relative error of the two models shows that modified Johnson–Cook model was more suitable for low temperature condition while strain-compensated Arrhenius model was more suitable for high temperature condition. The processing map was generated and a hot extrusion experiment was conducted according to the map. A comparation of the microstructure of Be/2024Al composites before and after extrusion shows that the Be particle deformed coordinately with the matrix and elongated at the extrusion direction.
- Be/Al composites;
- hot deformation behavior;
- constitutive model;
- hot extrusion

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