<strong>FeCoCrNiMn/6061</strong>铝基复合材料的组织性能

doi:10.11901/1005.3093.2024.330

材料研究学报

2025, Vol. 39

Issue (5): 353-361 DOI: 10.11901/1005.3093.2024.330

研究论文

本期目录 | 过刊浏览

FeCoCrNiMn/6061铝基复合材料的组织性能

胡勇(

), 路世峰, 杨滔, 潘春旺, 刘林成, 赵龙志, 唐延川, 刘德佳, 焦海涛

华东交通大学材料科学与工程学院南昌 330013

Microstructure and Properties of FeCoCrNiMn/6061 Al-alloy Matrix Composites

HU Yong(

), LU Shifeng, YANG Tao, PAN Chunwang, LIU Lincheng, ZHAO Longzhi, TANG Yanchuan, LIU Dejia, JIAO Haitao

School of Materials Science and Engineering, East China Jiaotong University, Nanchang 330013, China

引用本文:

胡勇, 路世峰, 杨滔, 潘春旺, 刘林成, 赵龙志, 唐延川, 刘德佳, 焦海涛. FeCoCrNiMn/6061铝基复合材料的组织性能[J]. 材料研究学报, 2025, 39(5): 353-361.
Yong HU, Shifeng LU, Tao YANG, Chunwang PAN, Lincheng LIU, Longzhi ZHAO, Yanchuan TANG, Dejia LIU, Haitao JIAO. Microstructure and Properties of FeCoCrNiMn/6061 Al-alloy Matrix Composites[J]. Chinese Journal of Materials Research, 2025, 39(5): 353-361.

全文: PDF(13004 KB) HTML

摘要:

用真空热压烧结工艺制备了FeCoCrNiMn/6061铝基复合材料，使用扫描电子显微镜(SEM)、能谱分析(EDS)、XRD谱和万能试验机等手段表征其微观组织和力学性能，研究了FeCoCrNiMn 颗粒对其性能的影响。结果表明：这种复合材料中的FeCoCrNiMn颗粒与6061铝合金基体界面结合良好，界面结合处有厚度约为0.5 μm的扩散层。随着FeCoCrNiMn 颗粒体积分数的提高材料的布氏硬度、屈服强度和抗拉强度随之提高，延伸率降低。FeCoCrNiMn颗粒体积分数为20%的材料，其屈服强度和抗拉强度分别为137.53 MPa、186.00 MPa，比6061铝合金分别提高了71.12%和24.41%。FeCoCrNiMn/6061铝基复合材料的强化机制，是热膨胀系数错配强化、细晶强化和载荷转移强化，其中热膨胀系数错配强化的贡献最大。

关键词 ：复合材料, FeCoCrNiMn颗粒, 铝基复合材料, 热压烧结, 微观组织, 力学性能

Abstract：

Novel composites of FeCoCrNiMn particle reinforced 6061 Al-alloy matrix (FeCoCrNiMn/6061 Al-alloy)were prepared by vacuum hot-pressing sintering technique. The microstructure of the composites was studied by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD). The mechanical properties of the composites were measured by universal testing machine. The results indicate that the interface between FeCoCrNiMn particles and the 6061 Al-alloy matrix is well bonded, with a diffusion layer of approximately 0.5 μm at the interface. With the increase of the volume fraction of FeCoCrNiMn particles, the Brinell hardness, yield strength and tensile strength of the composites increase gradually, while the elongation at break decreases gradually. When the volume fraction of FeCoCrNiMn particles is 20%, the yield strength and tensile strength reach 137.53 MPa and 186.00 MPa, respectively, which are 71.12% and 24.41% higher than 6061 Al-alloy. The strengthening mechanisms of FeCoCrNiMn/6061 Al-alloy matrix composites may mainly be thermal mismatch strengthening, fine-grain strengthening and load transfer strengthening, among which the thermal mismatch strengthening contributes the most.

Key words： composite FeCoCrNiMn particles aluminum matrix composites hot press sintering microstructure mechanical property

收稿日期: 2024-07-27

ZTFLH:

TB331

基金资助:国家自然科学基金(51865011);江西省自然科学基金(20224BAB214048)

通讯作者: 胡勇，教授，huyong@ecjtu.edu.cn，研究方向为金属及其复合材料

Corresponding author: HU Yong, Tel: 13576012078, E-mail: huyong@ecjtu.edu.cn

作者简介: 胡勇，男，1982年生，博士

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	焦海涛
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https://www.cjmr.org/CN/10.11901/1005.3093.2024.330 或 https://www.cjmr.org/CN/Y2025/V39/I5/353

图1 6061、FeCoCrNiMn 和FeCoCrNiMn + 6061粉末的形貌

Volume fraction of FeCoCrNiMn particles	0%	4%	8%	12%	16%	20%
$ρ t$ / g·cm^-3	2.72	2.935	3.15	3.366	3.581	3.796
$ρ a$ / g·cm^-3	2.677	2.881	3.076	3.284	3.471	3.669

表1 FeCoCrNiMn/6061铝基复合材料的实际密度和理论密度

图2 FeCoCrNiMn /6061铝基复合材料的致密度

图3 FeCoCrNiMn/6061铝基复合材料的显微组织

图4 FeCoCrNiMn/6061铝基复合材料的晶粒尺寸分布

图5 6061铝合金和其体积分数为12%的FeCoCrNiMn/6061铝基复合材料的XRD谱

图6 FeCoCrNiMn/6061铝基复合材料元素的EDS分析

图7 FeCoCrNiMn/6061铝基复合材料的界面层EDS线扫描分析

图8 FeCoCrNiMn/6061铝基复合材料的布氏硬度

图9 FeCoCrNiMn/6061铝基复合材料的拉伸应力-应变曲线

图10 FeCoCrNiMn/6061铝基复合材料的拉伸断口形貌

图11 各种强化机制对FeCoCrNiMn/6061铝基复合材料屈服强度的贡献

图12 FeCoCrNiMn/6061铝基复合材料的屈服强度预测曲线和实验值

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