王虎,秦晓婷,王智慧,贺定勇.等离子原位制备VC增强Al1.5CoCrFeNi高熵合金熔覆层的组织与力学性能[J].表面技术,2025,54(3):110-117.
WANG Hu,QIN Xiaoting,WANG Zhihui,HE Dingyong.Microstructure and Mechanical Properties of VC Enhanced Al1.5CoCrFeNi High-entropy Alloy Cladding Layers by Plasma in Situ Synthesis Technique[J].Surface Technology,2025,54(3):110-117 |
| 等离子原位制备VC增强Al1.5CoCrFeNi高熵合金熔覆层的组织与力学性能 |
| Microstructure and Mechanical Properties of VC Enhanced Al1.5CoCrFeNi High-entropy Alloy Cladding Layers by Plasma in Situ Synthesis Technique |
| 投稿时间：2024-03-04 修订日期：2024-05-24 |
| DOI：10.16490/j.cnki.issn.1001-3660.2025.03.009 |
| 中文关键词: 等离子熔覆 原位合成 高熵合金 VC 微观组织 力学性能 |
| 英文关键词:plasma cladding in situ synthesized high-entropy alloy VC microstructure mechanical properties |
| 基金项目:中央引导地方科技发展资金项目(246Z1816G);北华航天工业学院科研基金项目(CXPT202402) |
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| Author | Institution |
| WANG Hu | College of Materials Engineering, North China Institute of Aerospace Engineering, Hebei Langfang 065000, China;Hebei Provincial Key Laboratory of Thermal Protection Materials, Hebei Langfang 065000, China |
| QIN Xiaoting | Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China |
| WANG Zhihui | Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China |
| HE Dingyong | Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China |
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| 中文摘要: |
| 目的 制备不同含量碳化物增强BCC结构的高熵合金熔覆层，研究碳化物含量对其微观组织和力学性能的影响规律。方法 在Q235钢表面采用等离子原位合成技术制备Al1.5CoCrFeNi(VC)x(x为0、0.1、0.2、0.3)高熵合金熔覆层，研究VC含量对其物相组成、微观组织及力学性能的影响。结果 在x=0时，熔覆层为简单体心立方(BCC)固溶体结构，微观组织呈典型的树枝晶，枝晶内为富含Al、Ni的BCC固溶体，枝晶间为富含Cr、Fe的BCC固溶体。在加入V、C后(x为0.1、0.2、0.3)，物相组成转变为BCC相、原位合成的VC增强相及少量的σ相。VC呈颗粒状、长条状及十字状，主要偏聚于基体的树枝晶间，少数从枝晶内析出，且随着V、C含量的提高，VC的析出量逐渐上升。TEM结果显示，原位合成的VC增强相与基体之间的界面整洁，无反应物生成。当VC的含量x由0提高至0.3时，熔覆层的硬度由529.3HV增至829.8HV，磨损率由34.88 mg/min降至2.45 mg/min。在x=0时，熔覆层的磨损形式以微观切削为主，以多次塑性变形为辅;在原位合成VC增强相后(x为0.1、0.3)，熔覆层的磨损形式以微观切削为主。结论 原位合成VC对高熵合金起到了明显的强化作用，随着VC含量的增加(x为0~0.3)，熔覆层的显微硬度和耐磨性逐渐增加。 |
| 英文摘要: |
| The work aims to prepare in situ carbide enhanced BCC structure high-entropy alloy cladding layers, and study the effect of design content of carbide on their microstructure and mechanical properties. Therefore, in situ VC enhanced Al1.5CoCrFeNi(VC)x (x=0, 0.1, 0.2, 0.3, mole ratio) high-entropy alloy were manufactured on the Q235 steel by plasma cladding. The effect of VC design content on their phases, microstructure, and mechanical properties were analyzed. |
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