碳含量对等离子转移弧焊制备C<i><sub>x</sub></i>CrFeMnNi高熵合金熔覆层组织和性能的影响

卢威; 魏仕勇; 王超敏; 谌昀; 罗儒凯; 刘文政

doi:10.11973/jxgccl202310012

碳含量对等离子转移弧焊制备C_xCrFeMnNi高熵合金熔覆层组织和性能的影响

1. 张家界航空工业职业技术学院航空制造学院, 张家界 427000;
2. 江西省科学院应用物理研究所, 南昌 330092;
3. 南昌大学物理与材料学院, 南昌 330090

基金项目:

2021湖南省教育厅科学研究项目(21C1543)

江西省科技对外合作项目(20203BDH80W008)

江西省科学院省级科技计划项目包干制项目(2021YSBG22003)

详细信息

作者简介:
卢威(1980-),男,贵州贵阳人,副教授,硕士

通讯作者:
魏仕勇研究员

中图分类号: TG113
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出版历程
- 收稿日期: 2023-03-19
- 修回日期: 2023-09-18
- 刊出日期: 2023-10-19

Influence of Canbon Content on Microstructure and Properties of C_xCrFeMnNi High-Entropy Alloy Cladding Layer Fabricated by Plasma Transferred Arc

1. School of Aeronautical Manufacture, Zhangjiajie Institute of Aeronautical Engineering, Zhangjiajie 427000, China;
2. Institute of Applied Physics, Jiangxi Academy of Sciences, Nanchang 330092, China;
3. School of Physics and Materials Science, Nanchang University, Nanchang 330090, China

摘要

摘要: 采用等离子转移弧焊制备了C_xCrFeMnNi(x=0.2,0.4,0.6,0.8,1.0,物质的量比)高熵合金熔覆层,研究了碳含量对熔覆层的宏观形貌、物相组成、显微组织和性能的影响。结果表明:当x为0.4,0.8,1.0 时,熔覆层成形质量较好,无明显的气孔、凹坑、黏粉等缺陷;C_xCrFeMnNi高熵合金熔覆层组织均包含FCC树枝晶和(Cr,Fe)C碳化物,当x为0.6~1.0时,还析出了Cr₇C₃碳化物;随着碳含量增加,碳化物含量增加,熔覆层的平均显微硬度升高,摩擦因数和磨损量均减小;当x为1.0时,熔覆层的平均硬度最高,为368 HV,摩擦因数和磨损量最小,分别为0.541和1.38 mg。
- 无钴高熵合金 /
- 等离子转移弧焊 /
- 碳含量 /
- 显微组织 /
- 性能
Abstract: C_xCrFeMnNi (x=0.2,0.4,0.6,0.8,1.0,mole ratio) high-entropy alloy cladding layers were prepared by plasma transferred arc welding. The effects of carbon content on the macroscopic morphology, phase composition, microstructure and properties of the cladding layer were studied. The results show that when x was 0.4, 0.8 and 1.0, the forming quality of the cladding layer was relatively good, and there were no obvious defects such as pores, pits and sticky powder. The microstructure of C_xCrFeMnNi high-entropy alloy cladding layer consisted of FCC dendrites and (Cr, Fe) C carbide, and Cr₇C₃ carbide was also precipitated when x was 0.6-1.0. With the increase of carbon content, the carbide content and the average microhardness of the cladding layer increased, and the friction coefficient and wear amount decreased. When x was 1.0, the average hardness of the cladding layer was the highest of 368 HV, and the friction coefficient and wear amount were the smallest of 0.541 and 1.38 mg, respectively.
- high-entropy alloy without Co /
- plasma transferred arc welding /
- carton content /
- microstructure /
- property

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