深冷处理对钴基合金摩擦磨损性能的影响

王兴富; 李永刚; 李学楠; 师佑杰

doi:10.13433/j.cnki.1003-8728.20200344

深冷处理对钴基合金摩擦磨损性能的影响

doi: 10.13433/j.cnki.1003-8728.20200344

王兴富^{1, 2,},
李永刚^{1, 2, 3, ,},
李学楠^{1, 2},
师佑杰^{1, 2}

1.
. 太原理工大学机械与运载工程学院, 太原 030024
2.
精密加工山西重点实验室, 太原 030024
3.
山西省金属材料腐蚀与防护工程技术研究中心, 太原 030024

基金项目:

国家自然科学基金项目 51705352

中国博士后科学基金项目 2018M641682

山西省高等学校科技创新项目 2019L0139

详细信息

作者简介:
王兴富(1994-), 硕士生, 研究方向为精密零件表面光整加工, 1129514273@qq.com

通讯作者:
李永刚, 副教授, 硕士生导师, liyonggang_tyut@126.com

中图分类号: TG156
计量
- 文章访问数: 117
- HTML全文浏览量: 31
- PDF下载量: 16
- 被引次数: 0
出版历程
- 收稿日期: 2020-07-29
- 刊出日期: 2022-02-25

Effect of Cryogenic Treatment on Friction and Wear Properties of Cobalt-based Alloy

WANG Xingfu^{1, 2
,},
LI Yonggang^{1, 2, 3
, ,},
LI Xuenan^{1, 2},
SHI Youjie^{1, 2}

1.
College of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2.
Shanxi Key Laboratory of Precision Machining, Taiyuan 030024, China
3.
Engineering and Technology Research Center for Metal Material Corrosion and Protection of Shanxi Province, Taiyuan 030024, China

摘要

摘要: 将K6509钴基合金样品在-196 ℃液氮中深冷4~44 h, 通过金相分析、硬度分析等技术手段研究深冷处理后微观结构以及力学性能的变化情况, 对深冷后的钴基合金样品进行直线往复式摩擦磨损实验, 研究其摩擦因数和磨损率的变化情况。试验结果表明, 随着深冷时间的延长, 硬度基本呈逐渐提高趋势, 深冷44 h后硬度达到最高, 较未深冷样品提高了23.6%, 通过摩擦磨损试验研究, 发现经深冷后的钴基合金样品的摩擦因数曲线变得较为平稳, 平均摩擦因数明显降低, 其中DCT36钴基合金样品摩擦因数最为平稳, 并达到最低的摩擦因数, 磨损率随着深冷时间的延长先提高后降低, 其中DCT28钴基合金样品磨损率达到最高, 在加载载荷为3 N、4 N、5 N的工况下磨损率分别提高了57.91%、44.29%、27%。
- 钴基合金 /
- 深冷处理 /
- 碳化物 /
- 摩擦因数 /
- 磨损率
Abstract: K6509 cobalt-based alloy samples were cryogenically cooled in liquid nitrogen at -196 ℃ for 4-44 hours. The microstructure and hardness analysis were used to investigate the changes in microstructure and mechanical properties after cryogenic treatment, and friction coefficient and wear rate via linear reciprocating friction and wear experiment. The experimental results show that the hardness basically increased gradually with the increasing of cryogenic time. The hardness increased by 23.6% reaching the highest after 44 h. The friction coefficient curve of the cobalt-based alloy sample becomes relatively stable, and the average friction coefficient is significantly reduced after deep cooling, and the friction coefficient curve of DCT36 sample was the most stable with the lowest average friction coefficient. The wear rate increased firstly and then decreased with the increasing of cryogenic time. The wear rate of DCT28 sample reached the highest, and the wear rate increased by 57.91%, 44.29%, 27%.
- cobalt-based alloy /
- cryogenic treatment /
- carbide /
- friction coefficient /
- wear rate

HTML全文

图 1 DCT0显微组织

下载: 全尺寸图片幻灯片

图 2 磨损示意图

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图 3 不同深冷时间下的微观组织

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图 4 不同深冷时间下的硬度变化

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图 5 摩擦因数演变图

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图 6 不同载荷下的磨损率图

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表 1 K6509钴基合金化学组成 %

w(C)	w(Cr)	w(Ni)	w(W)	w(Ta)	w(Ti)	w(Zr)	w(Co)
0.6	23.5	10	7	3.5	0.2	0.5	Bal.

下载: 导出CSV

表 2 钴基合金深冷处理过程

样品	处理过程
DCT0	未进行深冷处理
DCT4	在-196 ℃液氮中深冷4 h
DCT12	在-196 ℃液氮中深冷12 h
DCT20	在-196 ℃液氮中深冷20 h
DCT28	在-196 ℃液氮中深冷28 h
DCT36	在-196 ℃液氮中深冷36 h
DCT44	在-196 ℃液氮中深冷44 h

下载: 导出CSV

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