Page 31 - 《摩擦学学报》2020年第5期

第 40 卷 第 5 期 摩 擦 学 学 报 Vol 40 No 5
2020 年 9 月 Tribology Sept, 2020

DOI: 10.16078/j.tribology.2019220

氮合金化堆焊合金往复式摩擦磨损

行为的研究

*
李嘉祺, 杨 可 , 王秋雨, 冒志伟, 徐 亮, 张可召, 包晔峰, 蒋永锋
(河海大学 机电工程学院，江苏 常州 213022)

摘 要: 在马氏体不锈钢中引入氮，通过铌、钛固氮制备氮合金化堆焊合金. 利用往复式摩擦磨损试验机测试加氮和
未加氮两种堆焊合金在不同载荷(5、10和15 N)下的摩擦磨损性能，研究了其摩擦磨损行为. 结果表明：在摩擦磨损
过程中，堆焊合金表面承受周期性载荷，摩擦表面出现明显的切削痕和塑性变形，其磨损机制以磨粒磨损和表面疲
劳磨损为主. 氮合金化堆焊合金中，碳氮化物沿马氏体基体、晶界弥散析出，起到了明显的细晶强化和弥散强化作
用，增强了基体的塑性变形抗力以及抵御磨粒磨损的能力，使磨损表面切削痕数量更少、深度更浅，抗疲劳剥落现
象得到明显改善.
关键词: 碳氮化物; 堆焊合金; 摩擦磨损行为; 细晶强化; 弥散强化
中图分类号: TG442.3 文献标志码: A 文章编号: 1004-0595(2020)05–0586–07

Friction and Wear Behavior of Nitrogen-Alloying
Hardfacing Alloy

*
LI Jiaqi, YANG Ke , WANG Qiuyu, MAO Zhiwei, XU Liang, ZHANG Kezhao,
BAO Yefeng, JIANG Yongfeng

(College of Mechanical and Electrical Engineering, Hohai University, Jiangsu Changzhou 213022,China)
Abstract: The nitrogen-alloying hardfacing alloy was prepared by substituting carbon atoms with nitrogen atoms and
adding elements niobium and titanium. Its friction and wear properties under different loads (5, 10 and 15 N) were
investigated. The results indicated the main wear mechanisms involved plastic deformation and material removal by
micro-cutting and delamination. In addition, the depth and cross-sectional area of the wear scar on the worn surface were
positively related to the load while the wear rate was negatively correlated with the load. The carbonitride particles with
small size were not liable to detach and peel off from the matrix due to the strongly bond strength with the matrix,
leading to low material remove because they are hard enough to bear the load. Moreover, large amount of fine-dispersed
carbonitride particles effectively increased the hardness and strength of the matrix, refined the martensite matrix, and
hence contributing to a better wear resistance. As a result, the wear of the matrix was reduced because of the restrained
effect of the carbonitride particles to large-scale layered flaking by abrasives.
Key words: carbonitride; hardfacing alloy; friction and wear behavior; fine-grained strengthening; dispersion
strengthening

Received 7 November 2019, revised 19 February 2020, accepted 28 February 2020, available online 28 September 2020.
*Corresponding author. E-mail: yangke_hhuc@126.com, Tel: +86-519-85192035.
The project was supported by the National Natural Science Foundation of China(51101050), the Fundamental Research Funds for
Central Universities(2018B59714) and Key Research and Development Program of Changzhou, China(CE20205046).
国 家 自 然 科 学 基 金 项 目 (51101050),中 央 高 校 基 本 科 研 业 务 费 专 项 资 金 (2018B59714)和 常 州 市 重 点 研 发 计 划 项 目
（CE20205046）资助.