增强体对Fe-C-Cu系粉末冶金组织及摩擦性能的影响
Effect of reinforcement on microstructure and friction properties of Fe-C-Cu system powder metallurgy
韩爱民 1赵启亮 1许晓静 2李灿 2周玉华 2韩天2
作者信息
- 1. 扬州汇峰新材料有限公司,江苏扬州 225266
- 2. 江苏大学先进制造与现代装备技术工程研究院,江苏镇江 212013
- 折叠
摘要
实验研究了 B4Cp和碳纳米管CNT增强体在自主成分设计的粉末冶金Fe-C-Cu系合金中的组织和摩擦磨损性能.通过SEM和XRD探究其组织和形貌.研究发现添加0.16％ B4Cp和0.22％ CNT的增强体会抑制珠光体的生成,B4Cp的抑制程度最严重,CNT增强体试样相较未添加增强体试样的珠光体稍微减少.未添加增强体试样、CNT试样和B4Cp试样的硬度分别为115.45 HV、103.58 HV和100.41 HV.增强体的添加在Fe-C-Cu系粉末冶金中未生成新物相,CNT增强体对Fe-C-Cu系粉末冶金的强化效果较好.而B4Cp增强体对Fe-C-Cu系粉末冶金的强化效果则起到反作用.在摩擦磨损性能方面,添加CNT增强体试样的摩擦因数最低,仅为0.05左右,磨痕宽度仅为537.8 μm.未添加增强体试样的摩擦因数为0.15左右,磨痕宽度为992.4 μm,而B4Cp增强体的摩擦因数超过0.2,磨痕宽度为978.2 μm.
Abstract
In this paper,the microstructure and friction and wear properties of B4Cp and carbon nanotube CNT reinforcements in powder metallurgy Fe-C-Cu alloys with independent composition design were studied. The structure and morphology were investigated by SEM and XRD. It is found that the addition of 0.16％ B4Cp and 0.22％ CNT reinforcements inhibite the formation of pearlite,and the degree of inhibition of B4Cp is the most se-rious. Compared with the samples without reinforcements,the pearlite of CNT reinforcement samples is slightly reduced. The hardness of samples without reinforcement,CNT samples and B4Cp samples are 115.45HV,103.58HV,100.41HV. The addition of reinforcements does not generate new phases in Fe-C-Cu-based powder metallurgy,and CNT reinforcements have a better strengthening effect on Fe-C-Cu-based powder metallurgy. The B4Cp reinforcement has a negative effect on the strengthening effect of Fe-C-Cu powder metallurgy. In terms of friction and wear properties,the friction coefficient of the sample added with CNT reinforcement is the lowest,only about 0.05,and the wear scar width is only 537.8 μm. The friction coefficient of the sample without rein-forcement is about 0.15,and the wear scar width is 992.4 μm. The friction coefficient of the B4Cp reinforcement exceeds 0.2,and the wear scar width is 978.2 μm.
关键词
粉末冶金/Fe-C-Cu/B4Cp/CNT/摩擦磨损Key words
powder metallurgy/Fe-C-Cu/B4Cp/CNT/wear and tear引用本文复制引用
基金项目
扬州市产业前瞻与共性关键技术(YZ2021008)
出版年
2024
NETL
NSTL
万方数据