[1]俞进辉,张一帆,魏博,等.梯度M7C3增强铁基堆焊涂层显微结构与耐磨性研究[J].燕山大学学报,2018,42(3):225-233.[doi:10.3969/j.issn.1007-791X.2018.03.006]
 YU Jinhui,ZHANG Yifan,WEI Bo,et al.Investigation on microstructure and abrasion resistance of gradient M7C3 reinforced arc hardfaced coatings[J].Journal of YanShan University,2018,42(3):225-233.[doi:10.3969/j.issn.1007-791X.2018.03.006]
点击复制

梯度M7C3增强铁基堆焊涂层显微结构与耐磨性研究
分享到:

《燕山大学学报》[ISSN:1007-791X/CN:13-1219/N]

卷:
42
期数:
2018年第3期
页码:
225-233
栏目:
机械工程
出版日期:
2018-05-31

文章信息/Info

Title:
Investigation on microstructure and abrasion resistance of gradient M7C3 reinforced arc hardfaced coatings
文章编号:
1007-791X(2018)03-0225-09
作者:
俞进辉1张一帆2魏博12刘文英1齐效文23周野飞23*
1.秦皇岛港股份有限公司,河北 秦皇岛 066004;2.燕山大学 机械工程学院,河北 秦皇岛 066004;3.燕山大学 极端条件下机械结构和材料科学国防重点学科实验室,河北 秦皇岛 066004
Author(s):
 YU Jinhui1ZHANG Yifan2WEI Bo12LIU Wenying1QI Xiaowen23ZHOU Yefei23
1.Qinhuangdao Port Co. Ltd.,Qinhuangdao,Hebei 066004,China; 2.School of Mechanical Engineering,Yanshan University,Qinhuangdao,Hebei 066004,China;3.National Defense Key Discipline Laboratory of Mechanical Structure and Materials Science under Extreme Conditions,Yanshan University,Qinhuangdao,Hebei 066004,China
关键词:
涂层耐磨性显微结构
Keywords:
coatingabrasion resistancemicrostructure
分类号:
TG455
DOI:
10.3969/j.issn.1007-791X.2018.03.006
文献标志码:
A
摘要:
采用电弧堆焊工艺在Q235钢板表面制备了不同成分的M7C3增强铁基堆焊涂层,采用X射线衍射仪(XRD)、金相显微镜(OM)、扫描电子显微镜(SEM)对M7C3增强铁基堆焊涂层的物相和微观结构进行表征,并通过“绝热法”和定量金相方法对堆焊涂层中组成相进行定量统计。采用显微硬度计和纳米压痕仪对堆焊涂层的硬度梯度和微观硬度进行测试,采用自制磨粒磨损试验机和冲蚀磨损试验机对堆焊涂层的耐磨性进行评价。结果表明,M7C3增强铁基堆焊涂层显微组织主要由初生(Cr,Fe)7C3碳化物和共晶(Cr,Fe)7C3/γ-Fe+ α-Fe基体组成。随堆焊涂层中碳含量上升,初生碳化物尺寸增大、体积占比增加、稀释区厚度降低。与此同时,堆焊涂层抵抗低应力磨粒磨损的耐磨性逐渐增强,抵抗高应力冲蚀磨损的耐磨性逐渐变差。碳化物分布及其与基体的匹配是决定涂层耐磨性的重要因素。涂层中六棱棒状结构的初生(Cr,Fe)7C3碳化物硬度为21.4±0.3 GPa,而断续网状结构的共晶(Cr,Fe)7C3碳化物硬度为18.8±0.3 GPa。
Abstract:
The Fe-Cr-C surfacing coating with different compositions was prepared on the surface of Q235 steel by arc welding process. The microstructure and wear resistance of Fe-Cr-C arc surfacing coating was characterized by X-ray diffraction (XRD), metallographic microscope (OM) and scanning electron microscopy(SEM). The composition phase of the surfacing coating were quantitatively analyzed by adiabatic method and quantitative metallographic method. The microhardness tester and nanoindenter were used to test the hardness gradient and microhardness of the surfacing coating. The abrasion resistance of the surfacing coating was evaluated by self-made abrasive wear tester and erosion tester. The results show that the microstructure of Fe-Cr-C based surfacing coating is mainly composed of primary (Cr, Fe) 7C3 carbides and eutectic (Cr, Fe) 7C3 / γ-Fe + α-Fe matrix. As the carbon content in the surfacing coating increases, the size of the primary carbides increases, the volume proportion increases, and the thickness of the dilution zone decreases. At the same time, the wear resistance of the surfacing coating against low stress abrasive wear gradually increases, and the wear resistance against high stress erosion wear gradually deteriorates. Carbide distribution and matrix matching are the important factors that determine the wear resistance of surfacing coatings. The hardness of (Cr , Fe) 7C3 carbide with hexagonal rod shape is 21.4±177; 0.3 GPa, while the discontinuity mesh eutectic (Cr , Fe) 7C3 carbide hardness of 18.8±177; 0.3 GPa.

相似文献/References:

[1]杨 静,王天生,张 冰.高碳低合金钢低温贝氏体组织及其耐磨性研究[J].燕山大学学报,2011,(5):427.[doi:10.3969/j.issn.1007-791X.2011.05.010]
 YANG Jing,WANG Tian-sheng,ZHANG Bing.Study on low-temperature bainitic microstructures and its wear resistance of low-alloy high-carbon steel[J].Journal of YanShan University,2011,(3):427.[doi:10.3969/j.issn.1007-791X.2011.05.010]
[2]杨庆祥,周野飞,杨育林,等.Fe-Cr-C系耐磨堆焊合金研究进展[J].燕山大学学报,2014,(3):189.[doi:10.3969/j.issn.1007-791X.2014.03.001]
 YANG Qing-xiang,ZHOU Ye-fei,YANG Yu-lin,et al.Research progress of wear-resistant Fe-Cr-C hardfacing alloys[J].Journal of YanShan University,2014,(3):189.[doi:10.3969/j.issn.1007-791X.2014.03.001]
[3]李洪波,韩金成,顾勇飞,等.T10钢表面HVOF喷涂WC-10Co-4Cr涂层的耐磨性研究[J].燕山大学学报,2016,(1):022.[doi:10.3969/j.issn.1007-791X.2016.01.004]
 LI Hong-bo,HAN Jin-cheng,GU Yong-fei,et al.Abrasive resistance of WC-10Co-4Cr coating deposited on T10 steel surface by HVOF[J].Journal of YanShan University,2016,(3):022.[doi:10.3969/j.issn.1007-791X.2016.01.004]
[4]李洪波,王依敬,顾勇飞,等.H13钢表面喷涂Cr3C2-NiCr和Ni60A涂层的结合强度及耐磨性研究[J].燕山大学学报,2017,41(6):496.[doi:10.3969/j.issn.1007-791X.2017.06.003]
 LI Hongbo,WANG Yijing,GU Yongfei,et al.Bonding strength and wear resistance of Cr3C2-NiCr and Ni60A thermal spray coatings on H13 steel surface[J].Journal of YanShan University,2017,41(3):496.[doi:10.3969/j.issn.1007-791X.2017.06.003]

备注/Memo

备注/Memo:
收稿日期:2017-12-12      责任编辑:温茂森
基金项目:家自然科学基金资助项目(51705447);河北省自然科学基金资助项目(E2015203156); 燕山大学博士基金资助项目(B871)
作者简介:俞进辉(1969-),男,河北秦皇岛人,高级工程师,主要研究方向为港口输送关键技术;*通信作者:周野飞(1985-),男,山东平度人,博士,副教授,主要研究方向为表面工程与增材制造,Email:yfzhou@ysu.edu.cn
更新日期/Last Update: 2018-07-16