Page 63 - 理化检验-物理分册2024年第十一期

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试验与研究 DOI:10.11973/lhjy-wl240208

含镍包 WC 铁基合金涂层显微组织和摩擦磨损性能

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汪志刚 ，何 群 ，郭 岩 ，吴静沛 ，熊宗群 ，王光乐 2
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（1.杭州华电半山发电有限公司，杭州 310015；2.华电电力科学研究院有限公司，杭州 310030）
摘 要：为改善15Cr1Mo1V钢表面的力学性能和摩擦磨损性能，以铁基合金粉和镍包WC颗粒
的混合物为原料，采用激光熔覆技术在15Cr1Mo1V钢表面制备含镍包WC铁基合金的涂层，分析了
镍包WC质量分数对铁基合金涂层的显微组织、 物相组成、力学性能、摩擦磨损性能的影响。结果表
明：镍包WC铁基合金涂层物相为Cr 23 C 6 、Fe 3 W 3 C、Fe 6 W 6 C和WC等；随着镍包WC含量增加，铁基
合金涂层的组织细化，Cr 23 C 6 和Fe 6 W 6 C析出量增大，铁基合金涂层的显微硬度、强度、韧性、塑性，
以及耐磨性能均提高；当镍包WC质量分数为30%时，铁基合金涂层的组织致密、细化效果最明显，
涂层硬度最高达到819 HV0.5，室温和高温抗拉强度分别为531，508 MPa，室温和高温屈服强度分
别为383，342 MPa，冲击吸收能量为62.2 J，耐摩擦磨损性能最佳。
关键词： 激光熔覆；镍包WC；铁基合金涂层；晶粒细化；力学性能；摩擦磨损
中图分类号：TB31；TG174.44 文献标志码：A 文章编号：1001-4012(2024)11-0047-06

Microstructure and friction and wear properties of nickel coated
WC iron based alloy coating

WANG Zhigang , HE Qun , GUO Yan , WU Jingpei , XIONG Zongqun ,WANG Guangle 2
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(1.Hangzhou Huadian Banshan Power Generation Co., Ltd., Hangzhou 310015, China;
2.Huadian Electric Power Research Institute Co., Ltd.,Hangzhou 310030, China)
Abstract: To improve the mechanical, friction and wear properties of 15Cr1Mo1V steel surface, a mixture of
iron based alloy powder and nickel coated WC particles was used as raw materials to prepare a nickel coated WC iron
based alloy coating on the surface of 15Cr1Mo1V steel using laser cladding technology. The influence of nickel coated
WC mass fraction on the microstructure, phase composition, mechanical properties, friction and wear properties of the
iron based alloy coating was analyzed. The results show that the phases of the nickel coated WC iron based alloy coating
were Cr 23 C 6 , Fe 3 W 3 C, Fe 6 W 6 C and WC. With the increased of nickel coated WC content, the microstructure of iron
based alloy coating was refined, and the precipitation of Cr 23 C 6 and Fe 6 W 6 C increased. The microhardness, strength,
toughness, plasticity and wear resistance of iron based alloy coatings were all improved. When the mass fraction of
nickel coated WC was 30%, the microstructure of the iron based alloy coating was dense and the refinement effect was
most obvious. The highest hardness of the coating reached 819 HV0.5. The tensile strength at room temperature and
high temperature was 531, 508 MPa, and the yield strength at room temperature and high temperature was 383, 342 MPa.
The impact absorption energy was 62.2 J, and the friction and wear resistance performance was the best.
Keywords: laser cladding; nickel coated WC; iron based alloy coating; grain refinement; mechanical property;
friction and wear

低合金Cr-Mo-V钢和Cr-Mo钢被广泛用于制造 燃机机组、燃煤机组和循环流化床机组的关键部
件，主要包括 15Cr1Mo1V钢 [1-3] 、12Cr1MoV钢 [4-5] 、
收稿日期：2024-07-24 15CrMoG钢 [6-7] 等。燃气-蒸汽联合循环发电机组高
基金项目：中国华电集团有限公司科技项目（CHDKJ23-02-166）
压蒸汽联合阀阀体材料为15Cr1Mo1V铸钢件，锅炉
作者简介：汪志刚 （1977—），男，本科，工程师，主要从事热能动
冷灰斗水冷壁材料为15CrMoG钢，流化床锅炉屏式
力工程的研究工作
过热器材料为 12Cr1MoV钢。ZG15Cr1Mo1V钢是
通信作者：郭 岩，正高级工程师，主要从事金属材料表面防护
一种珠光体类耐热铸造钢，常用于制作进汽温度不
技术开发与研究工作，gy197704@163.com
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