材料研究学报  2013, Vol. 27 Issue (6): 641-646

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Ti对高铬合金堆焊层组织与耐磨性的影响*

刘 跃1 张国赏1 魏世忠2 李继文1 徐流杰2 任艳艳1

1. 河南科技大学材料科学与工程学院 洛阳 471003 2. 河南科技大学河南省耐磨材料工程技术研究中心 洛阳 471003

Effect of Titanium on Microstructure and Wear Resistance of High-chromium Hardfacing Alloys

LIU Yue1 ZHANG Guoshang1** WEI Shizhong2 LI Jiwen1 XU Liujie2 REN Yanyan1

1. School of Materials Science & Engineering, Henan University of Science & Technology, Luoyang 471003 2. Henan Engineering Research Center for Wear of Material, Henan University of Science & Technology, Luoyang 471003

刘 跃, 张国赏, 魏世忠, 李继文, 徐流杰, 任艳艳. Ti对高铬合金堆焊层组织与耐磨性的影响*[J]. 材料研究学报, 2013, 27(6): 641-646.
. Effect of Titanium on Microstructure and Wear Resistance of High-chromium Hardfacing Alloys[J]. Chinese Journal of Materials Research, 2013, 27(6): 641-646.

摘要 相关文章 Metrics 全文: PDF(4073 KB)   摘要: 采用焊丝与合金粉块相结合的堆焊方法在Q235钢表面堆焊合金粉块熔覆层, 用金相显微镜、X射线衍射(XRD)、光谱仪、俄歇电子能谱、扫描电镜(SEM)、磨料磨损试验机和洛氏硬度仪等手段对高铬合金堆焊层的微观组织及耐磨性进行表征, 研究了Ti对高铬合金堆焊层组织与耐磨性的影响。结果表明: 高铬合金堆焊层组织主要由α-Fe、γ-Fe和碳化物、碳氮化物组成, 且在α-Fe基体间分布着细小的碳氮化物Tix(N, C)y; 当堆焊层中Ti含量约为3%时其洛氏硬度(HRC)达60, 磨损量为0.2066 g; 随着Ti含量的提高堆焊层的碳化物、碳氮化物的数量随之增加。碳化物、碳氮化物硬质颗粒在磨损过程中起耐磨骨架的作用, 硬质颗粒和基体的良好匹配有效阻碍磨粒对堆焊层的显微切削磨损, 从而提高了堆焊层的耐磨性。 Abstract： Alloy powders were deposited on the surface of ASTM G3101 by the method of welding wire-alloy power block hardfacing. The microstructures and wear resistance of hardfacing layer was characterized by x-ray diffraction(XRD), scanning electron microscope(SEM), energy dispersive X-ray analysis(EDS), Macroscopic hardness meter, and spectrometer. Effect of titanium on microstructure and wear resistance of high-chromium hardfacing alloys was investigated. The results show that the high quality metallurgical bonding of substrate and deposited layer was obtained by metallurgical reaction during gas metal arc welding (GMAW) process, and the microstructure of welding wire-alloy power block hardfacing layers mainly consist of (Cr, Fe)7C3, TiC carbides, Tix(C, N)y carbonitrides and α-Fe (C0.14Fe1.86 and C0.12Fe1.88 martensite)(BCT) besides little amount of retained CFe15.1 austenite (Fe-C)(FCC) matrix. The hardness increases rapidly with titanium content increasing, hardfacing layer hardness value reached 60 when it is less than 3% (mass%, similarly hereafter), on the contrary, wear loss of the hardfacing layers decrease with increasing of titanium in the hardfacing layer.      ZTFLH:  分类号 TH117   基金资助:河南省科技攻关项目112102213117资助。 服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 44.8K 链接本文: https://www.cjmr.org/CN/      或      https://www.cjmr.org/CN/Y2013/V27/I6/641 No related articles found! Viewed Full text Abstract Cited   Shared      Discussed