Effect of Self-shielded Flux Cored Wire Surfacing and In-situ Synthesis TiB2-TiC Particles on Microstructure and Properties of Surfacing Alloy
LIU Zheng-jun1, JIA Hua1,2, LI Meng2
1. School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China;
2. Applied Technology College of Dalian Ocean University, Dalian 116300, Liaoning, China
Abstract:The self-shielded flux cored wire was used to test the surface of Q235 steel, and the Fe-Cr-C-B-Ti alloy was prepared by adjusting the content of Ti in the flux cored wire.The change rule of mechanical properties of surfacing alloy was obtained through hardness and wear test. The phase composition and microstructure of the alloy were investigated by X ray diffraction (XRD) and scanning electron microscopy (SEM).The results indicate that with the increase of Ti content, TiC and TiB2 hard phase particles are formed in the surfacing layer, and TiC is preceded by TiB2 production.A large number of dispersed TiC and TiB2 can play an important role in the wear process and wear resistance of the deposited metal. The hardness of the surfacing layer is increased from 56.5HRC to 66HRC, and the wear loss weight is decreased from 0.5772g to 0.0487g when the mass fraction of Ti in the surfacing alloy is increased from 0.15% to 1.43%.
刘政军, 贾华, 李萌. 自保护药芯焊丝堆焊原位合成TiB2-TiC颗粒对堆焊合金组织性能的影响[J]. 材料工程, 2018, 46(7): 106-112.
LIU Zheng-jun, JIA Hua, LI Meng. Effect of Self-shielded Flux Cored Wire Surfacing and In-situ Synthesis TiB2-TiC Particles on Microstructure and Properties of Surfacing Alloy. Journal of Materials Engineering, 2018, 46(7): 106-112.
[1] 任艳艳,张国赏,魏世忠,等. 我国堆焊技术的发展及展望[J]. 焊接技术,2012,41(6):1-4. REN Y Y, ZHANG G S, WEI S Z, et al. Development and prospect of surfacing technology in China[J]. Welding Technology, 2012,41(6):1-4.
[2] WANG X H, HAN F, QU S Y, et al. Microstructure of the Fe-based hardfacing layers reinforced by TiC-VC-Mo2C particles[J]. Surface and Coatings Technology,2008,202(8):1502-1509.
[3] 栗卓新,宋绍朋,史传伟. 自保护药芯焊丝的技术经济特点及工程应用前景[J]. 电焊机,2011,41(2):16-21,31. LI Z X, SONG S P, SHI C W. Technical and economical characteristics and prospect of engineering application of self-shielded flux-cored wire[J]. Electric Welding Machine,2011,41(2):16-21,31.
[4] JI H K, KANG H K, SEUNG D N, et al. The effect of boron on the abrasive wear behavior of austenitic Fe-based hardfacing alloys[J]. Wear,2009,267(9/10):1415-1419.
[5] BUCHELY M F, GUTIERREZ J C, LEON L M, et al. The effect of microstructure on abrasive wear of hardfacing alloys[J]. Wear,2005,259(1):52-61.
[6] WANG Z H, WANG Q B, CUI L. Influence of cooling rate and composition on orientation of primary carbides of Fe-Cr-C hardfacing alloys[J]. Science and Technology of Welding and Joining, 2013,13(7):656-662.
[7] 王智慧,万国力,贺定勇,等. Fe-Cr-B-C堆焊合金的组织与耐磨性[J]. 材料工程,2014(9):57-62. WANG Z H, WAN G L, HE D Y, et al. Microstructures and wear resistance of Fe-Cr-B-C hardfacing alloys[J]. Journal of Materials Engineering,2014(9):57-62.
[8] BERNS H, FISCHER A. Microstructure of Fe-Cr-C hardfacing alloys with additions of Nb, Ti and B[J]. Metallography, 1987, 20(4):401-429.
[9] 马世榜,夏振伟,徐杨,等. 激光熔覆原位自生TiC颗粒增强镍基复合涂层的组织与耐磨性[J]. 材料工程,2017,45(6):24-30. MA S B, XIA Z W, XU Y, et al. Microstructure and abrasion resistance of in-situ TiC particles reinforced Ni-based composite coatings by laser cladding[J]. Journal of Materials Engineering, 2017,45(6):24-30.
[10] 周芳,朱涛,何良华. 激光熔覆TiC-TiB2原位合成复合涂层[J]. 中国表面工程,2013,26(6):29-34. ZHOU F, ZHU T, HE L H. In-situ synthesized TiC-TiB2 composite coatings prepared by laser cladding[J]. China Surface Engineering,2013,26(6):29-34.
[11] WANG X H, PAN X N, DU B S, et al. Production of in-situ TiB2+TiC/Fe composite coating from precursor containing B4C-TiO2-Al powders by laser cladding[J]. Transactions of Nonferrous Metals Society of China,2013,23(6):1689-1693.
[12] 孟君晟,吉泽升. 氩弧熔敷原位合成TiC-TiB2/Ti基复合涂层组织及性能分析[J].焊接学报,2013,34(9):67-70. MENG J S, JI Z S. Microstructure and Properties of in-situ TiC-TiB2/Ti composite coating by argon arc cladding[J]. Transactions of the China Welding Institution,2013,34(9):67-70.
[13] 尉法兵,刘海云,孟庆森,等. TiB2强化高硬度高耐磨堆焊自保护药芯焊丝堆焊层性能分析[J].焊接学报,2013,34(3):97-101. YU F B, LIU H Y, MENG Q S, et al. Performance of self-shielded flux-cored wire hardfacing layer with high hardness and abrasion resistance reinforced with TiB2[J]. Transactions of the China Welding Institution,2013,34(3):97-101.
[14] 梁英教,车荫昌. 无机物热力学数据手册[M]. 沈阳:东北大学出版社,1993:475-476. LIANG Y J, CHE Y C. Manual of inorganic thermodynamics data[M]. Shenyang:Northeastern University Press,1993:475-476.
[15] 孙培秋,朱德贵,蒋小松,等. 原位合成TiB2-TiC0.8-SiC复相陶瓷的微观组织与性能研究[J]. 无机材料学报,2013,28(4):363-368. SUN P Q, ZHU D G, JIANG X S, et al. Research on microstructures and properties of in-situ synthesis of TiB2-TiC0.8-SiC multiphase ceramics[J]. Journal of Inorganic Materials, 2013, 28(4):363-368.
[16] 宗琳,刘政军. 原位合成TiC-M7C3金属复合涂层[J]. 热加工工艺,2012,41(8):141-143. ZONG L, LIU Z J. In-situ synthesis of TiC-M7C3 metal-ceramics composite coating[J]. Hot Working Technology, 2012, 41(8):141-143.
[17] WANG Z T, ZHOU X H, ZHAO G G. Microstructure and formation mechanism of in-situ TiC-TiB2/Fe composite coating[J]. Transactions of Nonferrous Metals Society of China,2008, 18(4):831-835.