Effect of TiN on microstructure and wear resistance of Fe-Cr-C hardfacing alloy

被引：0

作者：

Liu Z. ^{[1
]}

Li D. ^{[1
]}

Wang W. ^{[1
]}

Su Y. ^{[1
]}

机构：

[1] Shenyang University of Technology, Shenyang

来源：

Hanjie Xuebao/Transactions of the China Welding Institution | 2019年 / 40卷 / 10期

关键词：

Hardfacing alloy; Thermodynamics; Two-dimensional misfit; Wear resistance;

D O I：

10.12073/j.hjxb.2019400256

中图分类号：

学科分类号：

摘要：

Fe-Cr-C-Ti-N and Fe-Cr-C Surfacing layers were prepared by flux cored wires. The effect of TiN on the wear resistance and microstructure of the surfacing layer was discussed. The rockwell hardness tester was used to test the macrohardness of the surfacing layer. The abrasive wear test of the surfacing layer is carried out by the wet grinding wheel wear tester. Using X ray diffractometer (XRD), scanning electron microscope (SEM), energy dispersive spectrometer (EDS), transmission electron microscopy (TEM) and other equipment for testing and analysis. The results showed that the primary M7C3 in the surfacing layer containing TiN was significantly smaller than that without TiN and the hardness and wear resistance of the surfacing layer were also improved. Through thermodynamic calculation, TiN is prior to precipitation of M7C3 in molten pool cooling process. According to the dynamics calculations, the two-dimensional misfit of TiN/M7C3 is 8.43%. TiN can be used as a heterogeneous nucleation site for primary M7C3, which refines the M7C3 grains. © 2019, Editorial Board of Transactions of the China Welding Institution, Magazine Agency Welding. All right reserved.

引用

页码：15 / 19

页数：4

共 10 条

[1]

Zhang Y., Cui L., He D., Et al., Effect of B on microstructure and wear resistance of Fe-Cr-C hardfacing alloy, Transactions of the China Welding Institution, 35, 3, pp. 89-92, (2014)

[2]

Liu Y., Zhang G., Wei S., Research of nitride alloy hardfacing, Welding Technology, 41, 12, pp. 1-4, (2012)

[3]

Zhong C., Bao Y., Cheng H., Effect of N element on resistant-corrosion properties of cladding deposited stainless steel, Electric Welding Machine, 48, 5, pp. 101-104, (2018)

[4]

Li Q.T., Lei Y.P., Fu H.G., Et al., Microstructure and mechanical properties of in situ (Ti, Nb)Cp/Fe-based laser composite coating prepared with different heat inputs, Rare Metals, 37, 10, pp. 852-858, (2018)

[5]

Liu Z., Li L., Su Y., Et al., Effects of boron on the microstructure and properties of plasma-clad high boron iron base alloy, Transactions of the China Welding Institution, 33, 1, pp. 45-48, (2012)

[6]

He Y., Song Q., Sun K., Et al., Microstructure and properties of in-situ chromium carbide composite coating by laser cladding, China Welding, 27, 4, pp. 10-17, (2018)

[7]

He Q., Xu Q., Xiong Z., Et al., Microstructure and properties of high carbon and high chrome wear resistant surfacing alloy, Electric Welding Machine, 46, 9, pp. 20-23, (2016)

[8]

Bruce L.B., The effect of carbide and nitride additions on the heterogeneous nucleation behavior of liquid iron, Metallurgical Transactions, 1, 7, pp. 1987-1995, (1970)

[9]

Wan X., Li G., Wu K., In-situ observation of grain refinement by TiN particles in the simulated coares-grained heat-affected zong of a high-strength low-alloy steel, Journal of Beijing University of Science and Technology, 38, 3, pp. 371-378, (2016)

[10]

Zhang P., Zhou Y., Yang J., Et al., Optimization on mechanical properties of Fe7-xCrxC3, carbides by first-principles investigation, Journal of Alloys & Compounds, 560, pp. 49-53, (2013)

← 1 →