Effect of interlayer thickness on the microstructure and strength of WC-Co/Invar/316L steel joints prepared by fibre laser welding

被引：23

作者：

Yin, Guotao ^{[1
]}

Xu, Peiquan ^{[1
,2
]}

Gong, Hongying ^{[1
]}

Cui, Haichao ^{[2
]}

Lu, Fenggui ^{[2
]}

机构：

[1] Shanghai Univ Engn Sci, Coll Mat Engn, Shanghai 201620, Peoples R China

[2] Shanghai Jiao Tong Univ, Shanghai Key Lab Mat Laser Proc & Modificat, Shanghai 200240, Peoples R China

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2018年 / 255卷

基金：

中国国家自然科学基金;

关键词：

WC-Co; Stainless steel; Laser welding; Bend strength; CEMENTED CARBIDES; WC-CO; TEMPERATURE; INDUCTION; ALLOY; PHASE; METAL;

D O I：

10.1016/j.jmatprotec.2017.12.030

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Increasing the thickness of the Invar (Ni42Fe50.9C0.6Mn3.5Nb3) interlayer from 1 to 1.5 mm resulted in a continuous metallurgical bonding, free of voids and oxide films. Invar as a pre-placed buffer also led to higher bending strength because of the stress relaxation. When the thickness was increased to 2 mm, the porosity in the fusion zone increased and cracks developed near the fusion boundary on the WC-Co side, lowering the strength. The fusion boundary, heat affected zone and the fusion zone on the WC-Co side were susceptible to cracking. Transmission electron microscopy revealed high densities of dislocations. Energy dispersive spectroscopy suggested that long-range solute diffusion occurred inside the WC grains and at the WC/Fe (Ni)/WC interfaces.

引用

页码：319 / 332

页数：14

共 21 条

[1] Microstructure transformation and crack sensitivity of WC-Co/steel joint welded by electron beam [J].

Chen, Guoqing ;

Zhang, Binggang ;

Wu, Zhenzhong ;

Shu, Xi ;

Feng, Jicai .

VACUUM, 2017, 139 :26-32

[2] Microstructure and properties of WC-Co/3Cr13 joints brazed using Ni electroplated interlayer [J].

Chen, Hongsheng ;

Feng, Keqin ;

Wei, Shifeng ;

Xiong, Ji ;

Guo, Zhixing ;

Wang, Hui .

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, 2012, 33 :70-74

[3] Effect of brazing current on microstructure and mechanical behavior of WC-Co/AISI 1020 steel TIG brazed joint [J].

Cheniti, B. ;

Miroud, D. ;

Badji, R. ;

Allou, D. ;

Csanadi, T. ;

Fides, M. ;

Hvizdos, P. .

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, 2017, 64 :210-218

[4]

Exner H. E., 1979, International Metals Reviews, V24, P149

[5] Kinetics of the formation of metal binder gradient in WC-Co by carbon diffusion induced liquid migration [J].

Guo, Jun ;

Fang, Zhigang Zak ;

Fan, Peng ;

Wang, Xu .

ACTA MATERIALIA, 2011, 59 (11) :4719-4731

[6] Rapid diffusion bonding of WC-Co cemented carbide to 40Cr steel with Ni interlayer: Effect of surface roughness and interlayer thickness [J].

Guo, Yajie ;

Wang, Yuqing ;

Gao, Bingxiang ;

Shi, Zhongqi ;

Yuan, Zhanwei .

CERAMICS INTERNATIONAL, 2016, 42 (15) :16729-16737

[7] Effect of temperature on the microstructure and bonding strength of partial transient liquid phase bonded WC-Co/40Cr joints using Ti/Ni/Ti interlayers [J].

Guo, Yajie ;

Gao, Bingxiang ;

Liu, Guiwu ;

Zhou, Tingting ;

Qiao, Guanjun .

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, 2015, 51 :250-257

[8] Effect of brazing temperature and holding time on joint properties of induction brazed WC-Co/carbon steel using Ag-based alloy [J].

Jiang, Chao ;

Chen, Hui ;

Wang, Qiuying ;

Li, Yuanxing .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2016, 229 :562-569

[9]

JONSSON H, 1972, POWDER METALL, V15, P1

[10] Interface and Bond Strength of Brazing Cemented Carbide K20 to Alloy Steel AISI 4140 by High-Frequency Induction [J].

Ju, Jia ;

Xue, Feng ;

Zhou, Jian ;

Bai, Jing ;

Sun, Liuxia .

MATERIALS AND MANUFACTURING PROCESSES, 2016, 31 (08) :1052-1060

← 1 2 3 →