Research on microstructure evolution and mechanical properties of gradient sandwich filler metal during brazing

ZHANG Guanxing; ZHONG Sujuan; SHEN Yuanxun; DONG Hongwei; XUE Hangyan

doi:10.12073/j.hjxb.20221020001

TRANSACTIONS OF THE CHINA WELDING INSTITUTION > 2023 > 44(9): 37-43. > DOI: 10.12073/j.hjxb.20221020001

ZHANG Guanxing, ZHONG Sujuan, SHEN Yuanxun, DONG Hongwei, XUE Hangyan. Research on microstructure evolution and mechanical properties of gradient sandwich filler metal during brazing[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2023, 44(9): 37-43. DOI: 10.12073/j.hjxb.20221020001

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Research on microstructure evolution and mechanical properties of gradient sandwich filler metal during brazing

State Key Laboratory of Advanced Brazing Filler Metals & Technology, Zhengzhou Research Institute of Mechanical Engineering Co., Ltd, Zhengzhou, 450001, China

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Received Date: October 19, 2022
Available Online: July 08, 2023

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Abstract

Abstract

Sandwich composite filler metal is an important technical means to realize reliable brazing connection between cemented carbide and steel. The microstructure of the composite layer and the interface layer between the composite layer and the matrix has an important influence on the mechanical properties. The microstructure evolution of brazing joint of gradient sandwich composite filler metal under different brazing temperature and time conditions was systematically studied, and the key factors affecting the mechanical properties were analyzed. The research results showed that the interfacial formation of gradient sandwich filler metal with steel and carbide matrix could be divided into four stages: interfacial structure formation, growth, fusion and rearrangement. The CuMn2 layer in the middle of the gradient filler metal gradually changed from the initial continuous shape to an isolated island surrounded by low Mn copper solid solution with the extension of holding time. As the holding time continued, CuMn2 layer disappeared and the whole brazing joint was composed of copper solid solution, silver solid solution and silver copper eutectic. The shear strength of the brazing joint reached the highest 285 MPa when the temperature was kept at 780 ℃ for 2.5 min. At this time, the Co and Ni elements had long range diffusion and accumulated near the CuMn2 interlayer, which improved the strength and toughness of the CuMn2 interlayer. The Co-based particle strengthening phase was distributed in the root of the fracture dimple. Further extension of holding time, Co, Ni and other brazing elements began to disperse, the brazing structure coarsened, the strength decreased.
- gradient sandwich filler metal,
- interfacial diffusion,
- shear strength

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References

Yin X H, Ma Q S, Cui B, et al. Current review on the research status of cemented carbide brazing: filler materials and mechanical properties[J]. Metals and Materials International, 2020, 2: 1 − 13.

秦建, 董显, 裴夤崟, 等. 高强韧CuZnNiMn纽扣钎料钎焊截齿接头组织与性能[J]. 焊接学报, 2019, 40(8): 96 − 103.

Qin Jian, Dong Xian, Pei Yinyin, et al. Microstructure and properties of mining bit brazing joint employed by the high strength and ductility CuZnNiMn button materials[J]. Transactions of the China Welding Institution, 2019, 40(8): 96 − 103.

夏毅敏, 仝磊, 柏彬, 等. 盾构切刀硬质合金与钢基体钎焊残余应力[J]. 东北大学学报(自然科学版), 2020, 41(1): 101 − 107.

Xia Yimin, Tong Lei, Bai Bin, et al. Residual stress in soldering and brazing between cemented carbide and steel substrate of shield machine cutters[J]. Journal of Northeastern University(Nature Science), 2020, 41(1): 101 − 107.

Zhang X Z, Liu G W, Tao J N, et al. Brazing of WC–8Co cemented carbide to steel using Cu-Ni-Al alloys as filler metal: Microstructures and joint mechanical behavior[J]. Journal of Materials Science & Technology, 2018, 34(7): 1180 − 1188.

Barrena M I, Gomez De Salazar J M, Matesanz L. Interfacial microstructure and mechanical strength of WC–Co/90MnCrV8 cold work tool steel diffusion bonded joint with Cu/Ni electroplated interlayer[J]. Materials and Design, 2010, 31(7): 3389 − 3394. doi: 10.1016/j.matdes.2010.01.050

Kaiwa K, Yaoita S, Sasaki T, et al. Effects of Ni and Co additions to filler metals on Ag-brazed joints of cemented carbide and martensitic stainless steel[J]. Advanced Materials Research, 2014, 3130(922): 322 − 327.

Wang H F, Chi L H, Chang H. Effect of tin content on the microstructure and property of brazed WC-Co/CrMo alloy steel joints[J]. Advanced Materials Research, 2008, 740(47): 596 − 599.

Akbari Mousavi S A A, Sherafati P, Hoseinion M M. Investigation on wettability and metallurgical and mechanical properties of cemented carbide and steel brazed joint[J]. Advanced Materials Research, 2012, 1614(445): 759 − 764.

Sui Y W, Luo H B, Yang Lü, et al. Influence of brazing technology on the microstructure and properties of YG20C cemented carbide and 16Mn steel joints[J]. Welding in the World, 2016, 60(6): 1269 − 1275. doi: 10.1007/s40194-016-0374-0

Hasanabadi M, Shamsipur A, Najafisani H, et al. Interface structure and mechanical properties of brazing joints for WC using Ag-Cu-Zn-Ni-Mn filler metals[J]. Transactions of Nonferrous Metals Society of China, 2017, 27(12): 2638 − 2646. doi: 10.1016/S1003-6326(17)60292-9

马琳博, 王嘉琳. 硬质合金钎焊工艺分析[J]. 冶金与材料, 2021, 41(1): 185 − 186.

Ma Linbo, Wang Jialin. Analysis of cemented carbide brazing process[J]. Metallurgy and Materials, 2021, 41(1): 185 − 186.

李远星, 张晓山, 朱宗涛, 等. Ni元素扩散行为对硬质合金/钢钎焊接头微观组织及力学性能的影响[J]. 稀有金属材料与工程, 2017, 46(4): 1120 − 1125.

Li Yuanxing, Zhang Xiaoshan, Zhu Zongtao, et al. Effect of element Ni diffusion on microstructure and mechanical properties of brazed joints of cemented carbide and steel[J]. Rare Metal Materials and Engineering, 2017, 46(4): 1120 − 1125.

Tillmann W, Sievers N. Feasibility study of fluxless brazing cemented carbides to steel[J]. Conference Series:Materials Science and Engineering, 2017, 181(1): 012007.

李永. 层状复合钎料制备工艺研究[D]. 北京:中国机械科学研究总院集团, 2013.

Li Yong. Study of the manufacturing technology of layered composite brazing filler metal[D]. Beijing:China Academy of Machinery Science and Technology Group, 2013.

Chao J, Chen H, Zhao X, et al. Microstructure and mechanical properties of brazing bonded WC-15Co/35CrMo joint using AgNi/CuZn/AgNi composite interlayers[J]. International Journal of Refractory Metal and Hard Materials, 2018, 70: 1 − 8. doi: 10.1016/j.ijrmhm.2017.08.021

周德敬, 尹林, 张新明, 等. 轧制复合/铝/不锈钢界面金属间化合物的生长动力学[J]. 中国有色金属学报, 2012, 22(9): 2461 − 2467.

Zhou Dejin, Yin Lin, Zhang Xinming, et al. Growth kinetics of intermetallic compounds at aluminum/stainless steel interface bonded by rolling[J]. The Chinese Journal of Nonferrous Metals, 2012, 22(9): 2461 − 2467.

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Research on microstructure evolution and mechanical properties of gradient sandwich filler metal during brazing