Microstructure and Properties of Al-Si-Cu Die Casting Aluminum Alloy Brazed by Zn-Al Brazing Filler Metals

WANG Weipan; LU Quanbin; LEI Xiaowei; FANG Naiwen; LIN Sanbao; LI Bobo

doi:10.3969/j.issn.1674-6457.2025.06.010

PDF(9725 KB)

Journal of Netshape Forming Engineering ›› 2025, Vol. 17 ›› Issue (6) : 89-96. DOI: 10.3969/j.issn.1674-6457.2025.06.010

Precision Brazing

Microstructure and Properties of Al-Si-Cu Die Casting Aluminum Alloy Brazed by Zn-Al Brazing Filler Metals

WANG Weipan¹, LU Quanbin^1*, LEI Xiaowei², FANG Naiwen³, LIN Sanbao⁴, LI Bobo⁵

Author information +

History +

Abstract

The work aims to study the effect of Zn-Al filler metals with different Al contents on the microstructure and mechanical properties of AC4B die casting aluminum alloy of Al-Si-Cu series, with the aim of providing technical references for brazing of die casting aluminum alloys and applications. Metallographic microscope (OM), electron scanning electron microscope (SEM) and energy dispersive spectrometry (EDS) were used to analyze the structure of base metal, brazed joint. A compression shear test of brazed joint was carried out by universal electronic testing machine, and the fracture surfaces were analyzed. Zn-Al brazing metal of different composition could obtain dense brazing structure. The brazed joint structure was mainly composed of Zn solid solution/Al-based solid solution, Zn-Al eutectic and Si. The shear strength of the brazing joint increased with the increase of the Al content in brazing filler metal. The shear strength of 98Zn02Al filler metal was the lowest, reaching 92 MPa. The shear strength of 85Zn15Al filler metal was the highest, reaching 112 MPa. The fractures of the shear specimens all occurred at the position of brazing joints, and the fractures were flat without obvious plastic deformation. The fracture had obvious cleavage characteristics and might be brittle fracture. By using Zn-Al brazing filler metal to brazing the die-cast aluminum alloy, a relatively dense increase joint is obtained, which can provide certain technical references for the subsequent brazing research of the die casting aluminum alloy.

Key words

Zn-Al brazing filler metals / die casting aluminum alloys / brazing / microstructure / shear strength

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

WANG Weipan, LU Quanbin, LEI Xiaowei, FANG Naiwen, LIN Sanbao, LI Bobo. Microstructure and Properties of Al-Si-Cu Die Casting Aluminum Alloy Brazed by Zn-Al Brazing Filler Metals[J]. Journal of Netshape Forming Engineering. 2025, 17(6): 89-96 https://doi.org/10.3969/j.issn.1674-6457.2025.06.010

References

[1] 刘羽, 段保华, 陈光耀, 等. 压铸铝合金的发展历史和未来展望[J]. 材料导报, 2023, 37(S2): 348-357.
LIU Y, DUAN B H, CHEN G Y, et al.Development History and Future Prospect of Die-Casting Aluminum Alloy[J]. Materials Reports, 2023, 37(S2): 348-357.
[2] LIU D S, XU J H, LI X H, et al.Influence of Al Foil Interlayer on Performance of Vacuum Diffusion Bonding Joint of 6061 Aluminium Alloy[J]. Journal of Iron and Steel Research International, 2024, 31(10): 2404-2412.
[3] 宋成猛, 侯东锋, 王健, 等. 浅述压铸铝合金行业现状及发展趋势[J]. 特种铸造及有色合金, 2024, 44(6): 848-852.
SONG C M, HOU D F, WANG J, et al.Current Situation and Development Trend of Die Casting Aluminum Alloy Industry[J]. Special Casting & Nonferrous Alloys, 2024, 44(6): 848-852.
[4] 刘波, 唐永鑫, 伍毅, 等. 一体压铸铝合金车身结构件的轻量化设计研究[J]. 汽车工程, 2024, 46(12): 2154-2163.
LIU B, TANG Y X, WU Y, et al.Study on Lightweight Design of Integrated Mega-Casting Aluminum Alloy Vehicle Body Components[J]. Automotive Engineering, 2024, 46(12): 2154-2163.
[5] 吴萍辉, 王洋, 杨涛, 等. ZL101A铸造铝合金焊接工艺研究[J]. 焊接, 2013(10): 58-61.
WU P H, WANG Y, YANG T, et al.Welding Process of ZL101A Cast Aluminum Alloy[J]. Welding & Joining, 2013(10): 58-61.
[6] REISGEN U, SENGER A, OLSCHOK S.Electron Beam Welding in Atmosphere of Aluminum Die Casting Alloys Made of Different Qualities[J]. Welding in the World, 2018, 62(6): 1207-1213.
[7] 乔伟琦. TIG电弧补焊及热处理对ZL114A机匣组织性能影响研究[D]. 哈尔滨: 哈尔滨工业大学, 2022: 11-13.
QIAO W Q.Study on the Influence of TIG Arc Repair Welding and Heat Treatment on the Microstructure and Properties of ZL114A Casing[D]. Harbin: Harbin Institute of Technology, 2022: 11-13.
[8] 付振东. 6082/C611异种铝合金材料MIG焊接工艺与力学性能研究[D]. 淮南: 安徽理工大学, 2024: 27-30.
FU Z D.Study on MIG Welding Technology and Mechanical Properties of 6082/C611 Dissimilar Aluminum Alloy Materials[D]. Huainan: Anhui University of Science & Technology, 2024: 27-30.
[9] 刘美娜, 高博. 电动汽车用铸铝搅拌摩擦焊研究[J]. 汽车制造业, 2021(S1): 40-41.
LIU M N, GAO B.Study on Friction Stir Welding of Cast Aluminum for Electric Vehicles[J]. Automobil Industrie, 2021(S1): 40-41.
[10] 郑凛, 张铭洋, 熊凌达, 等. SiC_p/Al复合材料焊接综述[J]. 精密成形工程, 2024, 16(3): 32-43.
ZHENG L, ZHANG M Y, XIONG L D, et al.Overview of Welding of SiC_p/Al Composites[J]. Journal of Netshape Forming Engineering, 2024, 16(3): 32-43.
[11] LI L F, JIANG H T, ZHANG R J, et al.Mechanical Properties and Failure Behavior of Flow-Drilling Screw-Bonding Joining of Dissimilar Aluminum Alloys under Dynamic Tensile and Fatigue Loading[J]. Engineering Failure Analysis, 2022, 139: 106479.
[12] 轩庆庆, 龙伟民, 张青科, 等. 稀土对Al-Si-Zn-Cu钎料工艺性能的影响[J]. 焊接, 2017(2): 31-36.
XUAN Q Q, LONG W M, ZHANG Q K, et al.Effect of Rare Earth Elements on Brazing Process Performance of Al-Si-Zn-Cu Filler Metal[J]. Welding & Joining, 2017 (2): 31-36.
[13] 李学朝. 铝合金材料组织与金相图谱[M]. 北京: 冶金工业出版社, 2010: 243-244.
LI X C.Microstructure and Metallographic Map of Aluminum Alloy Materials[M]. Beijing: Metallurgical Industry Press, 2010: 243-244.
[14] 张贵峰, 郭洋, 张林杰, 等. Zn-Al-Li系和Zn-Al系钎料对SiC_p/ZL101铝基复合材料的润湿性[J]. 中国有色金属学报, 2012, 22(6): 1674-1679.
ZHANG G F, GUO Y, ZHANG L J, et al.Wettability of Zn-Al-Li和Zn-Al System Brazes on Aluminum Matrix Composite of SiC_p/ZL101[J]. The Chinese Journal of Nonferrous Metals, 2012, 22(6): 1674-1679.
[15] YE Z, HUANG J H, YANG H, et al.Effect of Si Addition on Corrosion Behaviors of Cu/Al Dissimilar Joint Brazed with Novel Zn-Al-xSi Filler Metals[J]. Journal of Materials Research and Technology, 2019, 8(6): 5171-5179.
[16] 董博文, 董显, 鲍丽, 等. 铜-铝异种金属钎焊材料的研究现状[J]. 焊接, 2019(5): 7-12.
DONG B W, DONG X, BAO L, et al.Research Status of Brazing and Soldering Materials for Cu-Al Dissimilar Metals[J]. Welding & Joining, 2019(5): 7-12.
[17] 陈晨, 张亮, 王曦, 等. Zn-Al系钎焊材料的研究进展[J]. 材料导报, 2023, 37(22): 142-154.
CHEN C, ZHANG L, WANG X, et al.Research Progress of Zn-Al Brazing Materials[J]. Materials Reports, 2023, 37(22): 142-154.
[18] 张满. Al、Ag对Zn-Al钎料性能的影响及相关机理研究[D]. 南京: 南京航空航天大学, 2012: 5-9.
ZHANG M.Effect of Al and Ag on Properties of Zn-Al Solder and Study on Related Mechanism[D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 2012: 5-9.
[19] LONG W M, LI S N, DU D, et al.Morphological Evolution and Development Trend of Brazing Materials[J]. Rare Metal Materials and Engineering, 2019, 48(12): 3781-3790.
[20] LONG W M, ZHAO Y, ZHONG S J, et al.Research Progress on Intermetallic Compounds in Copper-Aluminum Brazed Joints[J]. Rare Metal Materials and Engineering, 2021, 50(1): 7-13.
[21] 薛弘宇, 龙伟民, 纠永涛, 等. AlSiNi钎料感应钎焊铝/钢接头的组织和力学性能[J]. 焊接学报, 2020, 41(3): 45-49.
XUE H Y, LONG W M, JIU Y T, et al.Microstructure and Mechanical Properties of Aluminum/AlSiNi/Steel Joint by Induction Brazing[J]. Transactions of the China Welding Institution, 2020, 41(3): 45-49.
[22] 张启运, 庄鸿寿. 钎焊手册[M]. 北京: 机械工业出版社, 2018.
ZHANG Q Y, ZHUANG H S.Handbook of Brazing and Soldering[M]. Beijing: China Machine Press, 2018.
[23] POLA A, TOCCI M, GOODWIN F E.Review of Microstructures and Properties of Zinc Alloys[J]. Metals, 2020, 10(2): 253.
[24] LIU Z L, LI R Q, JIANG R P, et al.Effects of Al Addition on the Structure and Mechanical Properties of Zn Alloys[J]. Journal of Alloys and Compounds, 2016, 687: 885-892.
[25] HEKIMOĞLU A P, SAVAŞKAN T. Structure and Mechanical Properties of Zn-(5-25) Al Alloys[J]. International Journal of Materials Research, 2014, 105(11): 1084-1089.
[26] 路全彬, 龙伟民, 董显, 等. 高Si多组元铝镁焊料冲击韧性损失研究[J]. 稀有金属, 2017, 41(11): 1237-1242.
LU Q B, LONG W M, DONG X, et al.Impact Toughness Loss of High Silicon Multi-Contents Al-Mg Welding Materials[J]. Chinese Journal of Rare Metals, 2017, 41(11): 1237-1242.
[27] 张育轩, 李欣, 杨建伟, 等. 交变法向载荷作用下2024铝合金的微动疲劳试验研究[J]. 机械强度, 2023, 45(4): 962-969.
ZHANG Y X, LI X, YANG J W, et al.Experimental Study on Fretting Fatigue of 2024 Aluminum Alloy under Alternating Normal Load[J]. Journal of Mechanical Strength, 2023, 45(4): 962-969.
[28] 张军海, 景国玺, 刘烨, 等. 2A70铝合金应变疲劳全寿命预测模型[J]. 机械强度, 2024, 46(3): 736-742.
ZHANG J H, JING G X, LIU Y, et al.Strain Fatigue Life Prediction Model of 2A70 Aluminum Alloy in the Full Life Range[J]. Journal of Mechanical Strength, 2024, 46(3): 736-742.

Funding

Henan Province Science and Technology Research and Development Joint Fund (225200810013); Zhejiang Province “Vanguard Leading Goose+X” Research and Development Project (2024C01086)