SiC添加对W/AgCuTi/Cu钎焊接头组织与力学性能的影响

王刚; 丁慕晗; 张俊杰; 张成林; 赵禹

doi:10.12073/j.hjxb.20220615002

SiC添加对W/AgCuTi/Cu钎焊接头组织与力学性能的影响

王刚^1,,
丁慕晗¹,
张俊杰¹,
张成林²,
赵禹^{1, 3, ,}

1.
安徽工程大学, 高性能有色金属材料安徽省重点实验室, 芜湖, 241000
2.
安徽拓宝增材制造科技有限公司, 芜湖, 241200
3.
东睦新材料集团股份有限公司, 宁波, 315000

基金项目: 国家自然科学基金资助项目(52101030, 52171148)；安徽省杰出青年科学基金项目(2008085J23)；安徽工程大学-繁昌区产业协同创新专项基金(2021fccyxtb3)

详细信息

作者简介:
王刚，男，博士，教授，博士研究生导师；主要从事先进材料连接技术方面的科研和教学工作；Email：gangwang@ahpu.edu.cn

通讯作者:
赵禹，男，博士，副教授，硕士研究生导师； Email：zhaoyu0816@126.com

中图分类号: TG 454
计量
- 文章访问数: 281
- HTML全文浏览量: 59
- PDF下载量: 82
出版历程
- 收稿日期: 2022-06-14
- 网络出版日期: 2023-03-30
- 刊出日期: 2023-05-24

Effect of SiC adiition on microstructure and mechanical properties of the W/AgCuTi/Cu brazed joint

1.
Anhui Key Laboratory of High-performance Non-ferrous Metal Materials, Anhui Polytechnic University, Wuhu, 241000, China
2.
Anhui Tuobao Additive Manufacturing Technology Corporation Limited, Wuhu, 241200, China
3.
NBTM New Materials Group Corporation Limited, Ningbo, 315000, China

摘要

摘要: 为研究碳化硅(SiC)添加对缓解钨-铜钎焊接头残余应力的作用效果及机理，采用真空钎焊技术获得不同碳化硅含量(质量分数为0 ~ 20%)的W/SiC-AgCuTi/Cu钎焊接头，分析焊接接头组织演变及剪切性能变化规律. 结果表明，随着SiC含量的增加，钎焊接头剪切强度先提升后降低. 当SiC的质量分数为10%时，钎焊接头的剪切强度达到峰值120 MPa，比未添加SiC的焊接接头强度提升45%左右. 分析认为，少量(质量分数为0 ~ 10%)的SiC硅在W-Cu焊缝组织中较均匀分布，可有效缓解母材热失配带来的焊接残余应力，提升焊接接头强度. 但过量(质量分数为20%)的SiC易在焊缝组织中聚集成大尺寸块体，剪切过程中形成应力集中，不利于焊接接头强度进一步提升.
- 钨-铜 /
- 钎焊 /
- 残余应力 /
- 碳化硅 /
- 接头强度
Abstract: To study the effect and mechanism of SiC addition on relieving residual stress in tungsten-copper brazed joints, several W/SiC-AgCuTi/Cu brazed joints with different SiC contents were obtained using vacuum brazing technology. The microstructure evolution and shearing properties of the joints were analyzed. The results show that the shear strength of the brazed joint initially increases and then decreases with increasing SiC addition. When the addition of SiC increases to 10%, the shear strength of the brazed joint reaches 120 MPa, 45% higher than that of the welded joint without SiC. It was proposed that a small amount of SiC (0 − 10%) can be uniformly distributed in the W-Cu brazed joint, effectively relieving welding residual stress and improving joint strength. However, excess SiC (20%) tends to aggregate into large blocks in the joint, resulting in stress concentration during shearing, which counteracts strengthening of the W-Cu brazed joint.
- tungsten-copper /
- brazing /
- residual stress /
- silicon carbide /
- strength

HTML全文

图 1 不同SiC含量的SiC-AgCuTi复合钎料粉末微观形貌

Figure 1. Images of the SiC-AgCuTi composite filler powders doped with different contents of SiC. (a) AgCuTi + SiC(ω = 5%) ; (b) AgCuTi + SiC(ω = 10%); (c) AgCuTi + SiC(ω = 20%)

下载: 全尺寸图片幻灯片

图 2 钎焊接头剪切强度测试示意图

Figure 2. Schematic diagrams of shear strength testing of brazed joint. (a) cutting for shear specimens; (b) shearing test

下载: 全尺寸图片幻灯片

图 3 掺杂不同SiC含量的W/SiC-AgCuTi/Cu钎焊接头形貌图

Figure 3. SEM images of the W/SiC-AgCuTi/C joints doped with different contents of SiC. (a) AgCuTi + SiC(ω = 0%); (b) AgCuTi + SiC(ω = 5%); (c) AgCuTi + SiC(ω = 10%); (d) AgCuTi + SiC(ω = 20%)

下载: 全尺寸图片幻灯片

图 4 添加质量分数为20%的SiC的W/SiC-AgCuTi/Cu钎焊接头EDS面扫描图像

Figure 4. EDS map scanning images of the W/SiC-AgCuTi/Cu brazed joint doped with 20% SiC. (a) SEM of AgCuTi + SiC(ω = 20%); (b) Si; (c) W; (d) Ag; (e) Cu; (f) Ti

下载: 全尺寸图片幻灯片

图 5 W-Cu钎焊接头有限元模拟分析图

Figure 5. Finite element simulation analysis diagram of the brazed W-Cu joint. (a) assembly diagram； (b) residual stress distribution diagram

下载: 全尺寸图片幻灯片

图 6 掺杂不同 SiC 含量复合钎料钎焊接头剪切强度

Figure 6. Shear strength of brazed joints with composite brazing materials doped with different SiC contents

下载: 全尺寸图片幻灯片

图 7 不同SiC添加量的W/SiC-AgCuTi/Cu钎焊接头剪切断口形貌

Figure 7. Fracture morphologies of the W/SiC-AgCuTi/Cu brazed joints doped with different contents of SiC. (a) AgCuTi + SiC(ω = 0%); (b) AgCuTi + SiC(ω = 5%); (c) AgCuTi + SiC(ω = 10%); (d) AgCuTi + SiC(ω = 20%)

下载: 全尺寸图片幻灯片

表 1 掺杂ω = 20% 的SiC的W/SiC-AgCuTi/Cu钎焊接头断口EDS点分析结果(质量分数，%)

Table 1 Results of EDS point analysis of fractured W/SiC-AgCuTi/Cu brazed joints doped with 20% SiC

位置 Ag Cu Ti Si C W

点 1 4.81 2.17 4.62 40.53 46.66 1.20
点 2 65.51 20.45 1.81 5.10 0.01 7.11
点 3 2.86 76.17 8.15 0.81 0.00 12.01
点 4 6.09 83.51 8.82 1.37 0.21 0.00

下载: 导出CSV

参考文献(15)

[1]	徐宇欣, 邱小明, 阮野, 等. 钨基合金与钢异质材料连接研究进展[J]. 焊接学报, 2021, 42(10): 87 − 96,102. Xu Yuxin, Qiu Xiaoming, Ruan Ye, et al. Advances in the study of tungsten-based alloys for joining with steel heterogeneous materials[J]. Transactions of the China Welding Institution, 2021, 42(10): 87 − 96,102.
[2]	陈远亭, 李先芬, 陈柏炎. 钨的钎焊研究进展[J]. 有色金属材料与工程, 2018, 39(6): 32 − 36. Chen Yuanting, Li Xianfen, Chen Baiyan. Research progress of tungsten brazing[J]. Nonferrous Metal Materials and Engineering, 2018, 39(6): 32 − 36.
[3]	骆瑞雪, 李争显. 不同焊料对Cu/W钎焊接头强度的影响[J]. 热加工工艺, 2009, 38(9): 109 − 111. doi: 10.3969/j.issn.1001-3814.2009.09.035 Luo Ruixue, Li Zhengxian. Effect of different solders on the strength of Cu/W brazed joints[J]. Hot Working Technology, 2009, 38(9): 109 − 111. doi: 10.3969/j.issn.1001-3814.2009.09.035
[4]	邹贵生, 吴爱萍, 高守传, 等. Ag-Cu-Ti活性钎料真空钎焊钨、石墨与铜的研究[J]. 新技术新工艺, 2002(6): 40 − 42. doi: 10.3969/j.issn.1003-5311.2002.06.023 Zou Guisheng, Wu Aiping, Gao Shouchuan et al. Vacuum brazing of tungsten, graphite and copper with Ag-Cu-Ti active brazing material[J]. New Technology New Process, 2002(6): 40 − 42. doi: 10.3969/j.issn.1003-5311.2002.06.023
[5]	蔡颖军, 王刚, 赵禹, 等. AgCu/泡沫Cu/AgCu复合钎料对ZrB₂-SiC/Inconel 600合金钎焊接头组织与性能的影响[J]. 材料工程, 2021, 49(10): 72 − 81. doi: 10.11868/j.issn.1001-4381.2020.000687 Cai Yingjun, Wang Gang, Zhao Yu, et al. Effects of AgCu/foam Cu/AgCu composite brazing materials on the organization and properties of brazed joints of ZrB₂-SiC/Inconel 600 alloy[J]. Materials Engineering, 2021, 49(10): 72 − 81. doi: 10.11868/j.issn.1001-4381.2020.000687
[6]	Wang G, Cai Y, Xu Q, et al. Microstructural and mechanical properties of inconel 600/ZrB₂-SiC joints brazed with AgCu/Cu-foam/AgCu/Ti multi-layered composite filler[J]. Journal of Materials Research and Technology, 2020, 9(3): 3430 − 3437. doi: 10.1016/j.jmrt.2020.01.080
[7]	Wang G, Cai Y, Wang W, et al. AgCuTi/graphene-reinforced Cu foam: A novel filler to braze ZrB₂-SiC ceramic to Inconel 600 alloy[J]. Ceramics International, 2020, 46(1): 531 − 537. doi: 10.1016/j.ceramint.2019.08.293
[8]	Jin L, Lin J, Wang H, et al. Carbon nanotubes-reinforced Ni foam interlayer for brazing SiO₂-BN with Ti6A14V alloy using TiZrNiCu brazing alloy[J]. Ceramics International, 2018, 44(4): 3684 − 3691. doi: 10.1016/j.ceramint.2017.11.136
[9]	Zhang L X, Zhang B, Sun Z, et al. Brazing of ZrB₂–SiC–C and GH99 with AgCuTi/SiC interpenetrating network structural composite as an interlayer[J]. Ceramics International, 2020, 46(8): 10224 − 10232. doi: 10.1016/j.ceramint.2020.01.014
[10]	Zhang L X, Sun Z, Chang Q, et al. Brazing SiO₂f/SiO₂ composite to Invar alloy using a novel TiO₂ particle-modified composite braze filler[J]. Ceramics International, 2019, 45(2): 1698 − 1709. doi: 10.1016/j.ceramint.2018.10.052
[11]	Shang J, Yan J, Li N. Brazing W and Fe-Ni-Co alloy using Ag-28Cu and Ag-27Cu-3.5Ti fillers[J]. Journal of Alloys and Compounds, 2014, 611: 91 − 95. doi: 10.1016/j.jallcom.2014.05.106
[12]	Song Y, Liu D, Song X, et al. In-situ synthesis of TiC nanoparticles during joining of SiC ceramic and GH99 superalloy[J]. Journal of the American Ceramic Society, 2019, 102(11): 6529 − 6541. doi: 10.1111/jace.16541
[13]	Xue H, Ding Z, Guo W, et al. Effect of Mo addition on residual stress and mechanical properties of SiC ceramic/Nb521 alloy joints brazed by using AgCuTi filler[J]. Materials Letters, 2021, 310: 131500.
[14]	Gan Shiming, Liu Huaying, Zhai Zhiping, et al. A review of welding residual stress test methods[J]. China Welding, 2022, 31(2): 45 − 55.
[15]	Song X G, Cao J, Wang Y F, et al. Effect of Si₃N₄-particles addition in Ag–Cu–Ti filler alloy on Si3N4/TiAl brazed joint[J]. Materials Science & Engineering A, 2011, 528(15): 5135 − 5140.