2024铝合金双轴肩搅拌摩擦焊接头热循环及组织特征

doi:10.13229/j.cnki.jdxbgxb.20230054

Abstract

Abstract:

Bobbin tool friction stir welding （BT-FSW） was used to weld 2024 aluminum alloy with thickness of 4 mm， and the effect of thermal cycle temperature on the microstructure and mechanical properties of the joint was analyzed. The results show that the peak temperature on the Retreating Side （RS） is higher than that on the advancing side （AS）， with a temperature difference of about 20 °C. The average grain size in the stir zone （SZ） is 10.1 μm， the average grain size in each region on the RS is larger than that of the AS， and the proportions of small-angle grain boundaries is smaller than that on the AS. The fine S-phase precipitates are formed in the SZ， reduced number and increased size of precipitates in the heat affected zone （HAZ） resulting in the mechanical properties are reduced. The hardness of the joint is distributed in a "W" shape， with the smallest hardness value of approximately 72.3 HV at the junction of the thermal-mechanically affected zone （TMAZ） and the HAZ on the RS.

Key words: metallic materials, 2024 aluminum alloy, bobbin tool friction stir welding, thermal cycle, the microstructure and mechanical properties

CLC Number:

TG453

Jia-cheng FENG,Wen-biao GONG,Chuan JU,Yu-peng LI,Yu-meng SUN,Rui ZHU. Thermal cycle and microstructures characteristic of bobbin tool friction stir welded 2024 aluminum alloy[J].Journal of Jilin University(Engineering and Technology Edition), 2024, 54(11): 3184-3191.

Figures/Tables 8

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References 25

1	虞文军, 陈静. 国产2024铝合金不同连接工艺下组织和性能的研究[J]. 应用激光, 2012, 32(6): 31-34.
	Yu Wen-jun, Chen Jing. Investigation of 2024 Al-alloy welding joint of different welding technology[J]. Applied Laser, 2012, 32(6): 31-34.
2	马小革. AA7050/AA2024异种铝合金搅拌摩擦焊疲劳特性研究[D]. 沈阳: 沈阳航空航天大学航空航天工程学院, 2013.
	Ma Xiao-ge. Research on fatigue properties of friction stir welding AA7050/AA2024 aluminum alloys[D]. Shenyang: School of Aerospace Engineering, Shenyang Aerospace University, 2013.
3	桂兵, 张栋梁. 中厚板2024铝合金MIG焊工艺研究[J]. 焊接技术, 2018, 47(8): 46-48.
	Gui Bing, Zhang Dong-liang. Study on MIG welding process of 2024 aluminum alloy for medium thickness plate[J]. Welding Technology, 2018, 47(8): 46-48.
4	郝云飞, 魏瑞刚, 周庆, 等. 焊接热输入对铝合金双轴肩搅拌摩擦焊缝形貌与接头性能的影响[J]. 焊接学报, 2018, 39(2): 84-88.
	Hao Yun-fei, Wei Rui-gang, Zhou Qing, et al. Effect of heat input on weld morphology and tensile properties of bobbin friction stir welded joints[J]. Transactions of the China Welding Institution, 2018, 39(2): 84-88.
5	张会杰, 王敏, 张骁, 等. 2A14-T6铝合金双轴肩搅拌摩擦焊特征及接头组织性能分析[J]. 焊接学报, 2015, 36(12): 65-68.
	Zhang Hui-jie, Wang Min, Zhang Xiao, et al. Characteristics and joint microstructure-property analysis of bobbin tool friction stir welding of 2A14-T6 aluminum alloy[J]. Transactions of the China Welding Institution, 2015, 36(12): 65-68.
6	Fuse K, Badheka V. Bobbin tool friction stir welding: a review[J]. Science and Technology of Welding & Joining, 2018, 24(4): 277-304.
7	Wang F F, Li W Y, Shen J J, et al. Effect of tool rotational speed on the microstructure and mechanical properties of bobbin tool friction stir welding of Al-Li alloy[J]. Materials & Design, 2015, 86(5): 933-940.
8	Xu W F, Luo Y X, Fu M W. Microstructure evolution in the conventional single side and bobbin tool friction stir welding of thick rolled 7085-T7452 aluminum alloy[J]. Materials Characterization, 2018, 138(4): 48-55.
9	李敬勇, 周小平, 董春林, 等. 6082铝合金双轴肩搅拌摩擦焊试板温度场研究[J]. 航空材料学报, 2013, 33(5): 36-40.
	Li Jing-yong, Zhou Xiao-ping, Dong Chun-lin, et al. Temperature fields in 6082 aluminum alloy samples bobbin-tool friction stir welded[J]. Journal of Aeronautical Materials, 2013, 33(5): 36-40.
10	吉华, 邓运来, 邓建峰, 等. 焊接速度对6005A-T6铝合金双轴肩搅拌摩擦焊接头力学性能的影响[J]. 焊接学报, 2019, 40(5): 24-29.
	Ji Hua, Deng Yun-lai, Deng Jian-feng, et al. Effect of welding speed on mechanical properties of bobbin tool friction stir welded 6005A-T6 aluminum alloy joints[J]. Transactions of the China Welding Institution, 2019, 40(5): 24-29.
11	戴忠晨, 云中煌, 付宁宁, 等. 5 mm厚6005A-T6铝合金双轴肩搅拌摩擦焊接头的组织及性能[J]. 机械工程材料, 2018, 42(2): 69-73.
	Dai Zhong-chen, Yun Zhong-huang, Fu Ning-ning, et al. Microstructure and properties of bobbin tool friction stir welded joint of 5 mm thick 6005A-T6 aluminum alloy[J]. Materials for Mechanical Engineering, 2018, 42(2): 69-73.
12	王春桂, 赵运强, 董春林, 等. 6063-T6铝合金双轴肩搅拌摩擦焊接头组织及力学性能分析[J]. 焊接学报, 2018, 39(10): 108-112.
	Wang Chun-gui, Zhao Yun-qiang, Dong Chun-lin, et al. Analysis on microstructure and mechanical properties of 6063-T6 self-reacting friction stir welding[J]. Transactions of the China Welding Institution, 2018, 39(10): 108-112.
13	Threadgill P L. Friction stir welding-state of the art[R]. Industrial Member Report, 1999.
14	Trueba L, Torres M A, Johannes L B, et al. Process optimization in the self-reacting friction stir welding of aluminum 6061-T6[J]. International Journal of Material Forming, 2017, 11(4): 559-570.
15	钮旭晶, 侯振国, 鲁二敬, 等. 标动铝合金底板双轴肩搅拌摩擦焊的数值仿真[J]. 轨道交通装备与技术, 2019, 2019(6): 26-30.
	Niu Xu-jing, Hou Zhen-guo, Lu Er-jing, et al. Numerical simulation of FSW with double probes for base board of standard EMU[J]. Rail Transportation Equipment and Technology, 2019, 2019(6): 26-30.
16	李于朋, 孙大千, 宫文彪. 6082-T6铝合金薄板双轴肩搅拌摩擦焊温度场[J]. 吉林大学学报: 工学版, 2019, 49(3): 836-841.
	Li Yu-peng, Sun Da-qian, Gong Wen-biao. Temperature fields in bobbin-tool friction stir welding for 6082-T6 aluminum alloy sheet[J]. Journal of Jilin University (Engineering and Technology Edition), 2019, 49(3): 836-841.
17	Fuse K, Badheka V. Hybrid self-reacting friction stir welding of AA6061-T6 aluminium alloy with cooling assisted approach[J]. Metals, 2020, 11(1): 11010016.
18	Ahmed M M Z, Habba M M A, Elsayed M M, et al. Bobbin tool friction stir welding of aluminum thick lap joints: effect of process parameters on temperature distribution and joints' properties[J]. Materials, 2021, 14(16): 14164585.
19	Wang Z, Zhang B, Zhang Z, et al. Enhanced fatigue properties of 2219 Al alloy joints via bobbin tool friction stir welding[J]. Acta Metallurgica Sinica, 2022, 36: 586-596.
20	Zhu R, Gong W B, Cui H. Temperature evolution, microstructure, and properties of friction stir welded ultra-thick 6082 aluminum alloy joints[J]. The International Journal of Advanced Manufacturing Technology, 2020, 108(1/2): 331-343.
21	刘西畅, 李文亚, 高彦军, 等. 铝合金双轴肩搅拌摩擦焊过程材料流动行为[J]. 焊接学报, 2021, 42(3): 48-56.
	Liu Xi-chang, Li Wen-ya, Gao Yan-jun, et al. Material flow behavior during bobbin-tool friction stir welding of aluminum alloy[J]. Transactions of the China Welding Institution, 2021, 42(3): 48-56.
22	Scialpi A, Filippis D, Cavaliere P. Influence of shoulder geometry on microstructure and mechanical properties of friction stir welded 6082 aluminium alloy[J]. Materials & Design, 2007, 28(4): 1124-1129.
23	Lin Y C, Xia Y C, Jiang Y Q, et al. Precipitation hardening of 2024-T3 aluminum alloy during creep aging[J]. Materials Science and Engineering, 2013, 565: 420-429.
24	吕可欣. 2xxx系铝合金主要强化相的微观结构研究[D]. 上海: 上海交通大学材料科学与工程学院, 2019.
	Ke-xin Lyu. Study on microstructure of main strengthening phases of 2xxx aluminum alloy[D]. Shanghai: School of Materials Science and Engineering, Shanghai Jiao Tong University, 2019.
25	Fu R D, Zhang J F, Li Y J, et al. Effect of welding heat input and post-welding natural aging on hardness of stir zone for friction stir-welded 2024-T3 aluminum alloy thin-sheet[J]. Materials Science and Engineering, 2013, 559: 319-324.

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Thermal cycle and microstructures characteristic of bobbin tool friction stir welded 2024 aluminum alloy

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