动车组连接板搅拌摩擦焊及熔化焊接头性能研究
Research on the Performance of Friction Stir Welding and Fusion Welding Joint of High-speed Rail Connection Plate
- 2022年52卷第10期 页码:62-71
收稿:2022-09-26,
纸质出版:2022-10-20
DOI: 10.7512/j.issn.1001-2303.2022.10.10
移动端阅览

浏览全部资源
扫码关注微信
收稿:2022-09-26,
纸质出版:2022-10-20
移动端阅览
对分别采用搅拌摩擦焊和熔化焊的连接板焊接接头的金相、拉伸、弯曲、硬度及疲劳性能等方面进行对比研究。两种焊接方式金相均合格;采用搅拌摩擦焊的连接板接头抗拉强度为275.67 MPa,比熔化焊(263.8 MPa)高约4.5%;搅拌摩擦焊接头弯曲性能侧弯180°均合格,熔化焊接头侧弯试件在110°左右时由于存在气孔导致裂纹出现;搅拌摩擦焊接头的硬度分布近似W形,中心层焊核区显微硬度值约为79~104 HV,在-18~-6 mm和6~18 mm范围内出现软化现象,最低硬度为69 HV,熔化焊接头的中心层焊缝区显微硬度值约为92~97 HV,在3~9 mm范围内出现软化现象,最低硬度为71 HV;搅拌摩擦焊接头中值疲劳极限为137 MPa,比熔化焊(117 MPa)高约17%。
The metallographic
tensile
bending
hardness and fatigue properties of the high-speed rail connection plate welded joint of friction stir welding and fusion welding were compared and studied.The results show that both welding methods are qualified in metallography;The tensile strength of the joint of friction stir welding is 275.67 MPa and is about 4.5% higher than that of fusion welding
which is 263.8MPa; The bending property of friction stir welding joint is all qualified at 180°
and the crack occurs in the specimen of fusion welding head bending at about 110° due to the existence of pores;The hardness distribution of friction stir welding joint is similar to W shape
the microhardness value of the nugget zone of the central layer is about 79~104 HV
and the softening phenomenon occurs at -18~-6 mm and 6~18 mm
and the lowest hardness is 69 HV;The microhardness value of the weld zone on the central layer of the fusion welding joint is about 92~97 HV
the softening phenomenon occurs at about 3~9 mm
and the lowest hardness is 71 HV;The median fatigue limit of friction stir welding joint is 137 MPa and is about 17% higher than that of fusion welding
which is 117 MPa.
侯振国 , 钮旭晶 , 李充 , 等 . 搅拌摩擦焊技术在高速列车制造中的应用 [J]. 电焊机 , 2018 , 48 ( 3 ): 32 - 36 .
Hou Z G , Niu X J , Li C , et al . Application of friction stir welding technology for the high-speed train manufacturing [J]. Electric Welding Machine , 2018 , 48 ( 3 ): 32 - 36 .
方宇欣 , 许鸿吉 , 金鹏 . 6082-T6厚板铝合金FSW焊接接头组织与力学性能研究 [J]. 焊接技术 , 2019 , 48 ( 12 ): 23 - 25 .
Fan Y X , Xu H J , Jin P . Study on Microstructure and Mechanical Properties of FSW Welded Joint of 6082-T6 Thick Plate Aluminum Alloy [J]. Welding Technology , 2019 , 48 ( 12 ): 23 - 25 .
P . M.G.P. Moreiraet al. Fatigue behavior of FSW and MIG weldments for two aluminum alloys [J]. Theoretical and Applied Fracture Mechanies , 2007 ,( 48 ): 169 - 177 .
庹文海 , 杨尚磊 , 杨文涛 . 轨道交通用6082-T6铝合金MIG焊接接头组织与疲劳性能 [J]. 材料导报 , 2015 , 20 : 105 - 109 .
Tuo W H , Yang S L , Yang W T . Microstructure and Fatigue Performance of MIG Welded Joint of 6082-T6 Aluminum Alloy Used for Rail Transportation [J]. Materials Review , 2015 , 20 : 105 - 109 .
秦丰 , 周军 , 侯振国 . 6082铝合金双面搅拌摩擦焊接头组织与性能 [J]. 焊接学报 , 2021 ( 02 ): 75 - 80 .
Qin F , Zhou J , Hou Z G . Research on microstructure and properties of double-sided friction stir welding joint of 6082 aluminum alloy [J]. Transactions of The China Welding Institution , 2021 ( 02 ): 75 - 80 .
钮旭晶 , 侯振国 , 鲁二敬 . 轨道车辆用6082铝合金搅拌摩擦焊焊接接头性能研究 [J]. 金属加工(冷加工) , 2016 ( S1 ): 842 - 844 .
Niu X J , Hou Z G , Lu E J . Study on properties of friction stir welding joint of 6082 aluminum alloy for railway vehicles [J]. MW Metal Cutting , 2016 ( S1 ): 842 - 844 .
张航 , 宫文彪 , 赵立哲 . 6082-T6铝合金搅拌摩擦焊“S”线的形成及其对接头组织性能的影响 [J]. 热加工工艺 , 2020 , 23 : 23 - 26 .
Zhang H , Gong W B , Zhao L Z . Formation of "S" Line and Its Influences on Microstructure and Properties of Friction Stir Welded 6082-T6 Aluminum Alloy [J]. Hot Working Technology , 2020 , 23 : 23 - 26 .
靳佳霖 , 徐国富 , 李耀 . 焊丝成分对6082-T6铝合金焊接接头组织和性能的影响 [J]. 中国有色金属学报 , 2020 ( 01 ): 1 - 8 .
Jin J L , Xu G F , Li Y . Effect of welding wire composition on microstructure and properties of 6082-T6 aluminum alloy welded joints [J]. The Chinese Journal of Nonferrous Metals , 2020 ( 01 ): 1 - 8 .
邓舒浩 , 邓运来 , 张臻 . 焊接工艺对6082-T6铝合金FSW接头微观组织与力学性能的影响 [J]. 中南大学学报:自然科学版 , 2018 ( 10 ): 2413 - 2422 .
Deng S H , Deng Y L , Zhang Z . Effect of welding parameters on microstructure and mechanical properties of 6082-T6 aluminum alloy FSW joint [J]. Journal of Central South University:Science and Technology , 2018 ( 10 ): 2413 - 2422 .
王希靖 , 魏学玲 , 张亮亮 . 6082-T6铝合金搅拌摩擦焊组织演变与力学性能 [J]. 焊接学报 , 2018 ( 03 ): 1 - 5 .
Wang X J , Wei X L , Zhang L L . Microstructural evolution and mechanical properties of friction stir welded 6082-T6 aluminum alloy [J]. Transactions of the China Welding Institution , 2018 ( 03 ): 1 - 5 .
相关作者
相关机构
公网安备11010802024621