含Sc高强铝合金薄板TIG焊与FSW接头组织与性能对比研究

doi:10.3901/JME.2020.06.221

机械工程学报 ›› 2020, Vol. 56 ›› Issue (6): 221-228.doi: 10.3901/JME.2020.06.221

• 搅拌摩擦焊接 • 上一篇

扫码分享

含Sc高强铝合金薄板TIG焊与FSW接头组织与性能对比研究

杨超¹, 王英君², 徐艳利³, 蔡静¹, 于宝海¹, 倪丁瑞¹

1. 中国科学院金属研究所沈阳 110016;
2. 东北轻合金有限责任公司哈尔滨 150060;
3. 北京航天新风机械设备有限责任公司北京 100854

收稿日期:2019-10-28 修回日期:2020-02-18 出版日期:2020-03-20 发布日期:2020-05-12
作者简介:杨超,男,1987年出生,博士研究生。主要研究方向为铝合金的搅拌摩擦焊接。E-mail:cyang16b@imr.ac.cn;
倪丁瑞(通信作者),男,1976年出生,博士,研究员。主要研究方向为轻合金及其复合材料的制备与焊接。E-mail:drni@imr.ac.cn
基金资助:
NSFC-钢铁联合基金资助项目（U1760201）。

Microstructure and Mechanical Properties of TIG and Friction Stir Welded Joints of Sc-contained High Strength Aluminum Alloy Sheet

YANG Chao¹, WANG Yingjun², XU Yanli³, CAI Jing¹, YU Baohai¹, NI Dingrui¹

1. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016;
2. Northeast Light Alloy Co., Ltd., Harbin 150060;
3. Aerospace Science and Industry Group Co., Ltd., Beijing 100854

Received:2019-10-28 Revised:2020-02-18 Online:2020-03-20 Published:2020-05-12

摘要/Abstract

摘要： 分别对3 mm厚的Al-Zn-Mg-Cu-Sc高强铝合金薄板进行钨极惰性气体保护（Tungsten inert gas，TIG）焊与搅拌摩擦焊接（Friction stir welding，FSW），对比分析了两种焊接工艺下接头的微观组织与力学性能。结果表明：两种工艺都能获得无缺陷的接头。TIG焊核区晶粒粗大；硬度分布呈“M”形，中心值降至125 HV，最低值出现在热影响区（Heat-affected zone，HAZ）（约110 HV）；拉伸时样品断在HAZ，接头强度约为417 MPa，为母材的71%。FSW焊核区为等轴细晶；硬度分布呈典型“W”型，最低值亦出现在HAZ （约115 HV），且随焊速的提高而提高；在400～1 200 r/min下均有可能获得高强度接头，其中转速1 200 r/min、焊速200 mm/min下接头强度最高（458 MPa），为母材的79%，拉伸样品断在HAZ。当焊速过快时，由于合金变形能力差，焊核区易出现缺陷，导致拉伸时接头过早断裂于焊核区中心。

关键词: 高强铝合金, TIG焊, 搅拌摩擦焊, 微观组织, 力学性能

Abstract: 3 mm thick Al-Zn-Mg-Cu-Sc alloy plates were subjected to tungsten inert gas welding (TIG) and friction stir welding (FSW), respectively. The microstructure and mechanical properties of the TIG and FSW joints were investigated. The results showed that defect-free joints of both TIG and FSW were acquired. For the TIG joint, the nugget zone (NZ) was characterized with coarsened grains, the hardness distribution exhibited “M” shape with low hardness value in the center (～125 HV), and the lowest hardness zone (LHZ, ～110 HV) located in the heat affected zone (HAZ); the ultimate tensile strength (UTS) of 417 MPa was obtained, ～71% of the BM. For the FSW joints, the NZs were characterized with exquiaxed fine grains, and the grain sizes decreased with increasing the welding speed; the hardness distribution presented “W” shape with the LHZ located in the HAZ (～115 HV). FSW joints with high strength could be obtained under the rotation rates of 400-1 200 r/min, and the highest UTS of 458 MPa was achieved under the rotation rate of 1 200 r/min and welding speed of 200 mm/min, ～79% of the BM. When the welding speed was too fast, defects were likely to appear in the NZs due to the poor deformation ability of the alloy, resulting in the premature failure of tensile samples in the center of the NZs.

Key words: high strength aluminum alloy, TIG welding, friction stir welding, microstructure, mechanical properties

中图分类号:

TG456

杨超, 王英君, 徐艳利, 蔡静, 于宝海, 倪丁瑞. 含Sc高强铝合金薄板TIG焊与FSW接头组织与性能对比研究[J]. 机械工程学报, 2020, 56(6): 221-228.

YANG Chao, WANG Yingjun, XU Yanli, CAI Jing, YU Baohai, NI Dingrui. Microstructure and Mechanical Properties of TIG and Friction Stir Welded Joints of Sc-contained High Strength Aluminum Alloy Sheet[J]. Journal of Mechanical Engineering, 2020, 56(6): 221-228.

参考文献

[1] 蹇海根,姜锋,徐忠艳,等.航空用高强韧Al-Zn-Mg-Cu系铝合金的研究进展[J].热加工工艺,2006,35(12):66-71. JIAN Haigen,JIANG Feng,XU Zhongyan,et al. Study progress of high strength and tenacity Al-Zn-Mg-Cu aluminum alloy for aviation[J]. Hot Working Technology,2006,35(12):66-71.
[2] 刘晓涛,崔建忠. Al-Zn-Mg-Cu系超高强铝合金的研究进展[J].材料导报,2005,19(3):47-50. LIU Xiaotao,CUI Jianzhong. Progress in research on ultra-high strength Al-Zn-Mg-Cu alloy[J]. Materials Review,2005,19(3):47-50.
[3] 商海东,周小军,王飞,等.喷射成型7055铝合金锻件的高温力学性能[J].粉末冶金材料科学与工程,2017,22(5):1673-0224. SHANG Haidong,ZHOU Xiaojun,WANG Fei,et al. Mechanical properties at high temperature of spray-forming 7055 aluminum alloy forgings[J]. Materials Science and Engineering of Powder Metallurgy,2017,22(5):636-642.
[4] 周民,甘培原,邓鸿华,等.含钪微合金化铝合金研究现状及发展趋势[J].中国材料进展,2018,37(2):154-160. ZHOU Min,GAN Peiyuan,DENG Honghua,et al. Research status and prospect of Sc microalloying aluminum alloys[J]. Materials China,2018,37(02):154-160.
[5] 陈琴,潘清林,王迎,等.微量Sc和Zr对Al-Mg-Mn合金组织与力学性能的影响[J].中国有色金属学报,2012,22(6):1555-1563. CHEN Qin,PAN Qinglin,WANG Ying,et al. Effects of minor scandium and zirconium on microstructure and mech-anical properties of Al-Mg-Mn alloys[J]. The Chinese Journal of Nonferrous Metals,2012,22(6):1555-1563.
[6] 张思平.含Sc铝合金的应用研究新进展与前景展望[J].铝加工,2019,247(02):4-9. ZHANG Siping. Research development and prospect for application of Sc-containing aluminum alloy[J]. Aluminium Fabrication,2019,247(2):4-9.
[7] 徐雪芳,王春华.钪含量对7050铝合金组织与力学性能的影响[J].金属热处理,2018,43(9):6-9. XU Xuefang,WANG Chunhua. Effect of Sc content on microstructure and mechanical properties of 7050 aluminum alloy[J]. Heat Treatment of Metals,2018,43(9):6-9.
[8] 陈勇,张军,滕广标,等. Sc和Zr对7055合金铸态及热处理态组织和性能的影响[J].特种铸造及有色合金,2018,38(7):1130-1133. CHEN Yong,ZHANG Jun,TENG Guangbiao,et al. Effects of Sc and Zr on microstructure and properties of as-cast and heat-treated state 7055Al alloy[J]. Special Casting & Nonferrous Alloys,2018,38(7):1130-1133.
[9] 宋友宝,李龙,吕金明,等. 7xxx系铝合金焊接研究现状与展望[J].中国有色金属学报,2018,28(3):492-501. SONG Youbao,LI Long,LÜ Jinming,et al. The status and perspective of the wlding of 7xxx series aluminum alloy[J]. The Chinese Journal of Nonferrous Metals,2018,28(3):492-501.
[10] MISHRA R S,MA Z Y. Friction stir welding and processing[J]. Materials Science and Engineering:R,2005:1-78.
[11] PADHY G K,WU C S,GAO S. Friction stir based welding and processing technologies processes,para-meters,microstructures and applications:A review[J]. Journal of Materials Science and Technology,2018,34:1-38.
[12] 杨超,王继杰,韩培培,等.包铝层对7B04-O铝合金薄板搅拌摩擦搭接性能影响[J].机械工程学报,2015,51(22):54-59. YANG Chao,WANG Jijie,HAN Peipei,et al. Effect of Al clad layer on friction stir lap welded 7B04 Al-O sheet[J]. Journal of Mechanical Engineering,2015,51(22):54-59.
[13] 韩培培,杨超,王继杰,等.固溶处理对7B04-O铝合金搅拌摩擦焊接接头微观组织与力学性能的影响[J].机械工程学报,2015,51(22):35-41. HAN Peipei,YANG Chao,WANG Jijie,et al. Effects of solution heat treatment on friction stir welding joints of 7B04-O aluminum alloy[J]. Journal of Mechanical Engineering,2015,51(22):35-41.
[14] ZHANG D K,ZHAO Y,DONG M Y,et al. Effects of weld penetration on tensile properties of 2219 aluminum alloy TIG-welded joints[J]. Transactions of Nonferrous Metals Society of China,2019,29(6):1161-1168.
[15] ALIAKBARI S,KETABCHI M,MIRSALEHI E. Effect of through-thickness friction stir processing parameters on weld repair and modification of fusion-welded AA6061 aluminum alloy[J]. Journal of Materials Engineering and Performance,2019,28(5):2688-2696.
[16] TODA H,OOGO H,HORIKAWA K,et al. The true origin of ductile fracture in aluminum alloys[J]. Metallur-gical and Materials Transactions A,2014,45(2):765-776.
[17] YANG C,NI D R,XUE P,et al. A comparative research on bobbin tool and conventional friction stir welding of Al-Mg-Si alloy plates[J]. Materials Characterization,2018,145:20-28.
[18] LIU F C,MA Z Y. Influence of tool dimension and welding parameters on microstructure and mechanical properties of friction-stir-welded 6061-T651 aluminum alloy[J]. Metallurgical and Materials Transactions A,2008,39:2378-2388.
[19] YANG C,WANG J J,MA Z Y,et al. Friction stir welding and low-temperature superplasticity of 7B04 Al sheet[J]. Acta Metall. Sin.(Engl. Lett.),2015,51:1449-1456.
[20] FENG A H,CHEN D L,MA Z Y,et al. Microstructure and strain hardening of a friction stir welded high-strength Al-Zn-Mg alloy[J]. Acta Metall. Sin.(Engl. Lett.),2014,27:723-729.
[21] ZENG X H,XUE P,WANG D,et al. Material flow and void defect formation in friction stir welding of aluminium alloys[J]. Science and Technology of Welding and Joining,2018,23:677-686.
[22] TAO Y,ZHANG Z,NI D R,et al. Influence of welding parameter on mechanical properties and fracture behavior of friction stir welded Al-Mg-Sc joints[J]. Materials Science & Engineering A,2014,612:236-245.

含Sc高强铝合金薄板TIG焊与FSW接头组织与性能对比研究

Microstructure and Mechanical Properties of TIG and Friction Stir Welded Joints of Sc-contained High Strength Aluminum Alloy Sheet

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	秦仁耀, 张国栋, 李能, 刘伟, 黄帅, 熊华平. TiAl基合金的增材制造技术研究进展[J]. 机械工程学报, 2021, 57(8): 115-132.
[2]	李欢, 周亢, 曹彪, 张锦洲. 铝合金大功率超声波焊接界面及接头性能研究[J]. 机械工程学报, 2021, 57(6): 87-95.
[3]	翟明, 武传松. 搅拌头/工件界面峰值温度的测量及预测[J]. 机械工程学报, 2021, 57(4): 36-43.
[4]	李伟, 秦羽满, 李艳国, 张明, 杨志南, 张福成, 尤蕾蕾, 龙晓燕. 热处理工艺对纳米贝氏体渗碳轴承钢表层组织和性能的影响[J]. 机械工程学报, 2021, 57(4): 63-72.
[5]	高芮宁, 李祥. 径向梯度多孔支架设计与力学性能分析[J]. 机械工程学报, 2021, 57(3): 220-226.
[6]	朱波, 王文科, 郭洋, 熊建坤, 张建勋. 12Cr/30Cr2Ni4MoV异种转子钢焊接接头微区冲击韧性研究[J]. 机械工程学报, 2021, 57(2): 53-61.
[7]	王堃, 赵锡龙, 郑韶先, 李渊博. U型缺口试件微压剪试验及其有限元模拟[J]. 机械工程学报, 2021, 57(2): 80-86.
[8]	罗天祺, 陈再刚, 蒋建政, 王家鑫, 王开云. 货物非均匀装载对高速货运动车组动力学性能的影响[J]. 机械工程学报, 2021, 57(2): 139-146.
[9]	李飞飞, 宋勇, 刘超, 李博, 张世伟. 板带力学性能预报的集成学习模型及其可靠性评价[J]. 机械工程学报, 2021, 57(2): 239-246.
[10]	杜伯学, 李忠磊, 周硕凡, 范铭升. 聚丙烯高压直流电缆绝缘研究进展与展望^*[J]. 电气工程学报, 2021, 16(2): 2-11.
[11]	杨俊, 杨佳明, 赵新东, 杨旭, 王暄. 混炼工艺对聚丙烯基绝缘材料的力学及电学性能研究^*[J]. 电气工程学报, 2021, 16(2): 33-41.
[12]	许灿, 朱平, 刘钊. 平纹机织碳纤维复合材料多尺度随机力学性能层次敏感性[J]. 机械工程学报, 2021, 57(14): 213-222.
[13]	杨佳, 张勋业, 马广璐, 林盼盼, 徐彦强, 林铁松, 何鹏. SiC_f/SiC复合材料与镍基高温合金钎焊接头的组织及性能[J]. 机械工程学报, 2021, 57(12): 161-168.
[14]	田笑, 张恒, 王恒强, 王兵, 陈飞. 铝合金薄壁异形截面辗扩成形宏微观模拟[J]. 机械工程学报, 2021, 57(12): 179-191.
[15]	李云峰, 石岩. 激光熔覆耐磨耐冲击复合涂层组织与性能研究[J]. 机械工程学报, 2021, 57(12): 237-246.