扫 描 看 全 文
赵刚，蔡乃星，刘旭升，等.中厚板2219铝合金双轴肩搅拌摩擦焊焊接残余应力及微观组织演变［J］.电焊机，2023，53（3）：111-116.
ZHAO Gang, CAI Naixing, LIU Xusheng, et al.Residual Stress and Microstructure Evolution of Bobbin Tool Friction Stir Welded 2219 Aluminum Alloy Thick Plates[J].Electric Welding Machine, 2023, 53(3): 111-116.
为了研究双轴肩搅拌摩擦焊缝内部焊接残余应力的大小及分布情况，本研究采用短波X射线衍射进行焊接件内部残余应力的无损检测分析；采用光学显微分析、显微硬度和电子背散射衍射（Electron Back-scattering Patterns，EBSD）对焊缝的前进侧和后退侧的母材、热影响区、热机械影响区和焊核区的组织结构演变进行了分析。金相观察结果显示双轴肩搅拌摩擦焊的接头组织在厚度方向上近似于对称分布，呈“腰鼓形”，焊核区与热机影响区的界面为近似双曲线，前进侧热机影响区的分界线更明显。EBSD扫描结果显示热影响区、热机械影响区均存在较强的形变组织；焊核区在剪切变形和焊接循环热的双重影响下发生了动态再结晶，主要为弱取向组织，小角度晶界含量较大。短波X射线衍射结果表明，双轴肩FSW焊接板内部板厚中心层，纵向方向残余应力均大于横向方向；沿着焊缝，拉应力较大区间位于距焊缝起始端150~250 mm的范围内，最大拉应力为244 MPa。
Welding residual stress has a very important influence on the fatigue strength, stress corrosion resistance, dimensional stability and service life of bobbin tool friction stir welds. In order to study the magnitude and distribution of the internal welding residual stress of bobbin tool friction stir welds, the short wave X-ray diffraction was used to conduct the nondestructive testing analysis of the internal residual stress of the weldments; the microstructure evolution of the base metal, heat affected zone, thermo mechanical affected zone and nugget zone at the forward and backward sides of the weld was analyzed by optical microscopy, microhardness and electron back-scattering patterns (EBSD). The metallographic observation results show that the joint structure of double shaft shoulder friction stir welding is approximately symmetrical in the thickness direction, showing a "waist drum" shape. The interface between the nugget zone and the thermo mechanical affected zone is approximately hyperbolic, and the demarcation line of the thermo mechanical affected zone at the forward side is more obvious. EBSD scanning results show that there are strong deformation structures in the heat affected zone and the thermo mechanical affected zone; dynamic recrystallization occurred in the weld nugget zone under the dual influence of shear deformation and welding cycle heat, which is mainly a weakly oriented structure with a large content of small angle grain boundaries. The results of short wave X-ray diffraction show that the longitudinal residual stresses in the central layer of the inner plate thickness of the double shoulder FSW welded plate are greater than those in the transverse direction; along the weld, the section with large tensile stress is 150~250 mm away from the starting end of the weld, and the maximum tensile stress is 244 MPa.
双轴肩搅拌摩擦焊2219铝合金微观组织残余应力
bobbin tool friction stir welding2219 aluminum alloy platesmicrostructureresidual stress
THOMAS W M，NICHOLAS E D，NEEDHAM J C，et al. Friction stir welding： GB 9125978.8［P］. 1991.
ZAPATA J，TORO M， LÓPEZ D. Residual stresses in friction stir dissimilar welding of aluminum alloys［J］. Journal of Materials Processing Technology，2016，229：121-127.
WANG G，ZHAO Y，HAO Y. Friction stir welding of high-strength aerospace aluminum alloy and application in rocket tank manufacturing［J］. Journal of Materials Science and Technology，2018，34（1）： 73-91.
刘观日，吴迪，姚重阳，等. 航天运载器结构先进材料及工艺技术应用与发展展望［J］. 宇航材料工艺， 2021， 51（04）： 1-9.
LIU G R，WU D，YAO Z Y，et al. Application and Development of Advanced Materials and Processing Technology in Aerospace Vehicle Structure［J］. Aerospace Materials & Technology， 2021，51（04）： 1-9.
LIU G，WU D，YAO C， et al. Application and development of advanced materials and processing technology in aerospace vehicle structure［J］. Aerospace Materials & Technology，2021，51（04）： 1-9.
WAN L，HUANG Y，LV Z，et al. Effect of self-support friction stir welding on microstructure and microhardness of 6082-T6 aluminum alloy joint［J］. Materials & Design，2014，55： 197-203.
赵衍华，李延民，郝云飞，等. 2219铝合金双轴肩搅拌摩擦焊接头组织与性能分析［J］. 宇航材料工艺， 2012（06）： 70-75.
ZHAO Y H，LI Y M，HAO Y F，et al. Microstructure and Mechanical Properties of Self-Reacting Friction Stir Welding of 2219 Aluminium Alloy［J］. Aerospace Materials & Technology， 2012（06）： 70-75.
ZHAO Y，LI Y，HAO Y， et al. Microstructure and mechanical properties of self-reacting friction stir welding of 2219 aluminium alloy［J］. Aerospace Materials & Technology，2012（06）： 70-75.
WEN Q，LI W，PATEL V，et al. Investigation on the Effects of Welding Speed on Bobbin Tool Friction Stir Welding of 2219 Aluminum Alloy［J］. Metals and Materials International，2020，26（12）： 1830-1840.
WANG G，ZHAO Y，TANG Y. Research progress of bobbin tool friction stir welding of aluminum alloys： a review［J］. Acta Metallurgica Sinica （English Letters），2020，33（1）： 13-29.
FUSE K，BADHEKA V. Bobbin tool friction stir welding： a review［J］. Science and Technology of Welding and Joining，2019，24（4）： 277-304.
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（02）： 84-88.
HAO Y F，WEI R G，ZHOU Q，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（02）： 84-88.
HAO Y，WEI R，ZHOU Q，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（02）： 84-88.
WITHERS P J. Residual stress and its role in failure［J］. Reports on Progress in Physics，2007，70（12）： 2211-2264.
牛鹏亮，李文亚. 搅拌摩擦焊残余应力研究现状及展望［J］. 精密成形工程，2015（05）： 1-6.
NIU P L，LI W Y. Present Study and Prospect of Friction Stir Welding Residual Stress［J］. Journal of Netshape Forming Engineering，2015（05）： 1-6.
NIU P，LI W. Present study and prospect of friction stir welding residual stress ［J］. Journal of Netshape Forming Engineering，2015（5）：1-6.
WAN Y，JIANG W，SONG M，et al. Distribution and formation mechanism of residual stress in duplex stainless steel weld joint by neutron diffraction and electron backscatter diffraction［J］. Materials and Design， 2019，181： 108086.
SUN T，ROY M J，STRONG D，et al. Weld zone and residual stress development in AA7050 stationary shoulder friction stir T-joint weld［J］. Journal of Materials Processing Technology，2019，263： 256-265.
SUN T，TREMSIN A S，ROY M J，et al. Investigation of residual stress distribution and texture evolution in AA7050 stationary shoulder friction stir welded joints［J］. Materials Science and Engineering A，2018，712： 531-538.
HUTCHINGS M T，WITHERS P J，HOLDEN T M，et al. Introduction to the characterization of residual stress by neutron diffraction［M］. CRC Press，2005.
KALEMBA I，MUSZKA K，WRÓBEL M， et al. EBSD analysis of friction stir welded 7136-T76 aluminum alloy［J］. Solid State Phenomena，2013，203： 258-261.
DELIJAICOV S，RODRIGUES M，FARIAS A，et al. Microhardness and residual stress of dissimilar and thick aluminum plates AA7181-T7651 and AA7475-T7351 using bobbin， top， bottom，and double-sided FSW methods［J］. The International Journal of Advanced Manufacturing Technology，2020，108（1-2）： 277-287.
FONDA R W，KNIPLING K E，ROWENHORST D J. EBSD analysis of friction stir weld textures［J］. JOM， 2014，66（1）： 149-155.
DEPLUS K，SIMAR A，Van HAVER W，et al. Residual stresses in aluminium alloy friction stir welds［J］. The International Journal of Advanced Manufacturing Technology，2011，56（5-8）： 493-504.
编辑部网址：http：//www.71dhj.comhttp://www.71dhj.com
相关作者
相关机构
公网安备11010802024621