Study on microstructure and mechanical properties of Al–Mg–Mn–Er alloy joints welded by TIG and laser beam
作者： Dongxia Yang , Xiaoyan Li , Dingyong He , Hui Huang , Liang Zhang
DOI: 10.1016/J.MATDES.2012.03.041
关键词: Ultimate tensile strength 、 Gas tungsten arc welding 、 Microstructure 、 Alloy 、 Welding 、 Equiaxed crystals 、 Tungsten 、 Metallurgy 、 Laser beam welding 、 Materials science
摘要: Al-4.7Mg-0.7Mn-0.3Er alloy plates were welded by laser beam welding (LBW) and tungsten inert gas (TIG). Mechanical properties microstructures of both joints analyzed. The results showed that the tensile strength LBW joint was 315 MPa, which approximately 10% higher than TIG joint. This attributed to fine grains, dispersed primary Al3Er phase low Mg evaporation in weld. Equiaxed grains with average size 30 μm obtained fusion zone, much smaller 90 zone joint, due heat input during process. Moreover, finer particles uniformly distributed joints, resulted a substantial increase nucleation rate welds. In addition, it also found concentrations zones, lower base one tested EPMA. burning loss rates 36% 22%, respectively.
elsevier.com
sci-hub.se 参考文章(28)
E. Zschech, G. Neye, L.A. Guitterez, Microstructure, hardness profile and tensile strength in welds of AA6013 T6 extrusions Welding Journal. ,vol. 75, ,(1996)
T. Debroy, H. Zhao, M. Pastor, R. P. Martukanitz, Porosity, underfill and magnesium loss during continuous wave Nd:YAG laser welding of thin plates of aluminum alloys 5182 and 5754 Welding Journal. ,vol. 78, ,(1999)
S Lee, A Utsunomiya, H Akamatsu, K Neishi, M Furukawa, Z Horita, T.G Langdon, Influence of scandium and zirconium on grain stability and superplastic ductilities in ultrafine-grained Al-Mg alloys Acta Materialia. ,vol. 50, pp. 553- 564 ,(2002) , 10.1016/S1359-6454(01)00368-8
Vladivoj Ocenasek, Margarita Slamova, Resistance to recrystallization due to Sc and Zr addition to Al–Mg alloys Materials Characterization. ,vol. 47, pp. 157- 162 ,(2001) , 10.1016/S1044-5803(01)00165-6
Song Bai, Zhiyi Liu, Yuntao Li, Yanhui Hou, Xu Chen, Microstructures and fatigue fracture behavior of an Al–Cu–Mg–Ag alloy with addition of rare earth Er Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 527, pp. 1806- 1814 ,(2010) , 10.1016/J.MSEA.2009.11.011
A. K. Lakshminarayanan, V. Balasubramanian, K. Elangovan, Effect of welding processes on tensile properties of AA6061 aluminium alloy joints The International Journal of Advanced Manufacturing Technology. ,vol. 40, pp. 286- 296 ,(2009) , 10.1007/S00170-007-1325-0
J. M. Sánchez-Amaya, T. Delgado, J. J. De Damborenea, V. Lopez, F. J. Botana, Laser welding of AA 5083 samples by high power diode laser Science and Technology of Welding and Joining. ,vol. 14, pp. 78- 86 ,(2009) , 10.1179/136217108X347629
S.P. Wen, Z.B. Xing, H. Huang, B.L. Li, W. Wang, Z.R. Nie, The effect of erbium on the microstructure and mechanical properties of Al–Mg–Mn–Zr alloy Materials Science and Engineering: A. ,vol. 516, pp. 42- 49 ,(2009) , 10.1016/J.MSEA.2009.02.045
Liu Liming, Wang Jifeng, Song Gang, Hybrid laser–TIG welding, laser beam welding and gas tungsten arc welding of AZ31B magnesium alloy Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 381, pp. 129- 133 ,(2004) , 10.1016/J.MSEA.2004.04.044
M Katoh, Factors affecting mechanical properties of laser welded aluminium alloys Welding International. ,vol. 10, pp. 771- 777 ,(1996) , 10.1080/09507119609549088