Pulse TIG Welding of Two Al-Mg-Si Alloys
Source abstract
Abstract
This article reports the influence of pulse tungsten inert gas (TIG) welding parameters on the microstructure, hardness and tensile strength of weld joints of two Al-(0.5-0.8%)Si-(0.5-0.6%)Mg alloy (T4) produced by using three pulse frequencies (25, 33, and 50 Hz) and two duty cycles (40 and 50%). It has been observed that the mechanical properties (hardness and tensile strength) are sensitive to microstructure of weld metal, which is appreciably affected by the pulse parameters. Low frequency produced higher strength and hardness than high pulse frequency under identical welding conditions. Weld metal and HAZ were found stronger than the base metal. SEM study showed that the fracture of weldment was mostly brittle type.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Welding Techniques Analysis · Welding Techniques and Residual Stresses · Surface Treatment and Residual Stress
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (9)
Show source-provided references
1. Y. Birol, Improvement in Bake Hardening Response of a Twin-roll Cast Al-Mg-Si Sheet, International Conference on “Aluminum 2004”, Subodh K. Das, Ed., The Minerals, Metals & Materials Society, TMS, 2004
2. Y.L. Liu, S.B. Kang, The solidification process of Al-Mg-Si alloys. Journal of materials science 32, 1443–1447, (1997)10.1023/A:1018545732009 ↗
3. R. Manti, D.K. Dwivedi, Microstructure of Al-Mg-Si weld joints produced by pulse TIG welding, Materials and Manufacturing Processes, 22, 57–61, (2007)10.1080/10426910601015923 ↗
4. R. Manti, D.K. Dwivedi, and A. Agarwal, Microstructure and Hardness of Al-Mg-Si Weldments Produced by Pulse GTA Welding, Int. J. Adv. Manuf. Technol. (in press)
5. P.C. Gupta, P.K. Ghosh, M. Breazu, and R. Kumar, Studies on the Effects of Welding Parameters on the Mechanical Properties of Pulsed Arc Welding Al-Zn-Mg Alloy, R&D Project Report. MIED, University of Roorkee, 1989, p 208–224
6. D.K. Singh, L. Issler, P.K. Ghosh, M. Breazu, Mechanical Properties of TIG Welded Al-Zn-Mg Alloy. Indian welding journal, 24, 36–45, (1991)10.22486/iwj.v24i4.148350 ↗
7. Welding Handbook, “Fundamentals of Welding”, 7th Ed., Vol 1. American Welding Society, Miami, 1976, p 9–11
8. S. Kou, Welding Metallurgy, Willey Inter-Science, Canada, 187–194, (2003)
9. Q.G. Wang, C.H. Caceres, The fracture mode in Al-Mg-Si casting alloys. Materials Science and Engineering A, 241, 72–82 (1998)10.1016/S0921-5093(97)00476-0 ↗