Mechanical Properties and Microstructure of LR Grade a Thick Plate Welded by Double Side Gas Metal Arc Welding

Abstract:

Mechanical and microstructure of double side weld with various angle groove was studied in this research. LR Gr A steel plates (12 mm thickness) were welded using GMAW with corresponding 180 A, 23 V, and 20 l/min respectively with current, voltage, and gas flow. Shielding gas and filler metals used are argon and ER 70S-6. The angle groove that used were 20⁰, 40⁰ and 60⁰. The measured of mechanical properties with regard to hardness, toughness and strength using, Vickers hardness test, Charpy impact test and tensile test respectively The microstructure examined with optical microscope. The results show that the highest hardness values found in welds with groove angle 40ͦ. The transition temperatures of weld metals are at temperatures between -20°C to 0°C. Weld metals with all variations of the groove angle has a value of less than 0.1 mmpy. Microstructure of base metals and HAZ were ferrite and pearlite. While the microstructure of weld metals are accicular ferrite, grain boundary ferrite and Widmanstatten ferrite.

• Periodical: Applied Mechanics and Materials (Volume 851)
• Pages: 168-172
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.851.168
• Online since: August 2016
• Authors: Yustiasih Purwaningrum*, Triyono Triyono, Tegar Rileh Argihono, Ryan Sutrisno
• Keywords: Angle Groove, Double Side Welding, GMAW, Microstructure

References

[1] A. K. Bhaduri, S. K. Albert, S. K. Ray and Rodriguez, Recent Trends in Repair and Refubishingof SteamTurbine Component, Sahdhana, (3&4) (2003) 395-408.

[2] Y. M. Zhang, S. B. Zhang, Double sided arc welding increases weld joint penetration, Welding J. 77(6) (1998) 57-61.

[3] D. K. Miller, Use Double side groove welds (but think it first), Practical Cost-Saving Ideas for the Design Profesional: Welding 5, (1998).

[4] S. Akellaa, B. Ramesh Kumarb, Distortion Control in TIG Welding Process with Taguchi Approach, Adv. Mater. Manuf. Characterization, 3(1) (2013) 199-206.

[5] J. P. Ganjigatti, D. K. Pratihar, A. Roy Choudhury, Modeling of the MIG welding process using statistical approaches, Int. J. Adv. Manuf. Technol. 35 (2008) 1166-1190.

DOI: 10.1007/s00170-006-0798-6

[6] U. Esme, M. Bayramoglu, Y. Kazancoglu, S. Ozgun, Optimization of weld bead geometry in TIG welding process using greyrelation analysis and Taguchi method, Mater. Technol. 43(3) (2009) 143-149.

[7] S. C. Juang, Y. S. Tarng, Process parameters selection for optimizing the weld pool geometry in the tungsten inert gas welding of stainless steel, J. Mater. Proc. Technol. 122(1) (2002) 33-37.

DOI: 10.1016/s0924-0136(02)00021-3

[8] M. Vasudevan, A. K. Bhaduri, B. Raj, K. P. Rao, Genetic-algorithm-based computational models for optimising the process parameters of A-Tig welding to achieve target bead geometry in type 304 L(N) and 316 L(N) stainless steels, Mater. Manuf. Proc. 22(5) (2007).

DOI: 10.1080/10426910701323342

[9] J. Norrish, Advanced Welding Processes, Inst. Phys. Bristol, (1992).

[10] R. S. Parmar, Welding Processes and Technology, Khana Publishers, Delhi, (1995).

[11] L. Fratini, G. Buffa, D. Palmeri, J. Hua, R. Shivpuri, Material flow in FSW of AA7075- T6 butt joints: continuous dynamic recrystallization phenomena. J. Eng. Mater. Technol. 128 (2006) 428–435.

DOI: 10.1115/1.2204946

[12] H. H. Uhlig, Uhligs Corrosion Handbook, 2 ed., John Wiley& Sons Inc., New Jersey, (2000).