Effect of Hardfaced Interlayer Thickness and Low Hydrogen Ferritic Capping on Ballistic Performance of Shielded Metal Arc Welded Armour Steel Joints
M Balakrishnan1,V Balasubramanian1,G Madhusudhan Reddy2
��1. Center for Materials Joining and Research CEMAJOR, Department of Manufacturing Engineering, Annamalai University, Annamalai Nagar 608002, Tamil Nadu, India 2. Solidification Technology Division, Metal Joining Group, Defense Metallurgical Research Laboratory DMRL, Kanchanbagh 500058, Hyderabad, India��
Effect of Hardfaced Interlayer Thickness and Low Hydrogen Ferritic Capping on Ballistic Performance of Shielded Metal Arc Welded Armour Steel Joints
M Balakrishnan1,V Balasubramanian1,G Madhusudhan Reddy2
��1. Center for Materials Joining and Research CEMAJOR, Department of Manufacturing Engineering, Annamalai University, Annamalai Nagar 608002, Tamil Nadu, India 2. Solidification Technology Division, Metal Joining Group, Defense Metallurgical Research Laboratory DMRL, Kanchanbagh 500058, Hyderabad, India��
ժҪ Armour grade quenched and tempered steel closely confirming to AISI 4340 is well known for its superior ballistic performance and hence used in the fabrication of combat vehicles. The traditional fillers like austenitic stainless steel showed poor ballistic performance of these welded joints as compared to the base metal. Attempts have been made to deposit hardfaced interlayer between austenitic stainless steel weld metals. Though this method, marginal improvements in ballistic performance can be yielded, and cracks were observed in between base metal and hardfaced layer. Thickness of the hardfaced interlayer plays a vital role for the effective ballistic performance. Thus, an attempt has been made to investigate the effect of hardfaced interlayer thickness on ballistic performance of armour steel welds. The results of effect of buttering, low hydrogen ferritic (LHF) filler and three different hardfaced layer thicknesses (4, 5��5 and 7 mm) on ballistic performance of shielded metal arc welded armour steel joints were given.
Abstract��Armour grade quenched and tempered steel closely confirming to AISI 4340 is well known for its superior ballistic performance and hence used in the fabrication of combat vehicles. The traditional fillers like austenitic stainless steel showed poor ballistic performance of these welded joints as compared to the base metal. Attempts have been made to deposit hardfaced interlayer between austenitic stainless steel weld metals. Though this method, marginal improvements in ballistic performance can be yielded, and cracks were observed in between base metal and hardfaced layer. Thickness of the hardfaced interlayer plays a vital role for the effective ballistic performance. Thus, an attempt has been made to investigate the effect of hardfaced interlayer thickness on ballistic performance of armour steel welds. The results of effect of buttering, low hydrogen ferritic (LHF) filler and three different hardfaced layer thicknesses (4, 5��5 and 7 mm) on ballistic performance of shielded metal arc welded armour steel joints were given.
M Balakrishnan,V Balasubramanian,G Madhusudhan Reddy. Effect of Hardfaced Interlayer Thickness and Low Hydrogen Ferritic Capping on Ballistic Performance of Shielded Metal Arc Welded Armour Steel Joints[J]. �й������ڿ���, 2013, 20(12): 82-91.
M Balakrishnan,V Balasubramanian,G Madhusudhan Reddy. Effect of Hardfaced Interlayer Thickness and Low Hydrogen Ferritic Capping on Ballistic Performance of Shielded Metal Arc Welded Armour Steel Joints. Chinese Journal of Iron and Steel, 2013, 20(12): 82-91.
2013, Vol. 20 
