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| Effect of Welding Processes and Consumables on Tensile and Impact Properties of High Strength Quenched and Tempered Steel Joints |
| G Magudeeswaran1,V Balasubramanian1,G Madhusudhan Reddy2,T S Balasubramanian3 |
| 1. Center for Advanced Materials Joining and Research (CEMAJOR), Department of Manufacturing Engineering, Annamalai University, Annamalai Nagar��608 002, Tamil Nadu, India;2. Metal Joining Section, Defence Metallurgical Research Laboratory, Kanchanbagh Hyderabad��560 058, Andhra Pradesh, India; 3. Special Vehicles Division, Combat Vehicles Research and Development Establishment, Avadi Chennai��600 056, Tamil Nadu, India |
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Abstract Quenched and tempered steels are prone to hydrogen induced cracking in the heat affected zone after welding. The use of austenitic stainless steel consumables to weld the above steel was the only available remedy because of higher solubility for hydrogen in austenitic phase. In this investigation, an attempt was made to determine a suitable consumable to replace expensive austenitic consumables. Two different consumables, namely, austenitic stainless steel and low hydrogen ferritic steel, were used to fabricate the joints by shielded metal arc welding (SMAW) and flux cored arc welding (FCAW) processes. The joints fabricated by using low hydrogen ferritic steel consumables showed superior transverse tensile properties, whereas joints fabricated by using austenitic stainless steel consumables exhibited better impact toughness, irrespective of the welding process used. The SMAW joints exhibited superior mechanical and impact properties, irrespective of the consumables used, than their FCAW counterparts.
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Received: 01 January 1900
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2008, Vol. 15 
