Evaluation of Zero and Sub-zero Temperature Tensile and Impact Properties of Quenched and Tempered Steel Weldments
M. BALAKRISHNAN1,V. BALASUBRAMANIAN2,M��A. MUTHU MANICKAM3
1. Department of Mechanical Engineering, M. Kumarasamy College of Engineering Autonomous, Thalavapalayam,Karur 639113, Tamil Nadu, India 2. Center for Materials Joining & Research CEMAJOR, Department of Manufacturing Engineering, Annamalai University, Annamalainagar 608002, Tamil Nadu, India 3. Combat Vehicles Research and Development Establishment CVRDE, Avadi, Chennai 600054, Tamil Nadu, India
Evaluation of Zero and Sub-zero Temperature Tensile and Impact Properties of Quenched and Tempered Steel Weldments
M. BALAKRISHNAN1,V. BALASUBRAMANIAN2,M��A. MUTHU MANICKAM3
1. Department of Mechanical Engineering, M. Kumarasamy College of Engineering Autonomous, Thalavapalayam,Karur 639113, Tamil Nadu, India 2. Center for Materials Joining & Research CEMAJOR, Department of Manufacturing Engineering, Annamalai University, Annamalainagar 608002, Tamil Nadu, India 3. Combat Vehicles Research and Development Establishment CVRDE, Avadi, Chennai 600054, Tamil Nadu, India
ժҪ Combat vehicles using armour grade quenched and tempered (Q&T) steel are needed to be operated under different climatic conditions. However, the properties meeting the room temperature test conditions may not necessarily be required to meet the low temperature operating conditions. The influences of shielded metal arc welding (SMAW) process, flux cored arc welding (FCAW) processes and test temperatures below room temperature up to -60 �� on tensile and impact toughness properties of armour grade Q&T steel welds were reported. The tensile and impact properties of the joints showed incremental trend with respect to the decrement in test temperature up to -40 �� irrespective of the welding processes used. The increment in tensile and impact properties of SMAW and FCAW joints subjected to the low temperature environment is due to plastic strain-induced phase transformation of retained austenite into martensite phase. Among the two processes, SMAW process welded joint showed better tensile and impact properties than its FCAW counterpart joints.
Abstract��Combat vehicles using armour grade quenched and tempered (Q&T) steel are needed to be operated under different climatic conditions. However, the properties meeting the room temperature test conditions may not necessarily be required to meet the low temperature operating conditions. The influences of shielded metal arc welding (SMAW) process, flux cored arc welding (FCAW) processes and test temperatures below room temperature up to -60 �� on tensile and impact toughness properties of armour grade Q&T steel welds were reported. The tensile and impact properties of the joints showed incremental trend with respect to the decrement in test temperature up to -40 �� irrespective of the welding processes used. The increment in tensile and impact properties of SMAW and FCAW joints subjected to the low temperature environment is due to plastic strain-induced phase transformation of retained austenite into martensite phase. Among the two processes, SMAW process welded joint showed better tensile and impact properties than its FCAW counterpart joints.
M. BALAKRISHNAN,V. BALASUBRAMANIAN,M��A. MUTHU MANICKAM. Evaluation of Zero and Sub-zero Temperature Tensile and Impact Properties of Quenched and Tempered Steel Weldments[J]. �й������ڿ���, 2016, 23(11): 1177-1187.
M. BALAKRISHNAN,V. BALASUBRAMANIAN,M��A. MUTHU MANICKAM. Evaluation of Zero and Sub-zero Temperature Tensile and Impact Properties of Quenched and Tempered Steel Weldments. Chinese Journal of Iron and Steel, 2016, 23(11): 1177-1187.
2016, Vol. 23 
