Cold Cracking of Flux Cored Arc Welded Armour Grade High Strength Steel Weldments  

作　　者：G.Magudeeswaran V.Balasubramanian G.Madhusudhan Reddy 

机构地区：[1]Metal Joining Research Center(MJRC),Sri Ramakrishna Engineering College [2]Centre for Materials Joining & Research(CEMAJOR),Department of Manufacturing Engineering,Annamalai University [3]Metal Joining Section,Defence Metallurgical Research Laboratory(DMRL)

出　　处：《Journal of Materials Science & Technology》2009年第4期516-526,共11页材料科学技术（英文版）

基　　金：Armament Research Board (ARMREB),New Delhi for funding this projectwork (Project No MAA/03/41)

摘　　要：In this investigation, an attempt has been made to study the influence of welding consumables on the factors that influence cold cracking of armour grade quenched and tempered （Q＆.T） steel welds. Flux cored arc welding （FCAW） process were used making welds using austenitic stainless steel （ASS） and low hydrogen ferritic steel （LHF） consumables. The diffusible hydrogen levels in the weld metal of the ASS and LHF consumables were determined by mercury method. Residual stresses were evaluated using X-ray stress analyzer and implant test was carried out to study the cold cracking of the welds. Results indicate that ASS welds offer a greater resistance to cold cracking of armour grade Q＆T steel welds.In this investigation, an attempt has been made to study the influence of welding consumables on the factors that influence cold cracking of armour grade quenched and tempered （Q＆.T） steel welds. Flux cored arc welding （FCAW） process were used making welds using austenitic stainless steel （ASS） and low hydrogen ferritic steel （LHF） consumables. The diffusible hydrogen levels in the weld metal of the ASS and LHF consumables were determined by mercury method. Residual stresses were evaluated using X-ray stress analyzer and implant test was carried out to study the cold cracking of the welds. Results indicate that ASS welds offer a greater resistance to cold cracking of armour grade Q＆T steel welds.

关 键 词：Quenched and tempered steel Flux cored arc welding process Weld cold cracking Implant testing 

分 类 号：TG142.1[一般工业技术—材料科学与工程]