A comparative evaluation of microstructural and mechanical behavior of fiber laser beam and tungsten inert gas dissimilar ultra high strength steel welds

作     者：Jaiteerth R. JOSHI Mastanaiah POTTA Kumar ADEPU Ramesh Kumar KATTA Madhusudhan Reddy GANKIDI 

作者机构：Defence Research and Development Laboratory Kanchanbagh Hyderabad Telangana 500058 India National Institute of Technology Warangal Telangana 502205 India Defence Metallurgical Research Laboratory Kanchanbagh Hyderabad Telangana 500058 India 

出 版 物：《Defence Technology（防务技术）》 (Defence Technology)

年 卷 期：2016年第12卷第6期

页      面：464-472页

核心收录：

学科分类：080503[工学-材料加工工程] 0806[工学-冶金工程] 0817[工学-化学工程与技术] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 0701[理学-数学] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 080201[工学-机械制造及其自动化] 

主　　题：TIG welding Fiber laser AISI 4130 steel Laser beam welding Maraging steel 

摘      要：The influence of different welding processes on the mechanical properties and the corresponding variation in the microstructural features have been investigated for the dissimilar weldments of 18% Ni maraging steel 250 and AISI 4130 steel. The weld joints are realized through two different fusion welding processes, tungsten inert arc welding(TIG) and laser beam welding(LBW), in this study. The dissimilar steel welds were characterized through optical microstructures, microhardness survey across the weldment and evaluation of tensile properties. The fiber laser beam welds have demonstrated superior mechanical properties and reduced heat affected zone as compared to the TIG weldments.