Effect of Hardfaced Interlayer Thickness and Low Hydrogen Ferritic Capping on Ballistic Performance of Shielded Metal Arc Welded Armour Steel Joints

作     者：M Balakrishnan V Balasubramanian G Madhusudhan Reddy 

作者机构：Center for Materials Joining and Research(CEMAJOR)Department of Manufacturing EngineeringAnnamalai University Solidification Technology DivisionMetal Joining GroupDefense Metallurgical Research Laboratory(DMRL) 

出 版 物：《Journal of Iron and Steel Research International》 (Journal of Iron and Steel Research, International)

年 卷 期：2013年第20卷第12期

页      面：82-91页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：the Armament Research Board(ARMREB)  New Delhi Government of India for providing financial support to carry out this investigation through a research and development project  No.ARMREB/MAA/2008/93 

主　　题：armour steel low hydrogen ferritic electrode sandwich structure ballistic performance hardfacing metallography 

摘      要：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 stain- less 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, mar-- ginal 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 ar- mour steel welds. The results of effect of buttering, low hydrogen ferritic （LHF） filler and three different hardfaced layer thicknesses （4, 5.5 and 7 ram） on ballistid performance of shielded metal arc welded armour steel joints were given.