Experimental Characterization of Electron Beam Welded SAE 5137H Thick Steel Plate

2017 2nd International Conference on Advanced Materials Research and Manufacturing Technologies

材料科学;机械制造

Singh, Rajkumar^1 ; Kattire, Prakash^1 ; Bhawar, Valmik^1 ; Thakare, Sandeep^1 ; Patil, Sachin^1 ; Mane, Santosh^1

Bharat Forge Ltd, Maharashtra, Pune, India^1

关键词: Equiaxed dendrite;    Experimental characterization;    Fusion welding;    Fusion zones;    High velocity;    Metallurgical properties;    Micro-structural observations;    Thick steel plates;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/229/1/012028/pdf
DOI  :  10.1088/1757-899X/229/1/012028

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Electron beam welding is known for its narrow weld zone with high depth to width ratio, less heat affected zone, less distortion and contamination. Electron beam welding is fusion welding process, where high velocity electrons impinge on material joint to be welded and kinetic energy of this electron is transformed into heat upon impact to fuse the material. In the present work electron beam welding of 60 mm thick SAE 5137H steel is studied. Mechanical and metallurgical properties of electron beam welded joint of SAE 5137H were evaluated. Mechanical properties are analysed by tensile, impact and hardness test. Metallurgical properties are investigated through optical and scanning electron microscope. The hardness traverse across weld zone shows HV 370-380, about 18% increase in the tensile strength and very low toughness of weld joint compared to parent metal. Microstructural observation shows equiaxed dendrite in the fusion zone and partial grain refinement was found in the HAZ.