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- Title
Effect of Metal-Cored Filler Wire on Surface Morphology and Micro-Hardness of Regulated Metal Deposition Welded ASTM A387-Gr.11-Cl.2 Steel Plates.
- Authors
Bandhu, Din; Djavanroodi, Faramarz; Shaikshavali, G.; Vora, Jay J.; Abhishek, Kumar; Thakur, Ashish; Kumari, Soni; Saxena, Kuldeep K.; Ebrahimi, Mahmoud; Attarilar, Shokouh
- Abstract
Environmental and human-friendly welding is the need of the hour. In this context, this study explores the application of the regulated metal deposition (RMD) technique for ASTM A387-Gr.11-Cl.2 steel plates. To examine the effect of metal-cored filler wire (MCFW), MEGAFIL 237 M was employed during regulated metal deposition (RMD) welding of 6 mm thick ASTM A387-Gr.11-Cl.2 steel plates. The welding was carried out at an optimized current (A) of 100 A, voltage (V) of 13 V, and gas flow rate (GFR) of 21 L/min. Thereafter, the as-welded plates were examined for morphological changes using optical microscopy. Additionally, the micro-hardness of the as-welded plates was measured to make corroboration with the obtained surface morphologies. In addition to this, the as-welded plates were subjected to heat treatment followed by surface morphology and micro-hardness examination. A comparison was made between the as-welded and heat-treated plates for their obtained surface morphologies and microhardness values. During this, it was observed that the weld zone of as-welded plates has a dendritic surface morphology which is very common in fusion-based welding. Similarly, the weld zone of heat-treated plates has a finer and erratic arrangement of martensite. Moreover, the obtained surface morphologies in the weld zone of as-welded and heat-treated plates have been justified by their respective hardness values of 1588.6 HV and 227.3 HV.
- Subjects
SURFACE morphology; WELDED joints; MICROHARDNESS; IRON &; steel plates; WELDING; HEAT treatment
- Publication
Materials (1996-1944), 2022, Vol 15, Issue 19, p6661
- ISSN
1996-1944
- Publication type
Article
- DOI
10.3390/ma15196661