Groove Angles Influence on Mechanical and Microstructural Properties of P460N Steel in SMAW

Abstract:

This study investigates mechanical and microstructural properties of P460N steel after Shielded Metal Arc Welding (SMAW). Three specimens with groove angles of 45 °, 60 ° and 75° were prepared and welded for this purpose. Tensile strength test, impact test, grain size test, macro and micro hardness test and metallographic test were performed on weld metal (WM), Heat Affected Zone (HAZ) and Base Metal (BM) and the results were compared. In the specimen with groove angle of 60°, yield strength was more than the base metal. Impact energy results in HAZ were different, so that HAZ areas in the specimens with 45° and 60° groove angles have less impact energy compared to the base metal but in the specimen with 75° groove angle, impact energy was more than the base metal. This increase can be due to formation of intermetallic compounds. After checking mechanical and microstructural properties of all the specimens, the groove angle of 60° was confirmed to be used at designing and construction of a reservoir with thickness of 14mm and working pressure of 40 bars.

• Periodical: Advanced Materials Research (Volumes 891-892)
• Pages: 1551-1558
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.891-892.1551
• Online since: March 2014
• Authors: Rouhollah Mohsen Pezeshkian*, Peyman Shayanfar, Saiedeh Shafaiepour
• Keywords: Fine Grain Steel, Groove Angle, HAZ, P460N, SMAW

References

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DOI: 10.22486/iwj.v31i1.177524

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