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Microstructure and Mechanical Property in the Weld Heat-affected Zone of V-added Austenitic Fe-Mn-Al-C Low Density Steels
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  • Journal title : Journal of Welding and Joining
  • Volume 33, Issue 5,  2015, pp.31-34
  • Publisher : The Korean Welding and Joining Society
  • DOI : 10.5781/JWJ.2015.33.5.31
 Title & Authors
Microstructure and Mechanical Property in the Weld Heat-affected Zone of V-added Austenitic Fe-Mn-Al-C Low Density Steels
Moon, Joonoh; Park, Seong-Jun;
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 Abstract
Microstructure and tensile property in the weld heat-affected zone (HAZ) of austenitic Fe-Mn-Al-C low density steels were investigated through transmission electron microscopy analysis and tensile tests. The HAZ samples were prepared using Gleeble simulation with high heat input welding condition of 300 kJ/cm, and the HAZ peak temperature of was determined from differential scanning calorimetry (DSC) test. The strain- stress responses of base steels showed that the addition of V improved the tensile and yield strength by grain refinement and precipitation strengthening. Tensile strength and elongation decreased in the weld HAZ as compared to the base steel, due to grain growth, while V-added steel had a higher HAZ strength as compared than V-free steel.
 Keywords
Low density steel;Heat-Affected Zone (HAZ);Grain refinement;Precipitation strengthening Vanadium carbide;
 Language
English
 Cited by
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