Warning: fopen(/home/virtual/kwjs/journal/upload/ip_log/ip_log_2022-08.txt): failed to open stream: Permission denied in /home/virtual/lib/view_data.php on line 83 Warning: fwrite() expects parameter 1 to be resource, boolean given in /home/virtual/lib/view_data.php on line 84 Microstructure and Mechanical Property in the Weld Heat-affected Zone of V-added Austenitic Fe-Mn-Al-C Low Density Steels

J Weld Join > Volume 33(5); 2015 > Article
Journal of Welding and Joining 2015;33(5):31-34.
DOI: https://doi.org/10.5781/JWJ.2015.33.5.31    Published online October 30, 2015.
Microstructure and Mechanical Property in the Weld Heat-affected Zone of V-added Austenitic Fe-Mn-Al-C Low Density Steels
Joonoh Moon*, Seong-Jun Park*
Correspondence:  Joonoh Moon,
Email: mjo99@kims.re.kr
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 1200℃ 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.
Key Words: Low density steel, Heat-Affected Zone (HAZ), Grain refinement, Precipitation strengthening Vanadium carbide


ABOUT
BROWSE ARTICLES
ARTICLE CATEGORY 
FOR CONTRIBUTORS
Editorial Office
#304, San-Jeong Building, 23, Gukhoe-daero 66-gil, Yeongdeungpo-gu, Seoul 07237, Korea
Tel: +82-2-538-6511    Fax: +82-2-538-6510    E-mail: koweld@kwjs.or.kr                

Copyright © 2022 by The Korean Welding and Joining Society.

Developed in M2PI