ANALYSIS OF MICROSTRUCTURE AND HARDNESS OF WELDED JOINTS OF DISSIMILAR STEEL OF AISI 1018 - AISI 304
DOI:
https://doi.org/10.17146/jsmi.2019.20.4.5280Keywords:
Shield Metal Arc Welding (SMAW), Baja karbon rendah AISI 1018, Baja tahan karat AISI 304, Pengelasan tak sejenisAbstract
This research studies the microstructure and hardness property of shield metal arc welding (SMAW) from dissimilar metals between austenitic stainless steel (SS) AISI 304 and low carbon steel (LCS) AISI 1018 using E308 filler metal. The procedure used was LCS-to-LCS welding carried out without post weld heat treatment (PWHT) and SS-to-SS welding followed by PWHT at a temperature of 1000ÚC and holding time for 12 minutes. Then, it was followed by shock cooling in aqueous media. The difference in PWHT stages in the two procedures is expected to affect the microstructure and hardness of the welding results. This was conducted to find out more precise procedures in the SMAW technique for welding dissimilar metals like AISI 304 with AISI 1018 so that the risk of chromium carbide precipitate formation and the low hardness of welded joints can be reduced. The results showed there were chromium carbide precipitates in the heat-affected zone (HAZ) of AISI 304, grain enlargement in the HAZ area of both steels, as well as the formation of the ferrite delta phase in the welding area by LCS-to-LCS welding. While the value of hardness in the HAZ area of AISI 304 has decreased, increases occur in the HAZ area of AISI 1018 in all welding conditions. In addition, PWHT treatment can increase the hardness on the AISI 1018 side due to the formation of the martensite phase, decrease in the hardness value on the AISI 304 side, and the reduced ferrite delta phase and the number of chromium carbide precipitates.
Downloads
References
. P. M P and G. R. Kannan, Optimization of laser
welding process parameters in dissimilar joint of
stainless steel AISI316/AISI1018 low carbon steel
to attain the maximum level of mechanical properties
through PWHT. 2018, pp. 314-322.
. W. Chuaiphan, C. Ambhorn Somrerk, S. Niltawach,
and B. Sornil, Dissimilar welding between AISI 304
stainless steel and AISI 1020 carbon steel plates.
, pp. 283-290.
. S. Suwarno and A. Sahab, Prediksi Derajad
Presipitasi Karbida Krom pada Baja Tahan Karat Austenitik dengan Metode Jaringan Syaraf Tiruan.
. J. C. Lippold and D. J. Kotecki, “Welding metallurgy
and weldability of stainless steels,” (in English.),
. L. Griffing, Metals and their weldability. [Miami]:
American welding Society (in English), 1972.
. W. Wu, S. Hu, and J. Shen, “Microstructure,
mechanical properties and corrosion behavior of
laser welded dissimilar joints between ferritic
stainless steel and carbon steel,” Materials &
Design (1980-2015), vol. 65, pp. 855-861, 2015/01/
/ 2015, doi: https://doi.org/10.1016/
j.matdes.2014.09.064.
. S. Kou, “Welding metallurgy,” (in English), 2010.
. “ASTM E18-15, Standard Test Methods for
Rockwell Hardness of Metallic Materials,” ed. West
Conshohocken, PA: ASTM International, 2015.
. M. F. Buchely, H. A. Colorado, and H. E. Jaramillo,
“Effect of SMAW manufacturing process in highcycle fatigue of AISI 304 base metal using AISI
L filler metal,” Journal of Manufacturing
Processes, vol. 20, pp. 181-189, 2015/10/01/ 2015,
doi: https://doi.org/10.1016/j.jmapro.2015.08.005.
. R. Unnikrishnan et al., “Effect of heat input on the
microstructure, residual stresses and corrosion
resistance of 304L austenitic stainless steel
weldments,” Materials Characterization, vol. 93, pp.
-23, 2014/07/01/ 2014, doi: https://doi.org/
1016/j.matchar.2014.03.013.
. A. Y. Jang, D. J. Lee, S. H. Lee, J. H. Shim, S. W.
Kang, and H. W. Lee, “Effect of Cr/Ni equivalent
ratio on ductility-dip cracking in AISI 316L weld
metals,” Materials & Design, vol. 32, no. 1, pp.
-376, 2011/01/01/ 2011, doi: https://doi.org/
1016/j.matdes.2010.06.016.
. S. Ghorbani, R. Ghasemi, R. Ebrahimi-Kahrizsangi,
and A. Hojjati-Najafabadi, “Effect of post weld heat
treatment (PWHT) on the microstructure,
mechanical properties, and corrosion resistance of
dissimilar stainless steels,” Materials Science and
Engineering: A, vol. 688, pp. 470-479, 2017/03/14/
, doi: https://doi.org/10.1016/
j.msea.2017.02.020.
. M. Gruber, G. Ressel, F. Méndez Martín, S. Ploberger,
S. Marsoner, and R. Ebner, “Formation and Growth
Kinetics of Reverted Austenite During Tempering
of a High Co-Ni Steel,” Metallurgical and Materials
Transactions A, vol. 47, no. 12, pp. 5932-5941, 2016/
/01 2016, doi: 10.1007/s11661-016-3760-8.
. M. R. A. Shawon, F. Gulshan, and A. S. W. Kurny,
“Effect of Welding Current on the Structure and
Properties of Resistance Spot Welded Dissimilar
(Austenitic Stainless Steel and Low Carbon Steel)
Metal Joints,” Journal of The Institution of
Engineers (India): Series D, vol. 96, no. 1, pp.
-36, 2015/04/01 2015, doi: 10.1007/s40033-014-
-6.
Downloads
Published
How to Cite
Issue
Section
License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
