Effect of Heat Input on HAZ Properties and Microstructure of SMA490BW Corrosion Resistance Steel

Abstract:

Welding thermal cycle of SMA490BW corrosion resistance steel with different heat inputs were simulated by using Gleeble-3500 thermo-mechanical simulator to investigate the microstructure and impact toughness of the heat-affected zone (HAZ). The results shows that the microstructure of the coarse-grain heat affected zone(CGHAZ) is mainly composed of lath bainites and the surpass critical coarse-grain heat affected zone(SCCGHAZ) consists mainly of granular bainites with a small content of ferrites. The grain size increased with the heat input increasing, Besides, the impact energy of the surpass critical coarse-grain heat affected zone(SCCGHAZ) is higher than that of the coarse-grain heat affected zone(CGHAZ), when the heat input energy is 15kJ/cm after twice thermal cycle, the impact energy is highest.

• Periodical: Advanced Materials Research (Volume 337)
• Pages: 517-521
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.337.517
• Online since: September 2011
• Authors: Yuan Nie, Li Jun Wang, Chuan Ping Ma, Yong Hui Zhu, Da Li, Hui Chen, Zhi Yi Zhang, Xiang Yang Wu
• Keywords: Heat Affected Zone (HAZ), SMA490BW Corrosion Resistance Steel, Thermal Simulation, Welding Thermal Cycle

References

[1] Jiang Shanyu.:Wideand Heavyplate(2003).

[2] A. D. Jordan and O. N. C. Uwakweh: Materials Characterization 43:227–233 (1999)

[3] N.E. Glover and C.L. Davis: Scripta Mataialia Vol. 34, No. 5.pp.675-684(1996)

[4] Shaodong Wang and John Goldak: International Journal of Thermal Sciences 48 936–947 (2009).

[5] Bayram Kocabekir: Journal of materials processing technology 195 327–335 (2008).

[6] Yaowu Shi: Journal of materials processing technology 207 30–39 (2008).

[7] FU Rui-dong:Transactions of Materials and Heattreatmen February 2007 Vol.2 8No.1.

[8] Chu Chen, Yuechang Zhang: Machine Industry Publishers (1985).

[9] Wenyue Zhang: Machine Industry Publishers (2007).176-190.