Paper Title:
Electrochemical Evaluation on the Corrosion Properties of Welding Zones of 304 Stainless Steel
  Abstract

Two types of welding methods were performed on austenitic 304 stainless steel: laser welding and TIG welding. The differences of the corrosion characteristics of the welded zones from the two welding methods were investigated with electrochemical methods, such as measurement of the corrosion potential, polarization curves, cyclic voltammogram, etc. The Vickers hardness of all laser-welded zones (WM:Weld Metal, HAZ:Heat-Affected Zone, BM:Base Metal) was relatively higher while their corrosion current densities exhibited a comparatively lower value than those which were TIG welded. In particular, the corrosion current density of the TIG-welded HAZ had the highest value among all other welding zones, which suggests that chromium depletion due to the formation of chromium carbide occurs in the HAZ, which is in the sensitization temperature range, thus it can easily be corroded with an active anode. Intergrenular corrosion was also observed at the TIG-welded HAZ and WM zones. Consequently, we can see that corrosion resistance of all austenitic 304 stainless steel welding zones can be improved via the use of laser welding.

  Info
Periodical
Advanced Materials Research (Volumes 146-147)
Edited by
Sihai Jiao, Zhengyi Jiang and Jinglong Bu
Pages
1238-1242
DOI
10.4028/www.scientific.net/AMR.146-147.1238
Citation
K. M. Moon, Y. H. Kim, S. J. Kim, J. H. Yoon, Y. C. Lee, S. Y. Lee, M. S. Oh, "Electrochemical Evaluation on the Corrosion Properties of Welding Zones of 304 Stainless Steel", Advanced Materials Research, Vols. 146-147, pp. 1238-1242, 2011
Online since
October 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Sen Yang, Hiroyuki Kokawa, Zhan Jie Wang
Abstract:In order to modify grain boundary character distribution (GBCD) and to improve intergranualr corrosion (IGC) resistance of 304 stainless...
2473
Authors: T. Monetta, M. Montuori, Antonio Squillace, Francesco Bellucci
Abstract:The current research has assessed the correlation between welding parameters and corrosion behaviour for friction stir welded 6056 aluminium...
285
Authors: Bing Chen, Xiao Li, Yu Guang Fan
Chapter 13: Surface Engineering/Coatings
Abstract:Special SHY-99 anti-corrosion coatings are used for newly developed heat exchange equipment, to resist corrosion and leakage problem of...
1886
Authors: Feng Jun Lang, Ying Ma, Jian Rong Liu, Xian Qiu Huang, Mou Cheng Li
Chapter 1: Surface Engineering/Coatings
Abstract:The influence of passivation on pitting corrosion of 316L stainless steel in concentrated seawater was investigated by using cyclic anodic...
127
Authors: Hisataka Takagi, Takeyuki Abe, Peng Cui, Hiroyuki Sasahara
Chapter 2: Material Processing Technologies
Abstract:Direct metal lamination using arc discharge was applied to the repair of metal components such as metallic parts, dies and molds by adding...
440