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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/48220

Title: Stress Corrosion Cracking Susceptibility of 304L Substrate and 308L Weld Metal Exposed to a Salt Spray
Authors: Chia-Hao Hsu
Tai-Cheng Chen
Rong-Tan Huang
Leu-Wen Tsay
Contributors: 國立臺灣海洋大學:光電與材料科技學系
Keywords: 304L substrate
308L deposit
U-bend
stress corrosion cracking
weight loss
Date: 2017-02
Issue Date: 2018-08-16T07:06:50Z
Publisher: Materials
Abstract: AbstractL: 304 stainless steels (SS) were considered as the materials for a dry storage canister. In this study, ER (Electrode Rod) 308L was utilized as the filler metal for the groove and overlay welds of a 304L stainless steel substrate, which was prepared via a gas tungsten arc-welding process in multiple passes. The electron backscatter diffraction (EBSD) map was used to identify the inherent microstructures in distinct specimens. U-bend and weight-loss tests were conducted by testing the 304L substrates and welds in a salt spray containing 5 wt % NaCl at 80 °C to evaluate their susceptibility to stress corrosion cracking (SCC). Generally, the weight loss of the ER 308L deposit was higher than that of the 304L substrate in a salt spray in the same sample-prepared condition. The dissolution of the skeletal structure in the fusion zone (FZ) was responsible for a greater weight loss of the 308L deposit, especially for the cold-rolled and sensitized specimen. Cold rolling was detrimental and sensitization after cold rolling was very harmful to the SCC resistance of the 304L substrate and 308L deposit. Overall, the SCC susceptibility of each specimen was correlated with its weight loss in each group.
Relation: 10(2)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/48220
Appears in Collections:[光電科學研究所] 期刊論文

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