The effect of shielded metal arc and gas tungsten arc welding methods on 308L stainless steel weldments

Shao Pin Lin, Ge Ping Yu, J. Y. Huang, H. J. Chen, R. C. Kuo, E-Wen Huang, Jia Hong Huang

研究成果: Conference contribution同行評審

摘要

Shielded metal arc (SMA) and gas tungsten arc (GTA) weldments were investigated to study the welding effects on the mechanical behavior of 308L austenitic stainless steel weldments, respectively. Both SMA and GTA weldments showed dendritic microstructure. The observed austenitic stainless steel welds solidified to give primary ferrite and secondary austenite as the ferritic-austenitic solidification mode (FA-mode) solidification. However, the lower heat input with larger Cr-versus-Ni ratio in SMA weld process led to lathy ferrite morphology and more residual ferrite in the SMA welds, while vermicular ferrite morphology was shown in GTA weldments. The yield strength of the welds significantly increased with decreasing elongation, which was mainly due to the dual phase strengthening effect after rapid solidification during welding.

原文English
主出版物標題THERMEC 2013
編輯B. Mishra, Mihail. Ionescu, T. Chandra
發行者Trans Tech Publications Ltd.
頁面2753-2757
頁數5
ISBN(列印)9783038350736
DOIs
出版狀態Published - 2014
事件8th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2013 - Las Vegas, NV, United States
持續時間: 2 12月 20136 12月 2013

出版系列

名字Materials Science Forum
783-786
ISSN(列印)0255-5476
ISSN(電子)1662-9752

Conference

Conference8th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2013
國家/地區United States
城市Las Vegas, NV
期間2/12/136/12/13

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