NDLI: Heat Treatment Effect on Pitting Corrosion of Super Duplex Stainless Steel UNS S32750 FCA Welds

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Heat Treatment Effect on Pitting Corrosion of Super Duplex Stainless Steel UNS S32750 FCA Welds

Content Provider	Semantic Scholar
Author	Jang, Bok-Su Moon, In-June Kim, Se-Cheol Koh, Jin-Hyun
Copyright Year	2013
Abstract	This study was carried out to investigate the influence of a sigma phase precipitation on the pitting corrosion resistance and microstructural change of super duplex stainless steels(UNS S32750). The welds made by FCAW (Flux Cored Arc Welding) were heat treated (, , ) and quenched. Based on the microstructural examination, it was found that the phase was formed in base metals and welds heat treated at while there were little phases formed in base metals and weld metal experienced the relatively fast cooling from and . On the other hand, the most weight loss due to pitting corrosion occurred in base and weld metals heat treated at . It was confirmed that the pitting corrosion occurred in the phase boundaries of ferrite/sigma and austenite/sigma. The pitting corrosion resistance decreased owing to an increase in Cr, Mo depleted areas adjacent to the intermetallic phases such as phases. The hardness was greatly increased due to the precipitation phases.
Starting Page	20
Ending Page	25
Page Count	6
File Format	PDF HTM / HTML
DOI	10.5781/KWJS.2013.31.5.20
Volume Number	31
Alternate Webpage(s)	http://ocean.kisti.re.kr/downfile/volume/kws/DHOJBN/2013/v31n5/DHOJBN_2013_v31n5_20.pdf
Alternate Webpage(s)	http://www.e-jwj.org/upload/JKWJS_31_5_19_25_2031530.pdf
Alternate Webpage(s)	https://doi.org/10.5781/KWJS.2013.31.5.20
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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