Hydrogen-induced Internal Friction of Duplex Stainless Steels

Kuroda, Toshio

doi:https://doi.org/10.18910/9299

Hydrogen-induced Internal Friction of Duplex Stainless Steels

Kuroda, Toshio

Transactions of JWRI, 2007, 36(2), 61-66

アクセス数:341件（2026-02-16 01:11 集計）

固定URL: https://doi.org/10.18910/9299

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タイトル	Hydrogen-induced Internal Friction of Duplex Stainless Steels
著者	NRID 1000000107096 1000000107096 著者名 Kuroda, Toshio
キーワード等	Duplex stainless Steel
	Internal Friction
	Hydrogen
	Weld Metal
	Austenite
	Snoek Peak
	Sigma Phase
抄録	Hydrogen behavior in duplex stainless steel and its weld metals was investigated by means of internal friction measurement. The internal friction measurements were conducted over a temperature range from 77 K to 373 K by using an inverted torsion pendulum for a frequency of 1.5 Hz. A significant peak appeared at 245K after hydrogen charging of the base metal and the weld metals. The peak height increased with increasing hydrogen concentration. The peak was associated with hydrogen in austenite. As the specimens were heated at 1023 K for various times, sigma phase consisting of Fe-Cr compound precipitated in the ferrite at the ferrite/austenite interface. The broadening of the internal friction peak at 245 K and scattering of internal friction value took place after hydrogen charging for the sigma phase precipitation. Overlapped two peaks of the peak associated with hydrogen in austenite and the peak associated with hydrogen in sigma phase were observed. The precipitation of sigma phase suppressed the diffusion of hydrogen in duplex stainless steel and the weld metal. It is considered that hydrogen was dissolved in the sigma phase on the basis of the hydrogen measurement and internal friction measurement.
出版者	大阪大学接合科学研究所
	オオサカダイガクセツゴウカガクケンキュウジョ
	Joining and Welding Research Institute, Osaka University
収録物名	Transactions of JWRI
巻(号)	36(2)
ページ	61-66
刊行年月	2007-12
言語	英語
ハンドルURL	https://hdl.handle.net/11094/9299
DOI	https://doi.org/10.18910/9299
PISSN	03874508
NCID	AA00867058
アクセス権	open access
出版タイプ	Version of Record
カテゴリ	紀要論文 Departmental Bulletin Paper
カテゴリ	Transactions of JWRI / Vol.36 No.2 (2007-12)

資源タイプ	紀要論文
ローカル資源タイプ	紀要論文
DCMI資源タイプ	text
DCTERMS.bibliographicCitation	Transactions of JWRI. 2007, 36(2), p. 61-66
DC.title	Hydrogen-induced Internal Friction of Duplex Stainless Steels
DC.creator	Kuroda, Toshio
DC.publisher	大阪大学接合科学研究所
	オオサカダイガクセツゴウカガクケンキュウジョ
	Joining and Welding Research Institute, Osaka University
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2007-12
DC.subject	Duplex stainless Steel
	Internal Friction
	Hydrogen
	Weld Metal
	Austenite
	Snoek Peak
	Sigma Phase
DCTERMS.abstract	Hydrogen behavior in duplex stainless steel and its weld metals was investigated by means of internal friction measurement. The internal friction measurements were conducted over a temperature range from 77 K to 373 K by using an inverted torsion pendulum for a frequency of 1.5 Hz. A significant peak appeared at 245K after hydrogen charging of the base metal and the weld metals. The peak height increased with increasing hydrogen concentration. The peak was associated with hydrogen in austenite. As the specimens were heated at 1023 K for various times, sigma phase consisting of Fe-Cr compound precipitated in the ferrite at the ferrite/austenite interface. The broadening of the internal friction peak at 245 K and scattering of internal friction value took place after hydrogen charging for the sigma phase precipitation. Overlapped two peaks of the peak associated with hydrogen in austenite and the peak associated with hydrogen in sigma phase were observed. The precipitation of sigma phase suppressed the diffusion of hydrogen in duplex stainless steel and the weld metal. It is considered that hydrogen was dissolved in the sigma phase on the basis of the hydrogen measurement and internal friction measurement.
DC.identifier	10.18910/9299
DC.format	9299
citation_title	Hydrogen-induced Internal Friction of Duplex Stainless Steels
citation_author	Kuroda, Toshio
citation_publisher	大阪大学接合科学研究所
citation_language	英語
citation_date	2007-12
citation_journal_title	Transactions of JWRI
citation_volume	36
citation_issue	2
citation_firstpage	61
citation_lastpage	66
citation_public_url	https://hdl.handle.net/11094/9299
citation_doi_detail	10.18910/9299
citation_doi	https://doi.org/10.18910/9299

Hydrogen-induced Internal Friction of Duplex Stainless Steels

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