Article ASME Grade 91鋼大型溶接継手の長時間クリープ損傷の非破壊評価とその有効性検討

澤田 浩太 SAMURAI ORCID (構造材料研究拠点/構造材料試験プラットフォーム, 物質・材料研究機構ROR) ; 谷内 泰志 SAMURAI ORCID (構造材料研究拠点/構造材料試験プラットフォーム/クリープグループ, 物質・材料研究機構ROR) ; 野島 健大 SAMURAI ORCID (構造材料研究拠点/構造材料試験プラットフォーム/クリープグループ, 物質・材料研究機構ROR) ; 木村 一弘 SAMURAI ORCID (構造材料研究拠点, 物質・材料研究機構ROR) ; 木村尭弘 (株式会社IHI) ; 野村恭兵 (株式会社IHI) ; 齋藤規子 (株式会社IHI) ; 森田 聡 (関西電力) ; 早川弘之 (九州電力株式会社) ; 杉内栄夫 (中国電力) ; 大櫃和成 (中国電力) ; 石原潤一 (中国電力) ; 屋口正次 (電力中央研究所) ; 西沢孝壽 (東京電力ホールディングス) ; 飯田英男 (東京電力ホールディングス) ; 大井浩二 (東京パワーテクノロジー) ; 西岡智也 (日鉄テクノロジー) ; 江見直哉 (日鉄テクノロジー) ; 岡田浩一 (日鉄テクノロジー) ; 駒井伸好 (三菱重工業) ; 林 恭平 (三菱重工業) ; 富永　公彦 (三菱重工業)

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澤田 浩太, 谷内 泰志, 野島 健大, 木村 一弘, 木村尭弘, 野村恭兵, 齋藤規子, 森田 聡, 早川弘之, 杉内栄夫, 大櫃和成, 石原潤一, 屋口正次, 西沢孝壽, 飯田英男, 大井浩二, 西岡智也, 江見直哉, 岡田浩一, 駒井伸好, 林 恭平, 富永　公彦. ASME Grade 91鋼大型溶接継手の長時間クリープ損傷の非破壊評価とその有効性検討. Zairyo/Journal of the Society of Materials Science, Japan. 2023, 72 (10), 705-712. https://doi.org/10.48505/nims.4253
SAMURAI

Alternative title: Nondestructive Evaluation of Long-Term Creep Damage and Its Availability in ASME Grade 91 Steel Welds

Description:

(abstract)

In order to evaluate residual creep life of ASME Grade 91 weldment, Phased Array Ultrasonic Testing (PAUT), High Temperature Superconductor - direct current - Superconducting Quantum Interference Device (ECT・HTS-dc-SQUID), observation of replica and hardness measurement were used to detect creep damages for creep interrupted specimens. It was clarified that the threshold of the creep damage that PAUT and ECT・HTS-dc-SQUID could detect appear in later stage of creep deformation. Creep voids were detected on the replica obtained from surface of creep specimens just before creep rupture. Capacitive strain sensor, laser displacement meter and SPICA strain measurement were tried to detect creep strain. Creep curves by the capacitive strain sensor and laser displacement meter were similar with that of conventional extensometer with a linear gauge. Strain measured by SPICA in heat affected zone monotonously increased during creep. Strain measured by capacitive strain sensor, laser displacement meter and SPICA and damage detected by PAUT and ECT・HTS-dc-SQUID were assumed to be useful for residual creep life assessment.

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  • In Copyright
    著作権は公益社団法人日本材料学会（The　Society of Materials Science，Japan）が保有

Keyword: Gr.91 steel welds, residual creep life, creep damage detection, nondestructive method

Date published: 2023-10-15

Publisher: 日本材料学会

Journal:

  • Zairyo/Journal of the Society of Materials Science, Japan (ISSN: 05145163) vol. 72 issue. 10 p. 705-712

Funding:

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.4253

First published URL: https://doi.org/10.2472/jsms.72.705

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Updated at: 2023-10-31 11:34:35 +0900

Published on MDR: 2023-10-31 13:30:09 +0900

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