書誌事項
- タイトル別名
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- Non-destructive Evaluation of Precipitation of NbC in Alloy 625 around Grain Boundaries under Creep Loading at Elevated Temperature
抄録
<p>In the Ni-based superalloy Alloy 625, which has been developed for the next-generation high-efficiency thermal power plant, Nb carbides precipitate at grain boundaries during operation at elevated temperatures under high-load conditions. This growth of precipitates degrades the long-term reliability of the alloy, because the growth of creep voids are accelerated around it, and thus, grain boundary cracking is accelerated. Therefore, continuous monitoring of carbide precipitates near grain boundaries in the material used for pressure vessels, pipes, and turbine blade during operating is an essential issue to prevent accidental fracture. In this study, a new non-destructive detecting method of Nb-base precipitates in the atmosphere was proposed by measuring the spatial element distribution using the reflectance spectrum of visible lights. The growth of the precipitates was observed under creep loading at 750oC.</p>
収録刊行物
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- 年次大会
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年次大会 2020 (0), J03135-, 2020
一般社団法人 日本機械学会
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詳細情報 詳細情報について
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- CRID
- 1390568937775674112
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- NII論文ID
- 130008003513
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- ISSN
- 24242667
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可