書誌事項
- タイトル別名
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- Effect of Precipitation of δ-Phase on the Strength of Grain Boundaries in Ni-Base Superalloy GH4169 at Elevated Temperatures
抄録
<p>In order to quantitatively clarify the effect of δ-phase precipitation on the strength of grain boundary in Ni-based superalloy GH4169 at elevated temperatures, which is expected to be used in aircraft engines, uniaxial tensile tests at 800°C were conducted on specimens with different amounts of δ-phase precipitation, and the microstructural changes were analyzed using laser microscopy and EBSD. The microstructural changes were analyzed by laser microscopy and EBSD. It was confirmed that the alloy with δ-phase precipitation (GH4169) fractured at 800°C with necking. EBSD analysis showed that the high-density dislocations occurred only in the region of a few μm near the grain boundary. Furthermore, the strength of the specimens with δ-phase precipitation was lower than that of the specimens without δ-phase precipitation, indicating that the δ-phase precipitation caused a decrease in the material strength. The amount of δ-phase precipitation increased with increasing heating time and the strength decreased accordingly, suggesting the possibility of using the amount of δ-phase precipitation near the grain boundary to evaluate the grain boundary strength.</p>
収録刊行物
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- M&M材料力学カンファレンス
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M&M材料力学カンファレンス 2021 (0), OS0803-, 2021
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
- 1390573242713943040
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- ISSN
- 24242845
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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
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- 抄録ライセンスフラグ
- 使用不可