Refining Crystal Grain of Inconel 718 by δ Process
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- Nishimaki Tomohiro
- Department of Mechanical Engineering, Graduate School of Science and Engineering, Tokyo Metropolitan University
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- Kakehi Koji
- Department of Mechanical Engineering, Graduate School of Science and Engineering, Tokyo Metropolitan University
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- Kawakami Yusuke
- Dowa Forging Co. Ltd.
Bibliographic Information
- Other Title
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- δ プロセスによるインコネル718の結晶粒微細化
- dプロセス ニ ヨル インコネル 718 ノ ケッショウリュウ ビサイカ
- Refining Crystal Grain of Inconel 718 by δ Process
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Abstract
The Ni-based superalloy Inconel 718 is used for aero-engine disks and is processed by forging and subsequent machine work. This study aimed to achieve uniformly fine crystal grain of Inconel 718 by the δ process, which prevents grain growth by applying a pinning force that intentionally precipitates any δ phase products. We observed the morphology of the δ phase, which changes according to the process of δ-phase precipitation heat treatment, and then prepared δ-processed Inconel 718 (DP718) by a small-size compression test that simulated the precision forging process. It was found that δ-processed specimens had finer and more uniform microstructures than the traditional processed Inconel 718.<br>
Journal
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- Journal of the Japan Institute of Metals and Materials
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Journal of the Japan Institute of Metals and Materials 79 (8), 385-390, 2015
The Japan Institute of Metals and Materials
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Keywords
Details 詳細情報について
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- CRID
- 1390282681458141440
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- NII Article ID
- 130005089988
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- NII Book ID
- AN00187860
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- ISSN
- 18806880
- 24337501
- 00214876
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- NDL BIB ID
- 026647349
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed