δ プロセスによるインコネル718の結晶粒微細化

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タイトル別名
  • Refining Crystal Grain of Inconel 718 by δ Process
  • 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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抄録

  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>

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 79 (8), 385-390, 2015

    公益社団法人 日本金属学会

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