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ID 25940
本文ファイル
著者
Baoa, Gang
キーワード
Cr depletion
IGC/IGSCC susceptibility
Inconel 182
LSM
precipitation
NDC
金属工学・鉱山工学
抄録(英)
Thermodynamic and kinetic modeling was conducted to simulate Cr depletion profiles near grain boundaries in Inconel 182 during heat treatments and laser surface melting (LSM) using Thermo-Calc and DICTRA code. The effect of Nb addition was also considered in the modeling. Based on the good agreement with Cr concentration distributions during the heat treatments measured experimentally, Cr depletion profiles adjacent to grain boundaries during the heat treatments and the LSM process were modeled. The Cr depletion profiles were evaluated using the Cr depletion area below the critical Cr concentration for IGC/IGSCC (Intergranular Cracking/Intergranular Stress Corrosion Cracking) susceptibility (12 mass%). Compared with the result of the Streicher test, the calculated Cr depletion areas showed good agreement with IGC/IGSCC susceptibilities. The sample after stress relief (SR) treatment had the largest Cr depletion area and showed the poorest IGC/IGSCC resistance. Cr depletion showed some recovery during subsequent low temperature sensitization (LTS). The sample after the LSM process had the smallest Cr depletion area and showed the best IGC/IGSCC resistance.
掲載誌名
Journal of Materials Processing Technology
209巻
1号
開始ページ
416
終了ページ
425
出版年月日
2009-01-01
出版者
Elsevier Science S.A.
ISSN
0924-0136
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
author
権利情報
Copyright (c) 2008 Published by Elsevier B.V.
関連情報URL
部局名
工学研究科