ID | 115405 |
タイトル別表記 | Precipitation Behavior of Wrought Fe-Ni-Based Alloy HR6W
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著者 |
井和丸, 新
東京工業大学|日本精工
寺田, 芳弘
東京工業大学
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キーワード | iron-nickel-based alloy
age-hardening
microstructure
Laves phase
time-temperature precipitation (TTP) diagram
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資料タイプ |
学術雑誌論文
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抄録 | Age-hardening behavior of Fe-Ni-based alloy HR6W was investigated at the temperature range between 973 K and 1073 K. Two-step increase in hardness is detected for the alloy at each temperature; the first increase in hardness results from the precipitation of M23C6 phase and the second one corresponds to that of Laves phase. The TTP (time-temperature precipitation) diagram for the alloy is established based on the results of hardness measurement and microstructure observation, where the precipitation of Laves phase is slower than that of M23C6 phase by three orders of magnitude and the nose temperature of Laves phase is above 1073 K. The M23C6 phase precipitates with plate-like morphology along grain-boundaries at the early stage of aging, followed by the precipitation of Laves phase with granular morphology with increasing aging time. It is found that the M23C6 and Laves phases are aligned under stress condition, due to their precipitation on the dislocations introduced during creep deformation.
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掲載誌名 |
日本金属学会誌
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ISSN | 00214876
18806880
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cat書誌ID | AN00062446
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出版者 | 日本金属学会
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巻 | 83
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号 | 1
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開始ページ | 30
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終了ページ | 35
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発行日 | 2018-12-25
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フルテキストファイル | |
言語 |
jpn
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著者版フラグ |
出版社版
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部局 |
理工学系
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