書誌事項
- タイトル別名
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- Effects of Aging Condition and Humidity on Fatigue Properties of Maraging Steel
- マルエージングコウ ノ ヒロウ トクセイ ニ オヨボス ジコウ ジョウケン ト シツド ノ エイキョウ
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In order to investigate the effects of aging condition and humidity on fatigue properties of 18%Ni maraging steel of grade 350, rotating bending fatigue tests were carried out in relative humidity of 25% and 85%. Aging conditions selected were under- and peak-aging ones at conventional aging temperature of 753K. In addition, double aging treatments, that is, under- peak- and over-aging treatments at 673K after the peak-aging at 753K were also examined. Both of static and fatigue strengths were increased by the double aging. Although the fatigue strength was markedly decreased by high humidity in all of the steels, the decrease in fatigue strength due to high humidity was suppressed by the double aging. In all of the steels, the change in growth behavior of a crack was yielded around the crack length of a few grain sizes of prior austenite regardless of humidity. The growth rate of a crack longer than the above stated length was hardly influenced by the aging condition and humidity, while both of an initiation and its early propagation of a fatigue crack were accelerated by anodic dissolution in high humidity. These results were discussed from a point of view of the difference in precipitates depending on the aging condition.
収録刊行物
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- 材料
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材料 61 (9), 787-794, 2012
公益社団法人 日本材料学会
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詳細情報 詳細情報について
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- CRID
- 1390001205445962624
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- NII論文ID
- 130002084929
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- NII書誌ID
- AN00096175
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- COI
- 1:CAS:528:DC%2BC38Xhs1Sqt7vM
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- ISSN
- 18807488
- 05145163
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- NDL書誌ID
- 024008970
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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
- NDL
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- 抄録ライセンスフラグ
- 使用不可