書誌事項
- タイトル別名
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- Influence of Co on Strength and Microstructure of Cu-Ni-Co-Si Alloy
- Cu-Ni-Co-Si ゴウキン ノ キョウド ト ソシキ ニ オヨボス Co ノ エイキョウ
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Cu-2.0wt%Ni-0.5wt%Si, Cu-1.4wt%Ni-0.6wt%Co-0.5wt%Si (0.6%Co) and Cu-1.0wt%Ni-1.0wt%Co-0.5wt%Si (1.0%Co) alloys produced by combining cold rolling to a 25% and a 90% reduction with aging treatment are employed to investigate the effects of Co on the strength and microstructure of Cu-Ni-Co-Si alloys. Aging the 0.6%Co and 1.0%Co alloys at 525, 425 and 325℃ produces orthorhombic (Ni, Co)2Si precipitates that have the same crystal system as Ni2Si precipitates formed in the 0%Co alloy. The larger the amount of Co in the three alloys is, the higher the dislocation density in the alloys peak-aged and rolled to a 25% and a 90% reduction is. The amounts of deformation twins observed in the 0.6%Co and 1.0%Co alloys peak-aged at 525℃ and rolled to a 90% reduction are much larger than that observed in the 0%Co alloy peak-aged at 525℃ and rolled to a 90% reduction. The strength and electrical conductivity of the three alloys initially aged at 525℃, rolled to a 25% reduction and re-aged at 425℃ (A25RA), or aged at 525℃, rolled to a 90% reduction and re-aged at 325℃ (A90RA) becomes higher as the Co content increases. The increase in strength with increasing the Co content is attributed to decrease in the inter-precipitate spacing and increase in the dislocation density for the A25RA alloys, and increase in the amount of deformation twins in addition to decrease in the inter-precipitate spacing and increase in the dislocation density for the A90RA alloys.
収録刊行物
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- 材料
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材料 63 (5), 401-408, 2014
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
- 1390282680421640448
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- NII論文ID
- 130004749897
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- NII書誌ID
- AA11556898
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- ISSN
- 18807488
- 05145163
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- NDL書誌ID
- 025547106
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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
- IRDB
- NDL
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- 抄録ライセンスフラグ
- 使用不可
