書誌事項
- タイトル別名
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- Effect of Cold Working on the Damping Capacity of Al-Co Alloys
- Al Coケイ ゴウキン ノ ゲンスイノウ ニ オヨボス レイカン カコウ ノ
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The effect of cold working on the logarithmic decrement δ and the mechanical properties were investigated for Al-Co alloys containing 0.2 to 10.0%Co. δ and the rigidity modulus G were measured at room temperatures with an inverted torsion pendulum, and the tensile strength σt with an Instron-type tensile testing machine.<BR>The heat-treated alloys showed a slight increase in δ by the Co addition, but the value of δ remained as low as 9×10−3. At the same Co concentration the value of δ after furnace cooling was somewhat higher than that after water quenching. By cold working after heat-treatments, the value of δ considerably increased with increasing reduction in cross-sectional area, RA, for all alloys. With the increase in Co concentration, the value of δ after cold working steeply increased at first and above 1%Co, δ showed saturation for small RA or tended to decrease for large RA. Moreover, the alloys cold-worked after furnace cooling were higher in δ than those cold-worked after water quenching. The increment in δ by cold working was considered to be due to a remarkable increase in dislocation density.<BR>With increasing Co concentration, both G and σt of the heat-treated specimens increased but σt became almost constant above 2%Co. Cold working after heat-treatments gave a decrease in G and an increase in σt.
収録刊行物
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- 日本金属学会誌
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日本金属学会誌 53 (2), 227-231, 1989
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390282681461144448
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- NII論文ID
- 130007337227
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- NII書誌ID
- AN00187860
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- ISSN
- 18806880
- 24337501
- 00214876
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- NDL書誌ID
- 3222758
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- JaLC
- NDL
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