書誌事項
- タイトル別名
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- Effects of Cooling Rate on the Properties of High-Manganese-Aluminium Bronze
- コウマンガン アルミニウム セイドウ ニ タイスル ショ セイシツ ト レイキャク ソクド ニ ツイテ
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In our previous report (Effect of Nickel, Iron and Manganese Addition on β→α+γ2 Transformation of Cu-Al Alloys), adding Mn to Al-bronze containing β phase was effective to stabilize β phase and depress the so-called self-annealing phenomenon. Based on that result, this experiment was carried out to decide the region free from γ2-precipitate which caused self-annealing in Cu-Al-Mn system. The microstructures and hardness of Cu-Al-Mn alloys containing 5∼12%Al and 4∼12%Mn, water quenched or treated at various cooling rate as 1, 0.15 and 0.02°C/min, was examined and noted in diagrams. Then the mechanical tests of Cu-9.5%Al-Mn and Cu 8%Al-Mn alloy castings containing various Mn amount were carried out on tensile strength, elongation and impact-value. The results obtained are summarized in the following: The microstructures of high Mn-Al-bronzes containing above 6 wt%Mn consist of α,β and Cu3Mn2Al phases and free from the precipitation of γ2 and it was suggested they show excellent mechanical properties even when slowly cooled, say, at 0.02°C/min.In the results of mechanical test, Cu-Al-Mn alloy containing β phase showed an increase of tensile strength and a slight decrease of elongation with the increase in Mn wt%, but did not show self-annealing when containing high Mn content.
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 25 (6), 397-401, 1961
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
- 1390001206482852224
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- NII論文ID
- 40018257941
- 130007334657
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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
- 9153381
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- データソース種別
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- JaLC
- NDL
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