Al-Cu-Cd合金における低温時効遅滞の機構
Al-Cu-Cd合金における低温時効遅滞の機構
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DOI：
10.2464/jilm.22.10_599
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发表时间：
1972-10
期刊：
影响因子：
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通讯作者：
寿子 鈴木;幹宏 菅野;和義 福永
中科院分区：
文献类型：
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作者：
寿子 鈴木;幹宏 菅野;和義 福永
本文作者对解释Al-Cu-Sn合金时效延迟的空位俘获模型进行了检验，得出的结论是该模型是不充分的，不能接受。本研究试图在Al-Cu-Cd系中进一步研究这一问题，并对含3%和4%（质量分数）的两种合金系进行了研究Cu被使用。在每个合金体系中，Cd含量从0 wt.%至0.37wt.%。研究结果表明：（1）固溶温度下为单相时，低温下不存在时效延迟现象;然而，在两相样品中，随着Cd含量的增加，明显地看到了延迟。(2)发现该合金系中的延迟也是由于在固溶温度下Cu在α相中的固溶度降低所致，与Al-Cu-Sn合金一样。(3)本研究再次证明了以空位捕获模型来解释衰老延缓的理论是错误的。
The vacancy-trapping model to explain aging retardation in Al-Cu-Sn alloys had been examined by the present authors and the conclusion obtained was that the model had been inadequate and not acceptable. The present study, therefore, was attempted to further examine the same subject in the Al-Cu-Cd system.Two sorts of alloy systems with 3 and 4wt.% Cu were used. In each alloy system, the Cd content was care-fully varied from 0wt.% to 0.37wt.%.The results obtained were as follows:(1) When specimens were of one-phase at the solution temperature, the retardation of aging was not observed at low temperatures. However, the retardation was clearly seen in two-phase specimens as the Cd content increased.(2) It was found that the retardation in this alloy system was also caused by the decrease of solid solubility of Cu in the α phase at solution temperatures, as in the Al-Cu-Sn alloys.(3) The theory based on the vacancy-trapping model to explain the aging retardation was again proved to be erroneous in the present study.