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首页> 外文期刊>Journal of Materials Engineering and Performance >Aging of an aluminum alloy resulting from variations in the cooling rate
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Aging of an aluminum alloy resulting from variations in the cooling rate

机译：冷却速度变化导致铝合金的时效

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摘要

The effect that the rate of cooling after solubilization exerts on the aging behavior of an aluminum heat treatable alloy was studied. Bars of the alloy were heated in a box furnace for solubilization, and after this was achieved they were cooled to room temperature by placing one end in a shallow tank of water. Thermal evolution along the bar was registered with the aid of thermocouples connected to a PC-based data logging system. Small samples were cut from the bars and aged for different times and temperatures. Results from microhardness tests indicate that peak hardness, at a given aging temperature, augments with the increase of the cooling rate until a certain value is achieved, above which the hardness remains constant. This feature was found to be due to precipitation taking place at the lower cooling rates.
机译：研究了增溶后冷却速率对铝热处理合金的时效行为的影响。将该合金棒在箱式炉中加热以使其溶解，并在达到此目的后将一端放在浅水槽中冷却至室温。借助连接到基于PC的数据记录系统的热电偶，记录了沿着钢筋的热释放。从试条上切下小样品，并老化不同的时间和温度。显微硬度测试的结果表明，在给定的时效温度下，峰值硬度会随着冷却速率的增加而增加，直到达到一定值为止，在该值之上，硬度保持恒定。发现该特征是由于在较低的冷却速率下发生沉淀。

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