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首页> 外文期刊>Journal of Materials Engineering and Performance >Using differential scanning calorimetry to characterize the precipitation hardening phenomena in a Cu-9Ni-6Sn alloy
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Using differential scanning calorimetry to characterize the precipitation hardening phenomena in a Cu-9Ni-6Sn alloy

机译：使用差示扫描量热法表征Cu-9Ni-6Sn合金中的沉淀硬化现象

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摘要

An attempt has been made to characterize the transformations in a Cu-9Ni-6Sn alloy using heat flux differential scanning calorimetry (DSC) assisted by hardness measurements. Both solution heat treatment and precipitation transformations have been studied. Different starting conditions were imposed on the material to allow a clearer understanding of the transformations involved. The precipitation from the supersaturated solid solution happens in two temperature ranges, i.e., from 200 to 400 °C and from 440 to 600 °C. In the temperature range from 400 to 440 °C, the alloy does not usually transform. Thermal cycles leading to aging and overaging were determined. The precipitation hardening conditions at 350 °C or lower for less than 600 min, or 375 °C for up to 120 min, lead to metastable precipitation. Precipitation hardening for 120 min at 400 °C or 1200 min at 350 °C results in stable precipitation and is responsible for overaging the alloy.
机译：尝试通过热通量差示扫描量热法（DSC）辅助硬度测量来表征Cu-9Ni-6Sn合金中的相变。已经研究了固溶热处理和沉淀转变。对材料施加了不同的起始条件，以使您更清楚地了解所涉及的转换。来自过饱和固溶体的沉淀发生在两个温度范围内，即200至400℃和440至600℃。在400至440°C的温度范围内，合金通常不会变形。确定了导致老化和过度老化的热循环。在350°C或更低的温度下少于600分钟或在375°C的情况下长达120分钟的沉淀硬化条件会导致亚稳态沉淀。在400°C下120分钟沉淀硬化，或在350°C下1200分钟沉淀硬化会导致稳定的沉淀，并导致合金过时效。

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