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首页> 外文会议>TMS annual meeting exhibition >Analysis of β' Cu_4Ti Precipitation in Cu-Ti Alloys by Conventional and Diffusion-Couple Methods
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Analysis of β' Cu_4Ti Precipitation in Cu-Ti Alloys by Conventional and Diffusion-Couple Methods

机译：常规和扩散耦合法分析Cu-Ti合金中的β'Cu_4Ti析出

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An analysis of the Cu_4Ti precipitation process was carried out in binary Cu-Ti alloys using the conventional method and subsequently employing a diffusion-couple based method, known as the Macroscopic-Gradient Method. The phase separation took place via the mechanism of spinodal decomposition at early stages of aging. The precipitation of the β' (Cu_4Ti) phase preceded to that of the β (Cu_3Ti) phase, which is formed by cellular precipitation. The highest hardness and fastest precipitation kinetics occurred at aging of 400 and 600 °C, respectively. In the case of the macroscopic gradient method, a diffusion couple of Cu-4 wt. Ti alloys and pure copper was prepared by a diffusion annealing. This analysis enabled to determine the equilibrium and coherent lines in this alloy system. The Gibbs-Thomson equation was verified for this type of precipitation.
机译：使用常规方法对二元Cu-Ti合金中的Cu_4Ti沉淀过程进行了分析，随后采用了基于扩散耦合的方法，即所谓的宏观梯度法。在老化的早期阶段通过旋节线分解机制进行了相分离。 β'（Cu_4Ti）相的沉淀先于通过细胞沉淀形成的β（Cu_3Ti）相的沉淀。最高的硬度和最快的沉淀动力学分别发生在400和600°C的时效下。在宏观梯度法的情况下，Cu-4 wt。通过扩散退火制备钛合金和纯铜。该分析能够确定该合金系统中的平衡线和相干线。 Gibbs-Thomson方程已针对这种类型的降水进行了验证。

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