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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Effect of Ni additions and hot deformation on precipitation behavior and hardness in Al-Si-Mg aged alloys
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Effect of Ni additions and hot deformation on precipitation behavior and hardness in Al-Si-Mg aged alloys

机译:Ni添加和热变形对Al-Si-Mg老化合金沉淀性能和硬度的影响

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摘要

Additions of 1-2 Ni (wt. %) and hot deformation on the microstructure and hardness of A356 aged alloy were studied. The results show that the addition of this element generates the formation of Ni31Si12 and NiFe phases with high thermal stability. In addition, the presence of Ni into the Al matrix and precipitates of the second phase affect the precipitation kinetics, transformation sequence, growth rate, and slow loss of hardness in the system after reaching the maximum values. For example, the Ni additions contribute to generating the coexistence of beta" precipitate and GP-I zones. Of all the strengthening mechanisms present, hardening by precipitation is the most influential in the hardness. (c) 2020 Elsevier B.V. All rights reserved.
机译:研究了1-2 Ni(重量%)和对A356老化合金的微观结构和硬度的热变形的添加。 结果表明,该元素的添加产生具有高热稳定性的Ni31Si12和NiFe相的形成。 另外,在达到最大值之后,将Ni的存在进入第二相的沉淀动力学,转化序列,生长速率和系统中硬度的缓慢损失。 例如,Ni添加有助于产生β“沉淀物和GP-I区的共存。在存在的所有强化机制中,通过降水硬化是最有影响力的硬度。(c)2020 Elsevier B.v.保留所有权利。

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