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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 >Hardening mechanisms of spray formed Al-Zn-Mg-Cu alloys with scandium and other elemental additions
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Hardening mechanisms of spray formed Al-Zn-Mg-Cu alloys with scandium and other elemental additions

机译：含formed和其他元素的喷射成形Al-Zn-Mg-Cu合金的硬化机理

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摘要

The hardening mechanisms in spray formed Al-Zn-Mg-Cu alloys with additions of chromium, zinc and scandium were studied. The microstruc-ture of the spray formed alloys was analyzed by transmission electron microscopy. A range of tensile strengths were achieved, and varied based on elemental additions, and second phase particle strengthening. To explain the significantly higher strength in one alloy with scandium, theoretical results due to the yield stress of Al-Zn-Mg-Cu alloys as a function of volume fraction and precipitate particle size, were compared to experimental data. Both the possibilities of coherency and order strengthening are examined. The significant additional hardening achieved in the alloy with scandium is attributed to small ordered particles of Al_3Sc, which precipitated during aging.
机译：研究了添加铬，锌和scan的喷射成形Al-Zn-Mg-Cu合金的硬化机理。通过透射电子显微镜分析了喷射形成的合金的显微组织。达到了一系列的抗张强度，并根据元素的添加和第二相颗粒的增强而变化。为了解释一种含with合金的明显更高的强度，将与Al-Zn-Mg-Cu合金的屈服应力相关的理论结果与体积分数和沉淀物粒径的函数进行了比较，并将其与实验数据进行了比较。研究了连贯性和加强秩序的可能性。在含the合金中实现的显着附加硬化归因于Al_3Sc的细小有序颗粒，该颗粒在时效过程中沉淀出来。

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