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首页> 外文会议>International Conference on Aluminum Alloys >NANOCLUSTER FORMATION BEHAVIOR IN Al-Zn-Mg ALLOYS WITH MICROALLOYING ELEMENTS AND IMPROVED MECHANICAL PROPERTIES
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NANOCLUSTER FORMATION BEHAVIOR IN Al-Zn-Mg ALLOYS WITH MICROALLOYING ELEMENTS AND IMPROVED MECHANICAL PROPERTIES

机译：具有微合金元素的Al-Zn-Mg合金中的纳米簇形成行为和改进的机械性能

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The formation behavior of nanoclusters and precipitates in Al-Zn-Mg alloys containing microalloying elements was investigated using TEM and 3DAP techniques. The grain size of the alloys was controlled to investigate its influence on the nanocluster formation. In the Al-Zn-Mg alloys, small amount of Mn is effective to refine grains. The age-hardening behavior and precipitate microstructures in the alloys with refined grains were complicated. In the grain refined alloy the age-hardening is markedly decreased and precipitation is greatly suppressed. It is found that the microalloying elements of Ag and Sn are effective to increase age-hardening and to produce refined precipitates in the refined grain alloy. The behavior is similar to the phenomenon of the reduced width of PFZs. The important feature of microalloying elements is the interactions with vacancies and solute atoms. The alloys with refined grains and reduced PFZs exhibit high strength and high ductility.
机译：使用TEM和3DAP技术研究了含有微合金元素的Al-Zn-Mg合金中纳米能器和沉淀物的形成行为。控制合金的晶粒尺寸以研究其对纳米簇形成的影响。在Al-Zn-Mg合金中，少量Mn可有效细化晶粒。用精制晶粒的合金中的硬化行为和沉淀微观结构复杂。在晶粒精制合金中，抑制年龄硬化并大大抑制了沉淀。结果发现，Ag和Sn的微合金元素是有效地增加年龄硬化，并在精制的籽粒合金中产生精制沉淀物。该行为类似于PFZ的降低宽度的现象。微合金元素的重要特征是与空位和溶质原子的相互作用。具有精制晶粒和降低的PFZ的合金表现出高强度和高延展性。

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