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首页> 外文期刊>Materials Science and Engineering >Annealing effects on the microstructure and properties of an Fe-based Metallic-Intermetallic Laminate (MIL) composite
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Annealing effects on the microstructure and properties of an Fe-based Metallic-Intermetallic Laminate (MIL) composite

机译：退火对铁基金属间金属层压板（MIL）复合材料的组织和性能的影响

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摘要

430SS MIL composites were initially fabricated under semi-solid reaction at 655 ℃ and then annealed at high temperature (1000 ℃) to obtain the ductile Fe-rich intermetaliic phases. The microstructure evolution and micro-hardness distribution across the intermetallic/metal interfaces were investigated, as well as the experimentally and computationally evaluating the growth kinetics of the Fe-rich inter-metallic layers. A multilayer structure (namely Al-rich layer, Fe-rich layer and B2 phase layer) with a complex mix of intermetaliic phases (FeAl_2, Cr_5Al_8 and FeAl) form in the high temperature annealed 430SS MIL composites. The FeAl phase with a B2 structure formed in the intermetaliic layer provides a more gradual transition of mechanical properties across the intermetallic/metal layer. The growth mechanism of the Fe-rich layer is interface controlled, while the growth of the B2 phase layer is diffusion controlled based on both the experimental and numerical analysis. A relationship between the proces-sing-microstructure-properties of the MIL composites has been established and applied to predict and tailor the microhardness distribution across the multi-layered structure of the 430SS MIL composites.
机译：首先在655℃下半固态反应制备430SS MIL复合材料，然后在高温（1000℃）下退火，以获得富韧性的富铁金属间相。研究了金属间/金属界面上的微观组织演变和显微硬度分布，以及实验和计算评估富铁金属间层的生长动力学。在高温退火的430SS MIL复合材料中形成具有金属间相（FeAl_2，Cr_5Al_8和FeAl）复杂混合的多层结构（即富铝层，富铁层和B2相层）。在金属间层中形成的具有B 2结构的FeAl相在整个金属间/金属层上提供了更逐渐的机械性能过渡。基于实验和数值分析，富Fe层的生长机理受界面控制，而B2相层的生长受扩散控制。已经建立了MIL复合材料的加工微观结构性能之间的关系，并将其用于预测和调整430SS MIL复合材料多层结构的显微硬度分布。

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