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Ductility Sensitivity to Stacking Fault Energy and Grain Size in Cu–Al Alloys

机译:Cu-Al合金对堆垛层错能和晶粒尺寸的延性敏感性

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Tensile strength of Cu–Al alloy is prominently enhanced by decreasing the stacking fault energy (SFE). In contrast, the uniform elongation (UE) depends strongly on the SFE and grain size. With decreasing the SFE, the UE of the Cu–Al alloy becomes increasingly sensitive to the grain size. In the coarse-grained regime, the UE is monotonically enhanced with decreasing the SFE, but in the fine-grained regime, the Cu–Al alloy with the medium SFE displays the highest UE. Strain-hardening behavior is investigated to clarify the ductility sensitivity to the SFE and grain size in the Cu–Al alloys.
机译:通过降低堆垛层错能(SFE),可显着提高Cu-Al合金的拉伸强度。相反,均匀伸长率(UE)很大程度上取决于SFE和晶粒尺寸。随着SFE的降低,Cu-Al合金的UE对晶粒尺寸变得越来越敏感。在粗粒度状态下,UE随SFE的降低而单调增强,但在细粒度状态下,具有中等SFE的Cu-Al合金显示出最高的UE。对应变硬化行为进行了研究,以阐明对Cu-Al合金的SFE和晶粒尺寸的塑性敏感性。

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