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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 >Structure and properties of dynamically compressed A199.5 and AlCuZr alloy
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Structure and properties of dynamically compressed A199.5 and AlCuZr alloy

机译：动态压缩的A199.5和AlCuZr合金的组织和性能

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摘要

The dynamically compressed AlCuZr alloy and technically pure aluminium A199.5 have been investigated. A jump of microhardness has been found in both materials deformed in the compression test, by a special hammer. In the case of AlCu4Zr alloy it appeared at the true strain of about 0.45 and in the case of A199.5 at the true strain of about 0.3. The observation performed by optical microscope revealed banded microstructure in A199.5 and AlCu4Zr from the beginning of deformation. With the increase of deformation the density of bands considerably increased. Any substantial differences between the samples before and after the jump of microhardness were not found. However, thin foil observations showed changes of microstructure above the microhardness transient. The mutually crossing microbands were found in contrast to samples below the transient of microhardness, in which only one family of microbands mostly was observed.
机译：已经研究了动态压缩的AlCuZr合金和技术纯铝A199.5。在压缩试验中变形的两种材料中，都用特殊的锤子发现了微硬度的跳跃。对于AlCu4Zr合金，它的真实应变约为0.45，而对于A199.5合金，它的真实应变约为0.3。光学显微镜观察发现，从变形开始，A199.5和AlCu4Zr的带状组织。随着变形的增加，带的密度显着增加。在显微硬度跃迁之前和之后的样品之间未发现任何实质性差异。然而，薄箔观察显示出高于显微硬度瞬态的显微组织变化。与在低于显微硬度瞬态以下的样品相反，发现了相互交叉的微带，其中仅观察到一个微带族。

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