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Structure–Phase Transformations and Properties of Non-Ferrous Metals and Alloys under Extreme Conditions
Physics of Metals and Metallography ( IF 1.2 ) Pub Date : 2020-09-01 , DOI: 10.1134/s0031918x20070029
I. G. Brodova , V. I. Zel’dovich , I. V. Khomskaya

Abstract—The review presents the original experimental data on the structure formation and properties of titanium, aluminum, copper, and their alloys upon intense deformation and shock-wave conditions. The main volume of the article is devoted to the production of the submicrocrystalline and nanocrystalline non-ferrous metals and alloys by dynamic channel-angular pressing. The optimal regimes of DCAP which make it possible to obtain high-quality bulk samples without surface defects were determined for the each material. The changes in the morphological and dimensional characteristics of the structure of different materials depending on the deformation regime were studied in detail using complex analytical methods. The mechanisms of the deformation and deformation strengthening of metals and alloys in a wide range of strain-rate deformation have been considered. New data on the thermal stability of SMC and NC materials obtained by the dynamic pressing are presented. The analysis of change in the dynamic characteristics upon shock-wave compression depending on the nature of alloys has been carried out. The relationship between the composition and structure of the SMC aluminum, copper, and their alloys obtained by DCAP with mechanical properties in a wide range of strain rates of 3 × 10–3–6 × 105 s–1 has been established. In conclusion, the principles of the creation of SMC and NC of fcc materials with different energy of stacking fault defects of aluminum, copper and their alloys and titanium by methods of severe plastic deformation (SPD) are described.



中文翻译:

极限条件下有色金属和合金的结构相变和性能

摘要—这篇综述介绍了在剧烈变形和冲击波条件下钛,铝,铜及其合金的结构形成和性能的原始实验数据。该文章的主要内容致力于通过动态通道角挤压技术生产亚微晶和纳米晶的有色金属及其合金。为每种材料确定了DCAP的最佳方案,该方案可以获取没有表面缺陷的高质量大块样品。使用复杂的分析方法,详细研究了不同材料结构的形貌和尺寸特征随变形方式的变化。已经考虑了在大的应变率变形范围内金属和合金的变形和变形加强的机理。介绍了通过动态压制获得的SMC和NC材料热稳定性的新数据。已经进行了取决于合金的性质的冲击波压缩时的动态特性变化的分析。DCAP获得的SMC铝,铜及其合金的组成与结构之间的关系具有3×10的宽应变率范围内的机械性能已建立–3 –6×10 5 s –1。总之,描述了通过剧烈塑性变形(SPD)的方法,以不同的能量堆积铝,铜及其合金和钛的堆垛层错缺陷而创建fcc材料的SMC和NC的原理。

更新日期:2020-09-01
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