高密度电脉冲对冷冻金属结构和强度的影响

IF 0.4 Q4 METALLURGY & METALLURGICAL ENGINEERING
M. Markushev, E. Avtorkatova, R. Ilyuasov, I. Valeev, A. Valeeva, S. Krymskiy, O. Sitdikov
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引用次数: 0

摘要

对在液氮温度下对等温冷冻片材进行高密度电脉冲(HDEP)所导致的纯净催化裂化金属-铝、镍和铜的结构和环境温度机械行为变化进行了比较分析。讨论了 HDEP 期间控制变形结构性质和动力学转变的过程、驱动力和因素。确定了不同容量脉冲下低温滚压金属中激活恢复和再结晶的温度范围。结果表明,由于形成了具有不同晶粒大小、位错密度和晶界谱(包括超细晶粒和纳米结构)的均质和/或异质结构,加工过程可在很大范围内控制金属的强度。结论是,电脉冲下金属软化的现象和性质与传统炉退火时发生的现象和性质相似。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Effect of High-Dense Electropulsing on Structure and Strength of Cryorolled Metals

Effect of High-Dense Electropulsing on Structure and Strength of Cryorolled Metals

A comparative analysis of changes in structure and ambient temperature mechanical behavior of pure FCC metals—Al, Ni and Cu, due to high-dense electropulsing (HDEP) of isothermally cryorolled at liquid nitrogen temperature sheets, has been carried out. Processes, driving forces and factors controlling the nature and kinetics of transformation of the deformation structure during HDEP are discussed. Temperature ranges of activation of recovery and recrystallization in the cryorolled metals under pulsing of different capacity are determined. It is shown that the processing allows controlling strength of metals within a wide range owing to formation of homogeneous and/or heterogeneous structures with different crystallite size, dislocation density and grain boundary spectrum, involving ultra-fine grained and nanostructured ones. It is concluded that the phenomenology and nature of metal softening under electric pulsing are similar to those, occurred at conventional furnace annealing.

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来源期刊
Russian Metallurgy (Metally)
Russian Metallurgy (Metally) METALLURGY & METALLURGICAL ENGINEERING-
CiteScore
0.70
自引率
25.00%
发文量
140
期刊介绍: Russian Metallurgy (Metally)  publishes results of original experimental and theoretical research in the form of reviews and regular articles devoted to topical problems of metallurgy, physical metallurgy, and treatment of ferrous, nonferrous, rare, and other metals and alloys, intermetallic compounds, and metallic composite materials. The journal focuses on physicochemical properties of metallurgical materials (ores, slags, matters, and melts of metals and alloys); physicochemical processes (thermodynamics and kinetics of pyrometallurgical, hydrometallurgical, electrochemical, and other processes); theoretical metallurgy; metal forming; thermoplastic and thermochemical treatment; computation and experimental determination of phase diagrams and thermokinetic diagrams; mechanisms and kinetics of phase transitions in metallic materials; relations between the chemical composition, phase and structural states of materials and their physicochemical and service properties; interaction between metallic materials and external media; and effects of radiation on these materials.
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