Influence of Strain Rate on Heat Release under Quasi-Static Stretching of Metals. Experiment

被引：3
|
作者：
Zimin, B. A. [1 ]
Sventitskaya, V. E. [1 ]
Smirnov, I. V. [1 ]
Sud'enkov, Yu. V. [1 ]
机构：
[1] St Petersburg State Univ, St Petersburg 199034, Russia
来源：
PHYSICS OF THE SOLID STATE | 2018年 / 60卷 / 04期
基金：
俄罗斯基础研究基金会; 俄罗斯科学基金会;
关键词：
ENERGY;
D O I：
10.1134/S1063783418040352
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The paper presents the results of experimental studies of energy dissipation during a quasi-static stretching of metals and alloys at room temperature. The strain rates varied in the range of 10(-3)-10(-2) s(-1). Samples of M1 copper, AZ31B magnesium alloy, BT6 titanium, 12Cr18Ni10Ti steel, and D16AM aluminum alloy were analyzed. The experimental results demonstrated a significant dependence of the heat release on the strain rate in the absence of its influence on stress-strain diagrams for all the metals studied in this range of strain rates. The correlation of the changes in the character of heat release with the processes of structural transformations at various stages of plastic flow is shown on the qualitative level. A difference in the nature of the processes of heat release in materials with different ratios of the plasticity and strength is noted.
引用
收藏
页码：758 / 763
页数：6
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