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首页> 外文期刊>Проблемы прочностиПроблемы прочности: на рус．укр．и анг．языках >Constitutive Equations and Processing Maps for 49MnVS3 Non-Quenched and Tempered Steel
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Constitutive Equations and Processing Maps for 49MnVS3 Non-Quenched and Tempered Steel

机译：49MnVS3非调质钢的本构方程和加工图

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摘要

Flow stress variations of 49MnVS3 non-quenched and tempered steel are studied in isothermal compression tests on a Gleeble-1500D thermal simulated test machine at a deformation temperatures of 950, 1000, 1150, and 1200℃, and strain rates of 0.1, 1, 5, and 10 s~(-1), with obtaining the strain hardening exponent n and deformation activation energy Q of the alloy. Thus, the constitutive equations and processing maps of compression flow behavior for 49MnVS3 non-quenched and tempered steel at high temperatures are established. It shows that the peak stress is shown to significantly reduced with a decrease in the strain rate and increase in deformation temperature when the alloy deforms at high temperature, and the deformation activation energy is 350.98 kJ/mol. When the true strain of 49MnVS3 non-quenched and microalloyed steel high-temperature deformation is 0.5, the optimum process parameters of the alloy are determined to be 1150-1200℃ for the deformation temperature and 2-10 s~(-1) for the strain rate, based on the criterion that the process parameters of higher power dissipation efficiency values should be chosen in the dynamic recrystallization region as the best processing technology.
机译：在Gleeble-1500D热模拟试验机的等温压缩试验中，研究了49MnVS3非调质钢的流动应力变化，其变形温度为950、1000、1150和1200℃，应变速率为0.1、1、5和10 s〜（-1），获得合金的应变硬化指数n和形变活化能Q。因此，建立了49MnVS3非调质钢在高温下的压缩流动行为的本构方程和处理图。结果表明，当合金在高温下变形时，峰值应力随着应变率的降低和变形温度的升高而显着降低，变形激活能为350.98 kJ / mol。当49MnVS3非调质和微合金钢高温变形的真实应变为0.5时，合金的最佳工艺参数确定为变形温度为1150-1200℃，变形温度为2-10 s〜（-1）。应变速率，是基于在动态重结晶区域中应选择较高功耗效率值的工艺参数作为最佳处理技术的准则。

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