22MnB5高强钢热变形行为及工艺图

IF 0.6 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materiali in tehnologije Pub Date : 2023-07-29 DOI:10.17222/mit.2023.874

H. Ji, Y. Wen, G. Cui, Weichi Pei, W. Xiao

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引用次数: 0

摘要

为了探索22MnB5的热成形性，利用Gleeble-1500热拉伸试验机对22MnB5高强度钢板进行了热拉伸试验。得到850℃~ 950℃和0.01 s-1 ~ 10 s-1时的应力-应变曲线。结果表明:22MnB5具有明显的正应变率敏感性，峰值应力随温度升高而降低;采用改进的Johnson-Cook模型建立了22MnB5的力学本构方程，并将拟合值与实验值进行了比较。基于动态材料模型，建立并分析了22MnB5的热加工图。热加工工艺确定为:变形温度880℃~ 930℃，应变速率0.01 s-1 ~ 1 s-1。

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HOT-DEFORMATION BEHAVIOR AND PROCESSING MAP OF 22MnB5 HIGH-STRENGTH STEEL

In order to explore the hot formability of 22MnB5, a hot-tensile test of 22MnB5 high-strength steel plate was carried out using a Gleeble-1500 hot-tensile-testing machine. The stress-strain curves at 850 °C to 950 °C and 0.01 s–1 to 10 s–1 were obtained. The results show that 22MnB5 has an obvious positive-strain-rate sensitivity, and its peak stress decreases with the increase of temperature. The mechanical constitutive equation of 22MnB5 was established by using the improved Johnson-Cook model, and the fitting value was compared with the experimental value. Based on the dynamic material model, the hot-processing map of 22MnB5 was established and analyzed. The hot-processing process was determined as follows: deformation temperature 880 °C to 930 °C, strain rate 0.01 s–1 to 1 s–1.

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来源期刊

Materiali in tehnologije 工程技术-材料科学：综合

CiteScore

1.30

自引率

0.00%

发文量

审稿时长

4-8 weeks

期刊介绍： The journal MATERIALI IN TEHNOLOGIJE/MATERIALS AND TECHNOLOGY is a scientific journal, devoted to original papers and review scientific papers concerned with the areas of fundamental and applied science and technology. Topics of particular interest include metallic materials, inorganic materials, polymers, vacuum technique and lately nanomaterials.