风力涡轮机滑轮轴用 40CrNiMo 钢的热变形行为和数值模拟

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-08-29 DOI:10.1002/srin.202400134

Hongyu Wei, Wensheng Liu, Ke Zhang, Wei Wei, Qun Wu, Mingya Zhang, Xiaoping Tao, Hongyan Liu

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引用次数: 0

摘要

Gleeble-3800 热机械模拟器研究了风力涡轮机滑轮轴用 40CrNiMo 钢的热变形行为（T = 800-1100 °C, = 0.01-10 s-1）。根据摩擦和温度修正曲线建立了构成方程和热加工图。结合微观结构分析确定了最可用的热加工参数。利用 Deform-3D 软件模拟了不同变形条件下的温度场和有效应变场。结果表明，摩擦对流动曲线的影响大于温升的影响，根据理论计算得出的 40CrNiMo 钢的热变形活化能 Q 为 368.292 kJ mol-1。基于应变补偿的构效模型具有较高的精度，平均相对误差为 6.65%，相关系数为 0.987。最佳热加工区间为变形温度 950-1050 ℃、应变速率 0.03-0.25 s-1，该区间具有较高的功率耗散值，避免了不稳定区域。此外，数值模拟结果表明，在此变形范围内温度场分布均匀，有效应变的标准偏差较低，适合热加工。

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Hot Deformation Behavior and Numerical Simulation of 40CrNiMo Steel for Wind Turbine Pulley Shafts

The hot deformation behavior (T = 800–1100 °C, = 0.01–10 s−1) of 40CrNiMo steel for wind turbine pulley shafts was studied by Gleeble‐3800 thermomechanical simulator. A constitutive equation and hot processing map are established based on the friction and temperature correction curves. The most available hot processing parameters are determined by combining microstructure analysis. The temperature fields and effective strain fields under different deformation conditions are simulated by Deform‐3D software. The results indicate that the effect of friction on the flow curves is greater than that of temperature rise, the activation energy Q of hot deformation for 40CrNiMo steel calculated based on the theoretical calculation is 368.292 kJ mol−1. The constitutive model based on strain compensation has high accuracy, with an average relative error of 6.65% and a correlation coefficient of 0.987. The optimum hot processing interval is at a deformation temperature of 950–1050 °C and a strain rate of 0.03–0.25 s−1, which has a high‐power dissipation value and avoids the instability region. Additionally, numerical simulation results show that the temperature field distribution is uniform in this deformation range, and the standard deviation of the effective strain is low, making it suitable for hot processing.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.