Yang Jian, Zeng Yangbiao, Chen Yuhang, Huang Lirong, Liu Wen, Wang Chaoyang, Qin Xiao
Guangdong Chengtai Automation Technology Co., Ltd., Huizhou 516000, China.
School of Mechanical and Electrical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China.
Materials (Basel). 2025 Jun 17;18(12):2872. doi: 10.3390/ma18122872.
To achieve high-performance forgings of the C83600 tin bronze valve body with a uniform structure that is free from forging defects, rheological data were collected via hot compression experiments. Subsequently, an Arrhenius constitutive model incorporating strain compensation was established. The correlation coefficient, root mean square error, and mean relative error between the predicted values of the model and the experimental results were 0.99326, 5.1898, and 4.022%, respectively, which validated the model's capability to accurately describe the rheological behavior of C83600. Using this model, the rheological data were incorporated into the Deform material library to enhance its database. A thermal processing map for C83600 under various deformation conditions was then developed. This map indicates that the material demonstrates excellent thermal working stability when the deformation temperature ranges from 850 to 900 K and the strain rate varies between 0.0067 and 0.0483 s. Furthermore, numerical simulations were conducted to analyze the forging process, focusing on regions of stress concentration where the average strain rate aligns with the optimal parameters derived from the thermal processing map. This alignment not only verifies the reliability of the hot working map but also confirms the feasibility of the forging process through trial production.
为了获得具有均匀组织结构且无锻造缺陷的C83600锡青铜阀体高性能锻件，通过热压缩实验收集了流变数据。随后，建立了一个包含应变补偿的阿累尼乌斯本构模型。该模型预测值与实验结果之间的相关系数、均方根误差和平均相对误差分别为0.99326、5.1898和4.022%，这验证了该模型准确描述C83600流变行为的能力。利用该模型，将流变数据纳入Deform材料库以增强其数据库。然后绘制了C83600在各种变形条件下的热加工图。该图表明，当变形温度在850至900 K范围内且应变速率在0.0067至0.0483 s之间变化时，该材料表现出优异的热加工稳定性。此外，进行了数值模拟以分析锻造过程，重点关注应力集中区域，其中平均应变速率与从热加工图得出的最佳参数一致。这种一致性不仅验证了热加工图的可靠性，还通过试生产证实了锻造工艺的可行性。
