Transactions of Materials and Heat Treatment

Title：Research on microstructure of finite element simulation and experiment for forging blade

Authors： Li Yanqin Zhang Dehai Xie Guizhong Zhang Duanqin Guo Changjiang Liu Jianxiu

Unit： Zhengzhou University of Light Industry Guizhou University

KeyWords： blade forging microstructure grain intercept width of martensitic bundle

ClassificationCode：TP391；TG806

year,vol(issue):pagenumber：2018,43(4):9-15

Abstract：

The complete forging process of blade was tested and studied, and the process rules and heat treatment process of forging blade were further analyzed. The metallographic specimens were made from five key points selected on the blade after forging, and the finite element model of forging process for blade was established. Then, the microstructures of key points were obtained, and the grain intercept and width of martensite bundle were measured. Furthermore, the influences of different process parameters on the evolution process of grain in the forming process of blade were analyzed by establishing the model of grain intercept. The results show that the grain size of each key point is not greater than that of the No.4 grade in the ASTM A369 standard. The martensite bundle is not sensitive to the initial forging temperature. The velocity of upper mold has not obvious effect on the width of martensite bundle, but it has significant effect on the grain size. And the width of martensite bundle is much more sensitive to the strain. Thus, the maximum relative error of grain intercept predicted by the grain intercept model is 19.33% which can meet the requirement of enterprise.

Funds：

国家自然科学基金资助项目（11602229）；现代制造技术教育部重点实验室（贵州大学）开放课题（XDKFJJ［2016］07）；河南省基础与前沿技术研究计划项目（142300410399）；河南省产学研合作项目(162107000045)；郑州轻工业学院博士科研基金资助项目

李艳芹（1974-），女，学士，高级工程师；E-mail：yqli@zzuli.edu.cn

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