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Journal of Materials Engineering and Performance

Published in:

01-04-2015

Development of the Dynamic Globularization Prediction Model for Ti-17 Titanium Alloy Using Finite Element Method

Authors: Zhiqiang Jia, Weidong Zeng, Jianwei Xu, Jianhua Zhou, Xiaoying Wang

Published in: Journal of Materials Engineering and Performance | Issue 4/2015

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Abstract

In this work, a finite element method (FEM) model for predicting dynamic globularization of Ti-17 titanium alloy is established. For obtaining the microstructure evolution during dynamic globularization under varying processing parameters, isothermal hot compression tests and quantitative metallographic analysis were conducted on Ti-17 titanium alloy with initial lamellar microstructure. The prediction model, which quantitatively described the non-linear relationship between the dynamic globularization fraction and the deformation strain, temperature, and strain rate, was developed on the basis of the Avrami equation. Then the developed model was incorporated into DEFORM software as a user subroutine. Finally, the large-sized step-shaped workpiece was isothermally forged and corresponding FEM simulation was conducted to verify the reliability and accuracy of the integrated FEM model. The reasonable coincidence of the predicted results with experimental ones indicated that the established FEM model provides an easy and a practical method to predict dynamic globularization for Ti-17 titanium alloy with complex shape.

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Title: Development of the Dynamic Globularization Prediction Model for Ti-17 Titanium Alloy Using Finite Element Method
Authors: Zhiqiang Jia
Weidong Zeng
Jianwei Xu
Jianhua Zhou
Xiaoying Wang
Publication date: 01-04-2015
Publisher: Springer US
Published in: Journal of Materials Engineering and Performance / Issue 4/2015
Print ISSN: 1059-9495
Electronic ISSN: 1544-1024
DOI: https://doi.org/10.1007/s11665-015-1438-9

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