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应变补偿模型和加工图在描述亚稳β钛合金热变形行为中的应用

Application of the Strain Compensation Model and Processing Maps for Description of Hot Deformation Behavior of Metastable β Titanium Alloy.

作者信息

Lypchanskyi Oleksandr, Śleboda Tomasz, Łukaszek-Sołek Aneta, Zyguła Krystian, Wojtaszek Marek

机构信息

Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Av. Mickiewicza 30, 30-059 Krakow, Poland.

出版信息

Materials (Basel). 2021 Apr 17;14(8):2021. doi: 10.3390/ma14082021.

DOI:10.3390/ma14082021
PMID:33920581
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8073255/
Abstract

The flow behavior of metastable β titanium alloy was investigated basing on isothermal hot compression tests performed on Gleeble 3800 thermomechanical simulator at near and above β transus temperatures. The flow stress curves were obtained for deformation temperature range of 800-1100 °C and strain rate range of 0.01-100 s. The strain compensated constitutive model was developed using the Arrhenius-type equation. The high correlation coefficient (R) as well as low average absolute relative error (AARE) between the experimental and the calculated data confirmed a high accuracy of the developed model. The dynamic material modeling in combination with the Prasad stability criterion made it possible to generate processing maps for the investigated processing temperature, strain and strain rate ranges. The high material flow stability under investigated deformation conditions was revealed. The microstructural analysis provided additional information regarding the flow behavior and predominant deformation mechanism. It was found that dynamic recovery (DRV) was the main mechanism operating during the deformation of the investigated β titanium alloy.

摘要

基于在Gleeble 3800热机械模拟器上于β转变温度附近及以上温度进行的等温热压缩试验，对亚稳β钛合金的流变行为进行了研究。获得了800 - 1100°C变形温度范围和0.01 - 100 s应变率范围的流变应力曲线。使用阿累尼乌斯型方程建立了应变补偿本构模型。实验数据与计算数据之间的高相关系数（R）以及低平均绝对相对误差（AARE）证实了所建立模型的高精度。结合普拉萨德稳定性判据的动态材料建模，使得能够针对所研究的加工温度、应变和应变率范围生成加工图。揭示了在所研究的变形条件下材料具有较高的流变稳定性。微观结构分析提供了关于流变行为和主要变形机制的额外信息。结果发现，动态回复（DRV）是所研究的β钛合金变形过程中的主要作用机制。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bd7d/8073255/32eeb3db730e/materials-14-02021-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bd7d/8073255/d80d369ebc35/materials-14-02021-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bd7d/8073255/a1c909e96ae0/materials-14-02021-g002a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bd7d/8073255/8dbe2480a4d8/materials-14-02021-g003a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bd7d/8073255/2ca40c2d431a/materials-14-02021-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bd7d/8073255/609e49149c9c/materials-14-02021-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bd7d/8073255/fbb901e75557/materials-14-02021-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bd7d/8073255/ea58e7c0f23b/materials-14-02021-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bd7d/8073255/10c7bc4dd25a/materials-14-02021-g008a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bd7d/8073255/6c60167fbe8a/materials-14-02021-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bd7d/8073255/32eeb3db730e/materials-14-02021-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bd7d/8073255/d80d369ebc35/materials-14-02021-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bd7d/8073255/a1c909e96ae0/materials-14-02021-g002a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bd7d/8073255/8dbe2480a4d8/materials-14-02021-g003a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bd7d/8073255/2ca40c2d431a/materials-14-02021-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bd7d/8073255/609e49149c9c/materials-14-02021-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bd7d/8073255/fbb901e75557/materials-14-02021-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bd7d/8073255/ea58e7c0f23b/materials-14-02021-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bd7d/8073255/10c7bc4dd25a/materials-14-02021-g008a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bd7d/8073255/6c60167fbe8a/materials-14-02021-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bd7d/8073255/32eeb3db730e/materials-14-02021-g010.jpg

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