From data-driven constitutive modeling to workability assessment: elucidating multimechanism contributions in dynamic recrystallization of HIPed Ti4522XD alloy

IF 6.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Research and Technology-Jmr&t Pub Date : 2025-09-19 DOI:10.1016/j.jmrt.2025.09.121

Meiyi Ba , Yu Sun , Lianxi Hu , Hongkui Tang , Fei Gao , Yushuang Zhang , Haoyang Wang

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引用次数: 0

Abstract

To investigate workability and microstructure evolution of hot isostatic pressed (HIPed) Ti4522XD alloy, this study employs data-driven constitutive modeling coupled with EBSD characterization, focusing on multimechanism contributions. Combining isothermal compression tests (1100–1300 °C, 0.001–1 s⁻¹, 0–0.7 true strain) with machine learning (ML) algorithms, the constitutive framework is established. The Physics-Informed model, incorporating physics-inspired (PI) input features, physics-constrained (PC) loss functions and posterior validation (PV) modules with embedded material parameters, and optimized by adaptive inertia weight together with the trainlm algorithm, achieves superior prediction accuracy (correlation coefficient (R) = 0.9932), outperforming Arrhenius model by 84.59 % and 91.26 % in average absolute relative error (AARE) and root mean square error (RMSE). The optimized processing windows were identified: 1100–1200 °C/0.001–0.0041 s⁻¹ (strain 0.1–0.4) and 1120–1220 °C/0.011–0.014 s⁻¹ (strain 0.4–0.7). The twin-induced dynamic recrystallization (TDRX) is initiated at 60°<111> pseudo twins (PT) and 70°<110> true twins (TT) due to dislocation pile-ups, where the accumulation of stacking faults (SFs) on twin boundaries (TBs) facilitates their transformation into 9 R-type LPSO structures. However, DRX-induced grain refinement raises the critical resolved shear stress CRSS for twin nucleation, suppressing further twin development. Meanwhile, particle-stimulated nucleation (PSN) occurs in particle deformation zones (PDZs) around TiB, driving lattice rotation and recrystallization. In summary, DRX proceeds via multiple mechanisms—DDRX, CDRX, TDRX, and PSN-DRX, with DDRX dominating (>70 %) and strongly enhanced by higher temperatures, larger strains, and lower strain rates, while CDRX and TDRX contribute modestly (10–15 %) and PSN-DRX remains minor (<5 %). These results highlight that DDRX prevails, while the others provide secondary contributions.

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从数据驱动的本构建模到可加工性评估：阐明HIPed Ti4522XD合金动态再结晶的多机制贡献

为了研究热等静压（HIPed） Ti4522XD合金的可加工性和微观组织演变，本研究采用数据驱动的本构建模和EBSD表征相结合的方法，重点研究了多机制的贡献。结合等温压缩试验（1100-1300°C, 0.001-1 s−1,0-0.7真应变）和机器学习（ML）算法，建立了本构框架。该模型结合了物理启发（PI）输入特征、物理约束（PC）损失函数和嵌入材料参数的后验验证（PV）模块，通过自适应惯性权重和trainlm算法进行优化，获得了较好的预测精度（相关系数(R) = 0.9932），平均绝对相对误差（AARE）和平均方根误差（RMSE）分别优于Arrhenius模型84.59%和91.26%。优化的处理窗口分别为1100 ~ 1200℃/0.001 ~ 0.0041 s−1（菌株0.1 ~ 0.4）和1120 ~ 1220℃/0.011 ~ 0.014 s−1（菌株0.4 ~ 0.7）。由于位错堆积，在60°<；111°& gt；伪孪晶（PT）和70°<；110>；真孪晶（TT）处开始孪晶诱导动态再结晶（TDRX），孪晶界（TBs）上堆积断层（SFs）的积累促使其转变为9个r型LPSO结构。然而，drx诱导的晶粒细化提高了孪晶核的临界剪切应力CRSS，抑制了孪晶核的进一步发展。同时，TiB周围的粒子变形区（PDZs）发生了粒子激发形核（PSN），驱动晶格旋转和再结晶。综上所述，DRX通过多种机制- DDRX、CDRX、TDRX和PSN-DRX进行，其中DDRX占主导地位（> 70%），高温、大应变和低应变率对其有强烈促进作用，而CDRX和TDRX的作用较小（10 - 15%），PSN-DRX的作用较小（< 5%）。这些结果突出表明，DDRX占主导地位，而其他因素则起次要作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Materials Research and Technology-Jmr&t Materials Science-Metals and Alloys

CiteScore

8.80

自引率

9.40%

发文量

1877

审稿时长

35 days

期刊介绍： The Journal of Materials Research and Technology is a publication of ABM - Brazilian Metallurgical, Materials and Mining Association - and publishes four issues per year also with a free version online (www.jmrt.com.br). The journal provides an international medium for the publication of theoretical and experimental studies related to Metallurgy, Materials and Minerals research and technology. Appropriate submissions to the Journal of Materials Research and Technology should include scientific and/or engineering factors which affect processes and products in the Metallurgy, Materials and Mining areas.