The utilization of Titanium-clad steel plate (TCSP) spans various industries. Over time, there has been an increasing demand for enhanced mechanical properties, leading to the advancement of high-strength TCSP. As a result, self-produced high-strength TCSP was utilized to investigate the cooperative deformation behavior during isothermal axial thermal compression (TC) tests and to establish the constitutive equations and processing map. The results indicated that the TCSP did not deform cooperatively throughout the entire TC process. Initially, the titanium matrix deformed, and only when its strength matched that of the steel matrix did the TCSP deform cooperatively. The microstructure of the steel matrix revealed an increasing number of deformation grains, while the titanium matrix exhibited an increase in substructure grains with temperature. The primary orientation of the steel matrix was (101), while that of the titanium matrix was (01 \(\overline{1 }\) 0) after TC. Furthermore, it was observed that the titanium matrix displayed a distinctive plate texture, while the steel matrix exhibited a mixed texture that became increasingly pronounced with temperature. The constitutive equation was derived using the Arrhenius model, and the material constants were represented by a fourth-order polynomial fit to the true strain. The established constitutive equation exhibited an accuracy of 96.27%. Finally, the process map constructed using the dynamic material model revealed the presence of four distinct zones.

Graphical Abstract

中文翻译：

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高强钛复合钢板热压缩过程中的协同变形行为及组织演化

钛复合钢板（TCSP）的应用遍及各个行业。随着时间的推移，对增强机械性能的需求不断增加，导致高强度 TCSP 的发展。因此，利用自制的高强度TCSP研究了等温轴向热压缩（TC）试验中的协同变形行为，并建立了本构方程和加工图。结果表明，TCSP 在整个 TC 过程中并未协同变形。最初，钛基体发生变形，只有当其强度与钢基体的强度相匹配时，TCSP 才会协同变形。钢基体的显微组织显示变形晶粒数量不断增加，而钛基体的亚结构晶粒随着温度的升高而增加。 TC后钢基体的主取向为(101)，而钛基体的主取向为(01 \(\overline{1 }\) 0)。此外，还观察到钛基体呈现出独特的板状织构，而钢基体呈现出混合织构，并且随着温度的升高而变得越来越明显。使用阿伦尼乌斯模型导出本构方程，材料常数由与真实应变拟合的四阶多项式表示。建立的本构方程准确率为96.27%。最后，使用动态材料模型构建的流程图揭示了四个不同区域的存在。

图形概要