波纹界面钛/钢复合板热轧制备与界面组织性能研究

刘锦华; 刘鹏; 栾欠欠; 陈泽军; 夏祥生; 陈强

doi:10.3969/j.issn.1674-6457.2025.07.004

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精密成形工程 ›› 2025, Vol. 17 ›› Issue (7) : 31-40. DOI: 10.3969/j.issn.1674-6457.2025.07.004

复合材料轧制工艺与装备

波纹界面钛/钢复合板热轧制备与界面组织性能研究

刘锦华¹, 刘鹏², 栾欠欠¹, 陈泽军^1,*, 夏祥生², 陈强²

作者信息 +

Hot Roll Bonding Fabrication and Interfacial Microstructure and Properties of Titanium/Steel Clad Plates with Corrugated Interface

LIU Jinhua¹, LIU Peng², LUAN Qianqian¹, CHEN Zejun^1,*, XIA Xiangsheng², CHEN Qiang²

Author information +

文章历史 +

摘要

目的研究波-平轧制压下率对高强钛/钢复合板界面形貌、微观组织及界面结合强度的影响规律。方法采用波-平轧制工艺制备不同压下率波纹界面钛/钢复合板,借助SEM、EBSD技术分析钛/钢复合板界面微观组织特征,通过压缩剪切方式测试钛/钢复合板的剪切强度。结果通过波-平轧制工艺制备的高强钛/钢复合板界面结合良好,Ti-Fe界面处存在元素扩散现象,并形成一定厚度的扩散层。波纹界面典型区域微观组织分析结果表明,波谷承受了更大程度的变形。不同压下率下钛钢两侧界面处微观组织分析结果表明,在TC4钛合金中,α相经过热轧后形成了不同的择优取向分布,具有明显的织构特征,随着压下率的增加,极密度和位错密度逐渐升高;而钢侧极密度和位错密度则逐渐降低。压缩剪切实验结果表明,轧制压下率为44%、54%和64%的钛/钢复合板的剪切强度分别为359、403、442 MPa。结论波-平轧制压下率的提高可以使界面产生更强烈的塑性变形进而提高了钛/钢复合板的界面结合质量。

Abstract

The work aims to investigate the effect of corrugated-flat rolling reduction ratio on the interfacial morphology, microstructure, and bonding strength of high-strength titanium/steel clad plates. Titanium/steel clad plates with corrugated interfaces were fabricated through corrugated-flat rolling process under varying reduction ratios. The interfacial microstructure was characterized with Scanning Electron Microscopy (SEM) and Electron Backscatter Diffraction (EBSD), and the interfacial shear strength was evaluated through compression-shear testing. The titanium/steel clad plates prepared by corrugated-flat rolling exhibited good interfacial bonding. Elemental diffusion occurred at the Ti-Fe interface, forming a diffusion layer of measurable thickness. Microstructural analysis of typical regions of the corrugated interface indicated that the wave valleys underwent more severe plastic deformation. On both sides of the interface, EBSD analysis revealed that the α phase in TC4 titanium alloy developed different preferred orientation distributions after hot rolling, exhibiting a clear texture. With the increasing reduction ratio, the pole density and dislocation density in the titanium side gradually increased, while those in the steel side gradually decreased. Compression-shear tests showed that the shear strength of titanium/steel clad plates with reduction ratios of 44%, 54%, and 64% was 359 MPa, 403 MPa, and 442 MPa, respectively. These results indicate that increasing the reduction ratio during corrugated-flat rolling intensifies plastic deformation at the interface, thereby improving the interfacial bonding quality of the titanium/steel clad plates.

导出引用

刘锦华, 刘鹏, 栾欠欠, 陈泽军, 夏祥生, 陈强. 波纹界面钛/钢复合板热轧制备与界面组织性能研究[J]. 精密成形工程. 2025, 17(7): 31-40 https://doi.org/10.3969/j.issn.1674-6457.2025.07.004

LIU Jinhua, LIU Peng, LUAN Qianqian, CHEN Zejun, XIA Xiangsheng, CHEN Qiang. Hot Roll Bonding Fabrication and Interfacial Microstructure and Properties of Titanium/Steel Clad Plates with Corrugated Interface[J]. Journal of Netshape Forming Engineering. 2025, 17(7): 31-40 https://doi.org/10.3969/j.issn.1674-6457.2025.07.004

中图分类号： TG335.8

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