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

LIU Jinhua, LIU Peng, LUAN Qianqian, CHEN Zejun, XIA Xiangsheng, CHEN Qiang

Journal of Netshape Forming Engineering ›› 2025, Vol. 17 ›› Issue (7) : 31-40.

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Journal of Netshape Forming Engineering ›› 2025, Vol. 17 ›› Issue (7) : 31-40. DOI: 10.3969/j.issn.1674-6457.2025.07.004
Composite Material Rolling Technology and Equipment

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

  • LIU Jinhua1, LIU Peng2, LUAN Qianqian1, CHEN Zejun1,*, XIA Xiangsheng2, CHEN Qiang2
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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.

Key words

titanium/steel clad plate / corrugated interface / roll bonding / microstructure / mechanical property

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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

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Funding

; Fund:The Foundation Strengthening Project (2022-JCJQ-ZD-177-11)
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