Role of layered structure in ductility improvement of layered Ti-Al metal composite

Huang, Meng; Xu, Chao; Fan, Guohua; Maawad, Emad; Gan, Weimin; Li, Geng; Lin, Fengxiang; Tang, Guangze; Wu, Hao; Du, Yan; Li, Danyang; Miao, Kesong; Zhang, Tongtong; Yang, Xuesong; Xia, Yingjie; Cao, Guojian; Kang, Huijun; Wang, Tongmin; Xiao, Tiqiao; Xie, Honglan

doi:10.1016/j.actamat.2018.05.005

Cited by 293 publications

(64 citation statements)

References 63 publications

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“…The yield strengths of Al/Ti/Al LMCs approximately follow the law of mixtures assuming that the strengths of the Al and Ti layers are equal to those of the single Al and single Ti sheets. However, the elongation does not obey the law of mixtures because the elongations of the Al/Ti/Al LMCs with the straight interface are clearly higher than those of single Ti and single Al, as indicated in Figure b,c, which may be attributed to the enhanced work‐hardening capability of the LMCs caused by the laminate structure …”

Section: Resultsmentioning

confidence: 97%

Effect of Wavy Profile on the Fabrication and Mechanical Properties of Al/Ti/Al Composites Prepared by Rolling Bonding: Experiments and Finite Element Simulations

Chen

et al. 2019

Adv Eng Mater

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The bonding interface plays an important role in the mechanical properties of laminated metal composites (LMCs). Compared with a straight interface, larger bonding area is achieved by a wavy interface, which provides higher debonding resistance for a given bonding strength. Herein, Al/Ti/Al LMCs with straight and wavy bonding interfaces are fabricated using Ti strips with initial straight and wavy profiles. The mechanical properties are investigated with in-plane uniaxial tension tests. Microstructures in the region of the interface before and after tension are characterized by scanning electron microscopy and electron backscatter diffraction. Finite element simulations of the rolling-bonding process and tension are conducted to investigate the effect of the wavy profile on the fabrication and mechanical properties of Al/Ti/Al LMCs. Compared with an initial straight profile, Al and wavy Ti strips are successfully bonded at a lower rolling reduction because of the larger local strain and higher local contact stress. Wavy interfaces between the Al and Ti layers are formed. Similar strength and ductility are obtained for Al/Ti/Al LMCs with straight and wavy interfaces when a proper rolling reduction and annealing are applied.

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Section: Resultsmentioning

confidence: 97%

Effect of Wavy Profile on the Fabrication and Mechanical Properties of Al/Ti/Al Composites Prepared by Rolling Bonding: Experiments and Finite Element Simulations

Chen

et al. 2019

Adv Eng Mater

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“…Huang et al 33 suggested that the high ductility of Ti-Al composites benefited from strong bonded interface, which not only reduced the strain localization of Ti layer, but also effectively relieved the stress concentration of Al layer. However, Launey et al 34 stated that delamination occurred easily at weak bonded interface, which could effectively restrict the crack propagation via crack deflection and blunting, thus toughening was achieved.…”

Section: Bonding Strengthmentioning

confidence: 99%

Effect of Interface on Mechanical Properties of Ti/Al/Mg/Al/Ti Laminated Composites

et al. 2020

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Ti/Al/Mg/Al/Ti laminated composites were fabricated via hot-pressing at 350 °C, 400 °C and 450 °C successfully. The influences of interface morphology, diffusion zone, constraint effect on the mechanical properties were investigated. At Ti/Al interface, intermetallic compounds aren't found. Whereas, they form at Al/Mg interface. With the increasing temperature, the bonding strength of Al/Mg interface doesn't change linearly, and the maximum strength is obtained at 400 °C because of intermetallic compounds with appropriate thickness. With the increase of temperature, the hardness at both Ti/Al and Al/Mg interfaces increases owing to the solid solution and the intermetallic phases. Also, the ultimate tensile strength of LMCs increases with sacrificing the fracture elongation. The rule of mixture is used to predict the theoretical strength. It is found that the theoretical values are less than the measured, and the reasons may relate to interfaces in Ti/Al/Mg/Al/Ti laminated composites.

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“…Once the constraint effect of layered structure is locally weakened due to the delamination of Ti/Al interface, rapid necking of the LMC occurs, which leads to the sudden local fracture. To reveal the fracture behavior of LMC, SR-µCT experiment was carried out during the in-situ tensile test [38]. Figure 7 shows the 3D renderings of the cracks in the LMC when tensioned to macro strains of 0%, 3%, 5%, 10% and 20%, which clearly reveals the nucleation and accumulation of the cracks in the LMC during the tensile deformation.…”

Section: Layered Ti/al Metal Compositesmentioning

confidence: 99%

“…3D rendering of LMC based on the in-situ µCT[38]: (a-e) distribution of cracks in the LMC tensile sample at various macro strains; (f) 2D projections of TD-ND plane of the sample tensioned to 10.0% and 20.0%; and (g) magnified morphology of the local fracture in the Ti layer of LMC in white dotted-line box in (e).…”

mentioning

confidence: 99%

3D Visualized Characterization of Fracture Behavior of Structural Metals Using Synchrotron Radiation Computed Microtomography

Huang

et al. 2019

QuBS

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Synchrotron radiation computed micro-tomography (SR-μCT) is a non-destructive characterization method in materials science, which provides the quantitative reconstruction of a three-dimension (3D) volume image with spatial resolution of sub-micrometer level. The recent progress in brilliance and flux of synchrotron radiation source has enabled the fast investigation of the inner microstructure of metal matrix composites without complex sample preparation. The 3D reconstruction can quantitatively describe the phase distribution as well as voids/cracks formation and propagation in structural metals, which provides a powerful tool to investigate the deformation and fracture processes. Here, we present an overview of recent work using SR-μCT, on the applications in structural metals.

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Role of layered structure in ductility improvement of layered Ti-Al metal composite

Cited by 293 publications

References 63 publications

Effect of Wavy Profile on the Fabrication and Mechanical Properties of Al/Ti/Al Composites Prepared by Rolling Bonding: Experiments and Finite Element Simulations

Effect of Wavy Profile on the Fabrication and Mechanical Properties of Al/Ti/Al Composites Prepared by Rolling Bonding: Experiments and Finite Element Simulations

Effect of Interface on Mechanical Properties of Ti/Al/Mg/Al/Ti Laminated Composites

3D Visualized Characterization of Fracture Behavior of Structural Metals Using Synchrotron Radiation Computed Microtomography

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