Study on the Microstructure and Mechanical Properties of a Ti/Mg Alloy Clad Plate Produced by Explosive Welding

Zhao, Hui; Zhao, Chaochao; Yang, Yang; Wang, Yizhuo; Sheng, Liyuan; Li, Yixu; Huo, Miao; Zhang, Keren; Xing, Liwei; Zhang, Ge

doi:10.3390/met12030399

Cited by 13 publications

(6 citation statements)

References 22 publications

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“…Although the PEO process is more costly in comparison to the mere chemical passivation, some PEO coated parts are used in the automotive industry for a toxic chromate replacement wherever corrosion-resistance standards are strong enough to fulfil the requirements. This includes motor sport, where it is commonly used as a magnesium coating, e.g., in Formula One [19,20]. PEO coatings significantly enhance the corrosion resistance of Mg alloys.…”

Section: Introductionmentioning

confidence: 99%

Effect of Plasma Electrolytic Oxidation on the Short-Term Corrosion Behaviour of AZ91 Magnesium Alloy in Aggressive Chloride Environment

et al. 2022

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In order to increase the corrosion resistance of magnesium alloy AZ91 in corrosion environments containing chlorides, the alloy surface has been modified by plasma electrolytic oxidation (PEO). The chemical composition of electrolyte in the PEO process consisted of 12 g/L Na3PO4·12 H2O and 1 g/L KOH, and a direct current was applied to the sample. The corrosion resistance of PEO coating and as-cast AZ91 (sample without PEO coating) was assessed using two different electrochemical methods: electrochemical impedance spectroscopy (EIS) and potentiodynamic polarisation (PDP) in 0.1 M NaCl at laboratory temperature. In addition to the electrochemical methods, the morphology of the oxidic coating was observed in the cross-sectional and top surface view by using the SEM technique. For better determination of the microstructure and PEO coating, chemical composition EDX analysis was used. The results of the experiments show that the formation of the PEO coating on AZ91 alloy has a more positive effect on the corrosion resistance in 0.1 M NaCl based on electrochemical methods than in the case of the formed coating on AZ31 alloy from the previous study. Based on electrochemical measurements in the selected environment, the formation of PEO coating on AZ91 was accompanied by a significant increase in polarisation resistance after short-term exposure compared to the as-cast surface. The EIS results showed a 73 times higher Rp value for PEO coated AZ91 when compared to the as-cast AZ91. Correspondingly, a 27 times lower icorr value was observed for PEO coated AZ91 than in the case of substrate AZ91 in 0.1 M NaCl. At the same time, the typically porous and inhomogeneous structure of the formed PEO coating on the magnesium alloy AZ91 was demonstrated.

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Section: Introductionmentioning

confidence: 99%

Effect of Plasma Electrolytic Oxidation on the Short-Term Corrosion Behaviour of AZ91 Magnesium Alloy in Aggressive Chloride Environment

et al. 2022

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“…Titanium and titanium alloys, as new structural materials, are widely used in the aerospace industry for their low density, high strength, corrosion resistance, wear resistance, and high-temperature impact resistance [8][9][10]. Utilizing the lightweight nature of magnesium alloys and the excellent corrosion resistance of titanium and titanium alloys, the development of a new lightweight Ti/Mg laminated composites has broad application prospects [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Mechanical Properties of Ti/Mg Laminated Composites Using a Differential Temperature Rolling Process under a Protective Atmosphere

Qi,

Jia,

Wen

et al. 2024

Preprint

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Addressing the issue of low bonding strength in Ti/Mg laminated composites due to interfacial oxidation, this study employs a differential temperature rolling method using longitudinal induction heating to fabricate Ti/Mg composite plates. The entire process is conducted under an argon gas protective atmosphere, which prevents interfacial oxidation while achieving uniform deformation. The effects of reduction on the mechanical properties and microstructure of the composite plates are thoroughly investigated. Results indicate that as the reduction increases, the bonding strength gradually increases, mainly attributed to the increased mechanical interlocking area and a broader element diffusion layer. This corresponds to a transition from brittle to ductile fracture at the microscopic tensile-shear fracture surface. When the reduction reaches 47.5%, the Ti/Mg interfacial strength reaches 63 MPa, which is approximately a 20% improvement compared to the bonded strength with previous oxidation at the interface. Notably, at a low reduction of 17.5%, the bonding strength is significantly enhanced by about 1 time. Additionally, it is found that a strong bonded interface at high reduction is beneficial in hindering the propagation of interfacial cracks during tensile testing, enhancing the ability of the Ti/Mg composite plates to resist interfacial delamination.

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“…Ti/Al laminated composites not only combine the advantages of titanium and aluminum alloy but can relatively reduce costs, thus it is widely used in the fields of aerospace, national defense, the petrochemical industry, transportation, metallurgical machinery and equipment manufacturing, etc. 5,6 Currently, a variety of techniques have been developed for the manufacture of Ti/Al laminated composites such as explosive welding, 7,8 hot rolling bonding, 9,10 casting bonding, 11,12 diffusion bonding, 13 differential temperature rolling bonding, 14,15 accumulative roll bonding, 16,17 and they also have been successfully applied to fabricate other similar or dissimilar bimetallic composites. However, twin-roll casting bonding has been extensively investigated because of short processing time, low cost, and low energy consumption, 18 and it has been successfully applied to prepare Invar/Cu, 19 Cu/Al, 20 steel/Al, 21 etc.…”

Section: Introductionmentioning

confidence: 99%

Effects of sinusoidal vibration of casting-roller on interface microstructure of Ti/Al laminated composites by twin-roll casting

2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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A new vibration cast-rolling technology of “electromagnetic stirring + dendrite breaking + asynchronous rolling” was proposed with the adoption of sinusoidal vibration of the casting-roller to prepare Ti/Al laminated composites, and the effects of sinusoidal vibration of casting-roller on the interfacial microstructure were investigated in detail. In the interface of traditional cast-rolling materials, the ridge-shaped aluminum materials extend in a straight line or grow transversely into some tiny ridge-shaped branches which look like a quasi-cleavage fracture. With the enhancement of the casting-roller vibration, a large area of hilly aluminum materials in the interface is bonded or present equiaxed dimples gathering to form honeycomb network morphology, which presents ductile fracture characteristics. The vein patterns and morphology differentiation in the interface show that the density and uniformity of composite intensity distribution can be enhanced by increasing the vibration frequency, but the level of enhancement is not that much obvious. The hilly morphology and equiaxed dimples in the interface show that the unit composite strength can be enhanced by increasing the vibration amplitude, while the density of strength distribution is sparse. Under the combined effect of “amplitude + frequency,” the toughness and composite quality of the interface are enhanced by the uniform superposition of the discrete strengths. The area ratio of aluminum bonded to titanium side interface (81%) is 3 times higher than that of traditional cast-rolling material (22%) on the condition of ductile fracture of cast-rolling material with strong vibration (amplitude 0.87 mm, vibration frequency 25 Hz) of casting-roller, and the bonding strength (27.0 N/mm) is twice as high as that of traditional cast-rolling materials (14.9 N/mm), which indicates that the ductile connection between the interface layers can be greatly enhanced by vibration roll-casting.

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Study on the Microstructure and Mechanical Properties of a Ti/Mg Alloy Clad Plate Produced by Explosive Welding

Cited by 13 publications

References 22 publications

Effect of Plasma Electrolytic Oxidation on the Short-Term Corrosion Behaviour of AZ91 Magnesium Alloy in Aggressive Chloride Environment

Effect of Plasma Electrolytic Oxidation on the Short-Term Corrosion Behaviour of AZ91 Magnesium Alloy in Aggressive Chloride Environment

Enhanced Mechanical Properties of Ti/Mg Laminated Composites Using a Differential Temperature Rolling Process under a Protective Atmosphere

Effects of sinusoidal vibration of casting-roller on interface microstructure of Ti/Al laminated composites by twin-roll casting

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