Abstract
In order to have both the surface corrosion resistance of aluminum alloy and the high specific strength characteristics of titanium alloy, titanium alloy TC4, and aluminum alloy 6061 can be used to make aluminum-titanium-aluminum (Al-Ti-Al) three-layer laminated plate by hot rolling. In this paper, the classical laminated plate theory was used to calculate the stiffness, specific stiffness, strength, and specific strength of the laminated plate. The results showed that when the coating rate of titanium alloy TC4 was 0.5, bending specific stiffness and bending specific strength were the minimum, but all other parameters increased with the increase of the coating rate of titanium alloy TC4. Therefore, in actual production, the coating rate of titanium alloy should be avoided being 0.5. Then, the rolling experiments of the Al-Ti-Al laminated plate were carried out with different temperatures, reduction rates, and thickness ratios. Finally, the tensile test and energy spectrum analysis of the laminated plate were carried out. The results showed that, with the increase of rolling temperature, the tensile strength, the extensibility, and the thickness of the diffusion layer increased; if the coating rate of titanium alloy TC4 was between 0.2 and 0.33, the mechanical properties, the bonding strength, and the thickness of the diffusion layer increased with the increase of the coating rate of titanium alloy TC4.
Highlights
Titanium and titanium alloys have the advantages of low density, high strength, good corrosion resistance, good hightemperature performance, and good biocompatibility, which are widely used in the fields of aerospace, marine vessels, petrochemical industry, and medical devices [1,2,3]
Titanium and aluminum alloys can be made into layered Ti-Al laminated plates by laminated technology. ese laminated plates had the titanium alloy’s advantages of high-temperature resistance, corrosion resistance, and high specific strength and had the aluminum alloy’s characteristics of low price, good conductivity, and thermal conductivity
The tensile strength of S5 was 490 MPa and the extensibility was 13%, while the tensile strength of S6 was 513 MPa and the extensibility was 16%. It indicated that the bonding strength of the laminated plate increased with the increase of the coating rate of the titanium alloy when the other rolling process parameters were the same
Summary
Titanium and titanium alloys have the advantages of low density, high strength, good corrosion resistance, good hightemperature performance, and good biocompatibility, which are widely used in the fields of aerospace, marine vessels, petrochemical industry, and medical devices [1,2,3]. Ese laminated plates had the titanium alloy’s advantages of high-temperature resistance, corrosion resistance, and high specific strength and had the aluminum alloy’s characteristics of low price, good conductivity, and thermal conductivity It was a kind of layered composite with excellent comprehensive properties, which had good comprehensive application value and development prospect [13,14,15]. Advances in Materials Science and Engineering obtained TA2 Ti-2A12 Al alloy laminated plate by an explosive composite method and studied its mechanical properties. The stiffness and strength of the Al-Ti-Al laminated plate were studied by classical laminated plate theory; the effect of the coating rate of titanium alloy on the properties of the laminated plate was obtained. E stiffness coefficient of the laminated plate is as follows [30]:
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