Abstract
The study presents the results of tests of local static and cyclic properties of an explosively welded AA2519-AA1050-Ti6Al4V layered material. In order to perform the analysis, tests were carried out with the use of microspecimens collected from 10 layers of AA2519-AA1050-Ti6Al4V material. Additionally, the determined static properties were compared with the results of an analysis based on microhardness measurement. Based on the test results, slight differences in static properties were found for particular layers of the material as well as a distinct softening of the AA2519 layer in relation to the base values. It was also found that the application of microhardness measurement for analysis of static properties can lead to their overestimation. Cyclic properties were described by the Ramberg-Osgood model. As in the case of static properties, the cyclic properties of particular layers of AA2519-AA1050-Ti6Al4V material differ insignificantly. The tests of cyclic properties showed that application for their description the Ramberg-Osgood model, based on parameters determined for whole range of plastic strains, can lead to significant errors in the modeling of a layered material. The cyclic instability of Ti6Al4V and AA2519 alloys has a significant influence on the parameters to be determined for material models of the analyzed material.
Highlights
Due to high diversification of the properties of particular materials that make up the layered materials, it is possible to achieve performance characteristics which are different from the properties of the base materials
Explosion welding was applied in the creation of a new constructional layered material AA2519-AA1050-Ti6Al4V (Al/Ti), which was developed in cooperation with the company Explomet and scientific units of the Military University of Technology in Warsaw, the Warsaw University of Technology, the Institute of Non-Ferrous Metals, the Space Research Centre of the Polish Academy of Sciences, and UTP University of Science and Technology in Bydgoszcz
Their differences calculated in reference to the mean value of the whole cross-section were in the range minus 2.5 to plus 2.5% in the case of AA2519 alloy and minus 5.6 to plus 5.17% for the Ti6Al4V alloy
Summary
Due to high diversification of the properties of particular materials that make up the layered materials, it is possible to achieve performance characteristics which are different from the properties of the base materials. The layered materials can be manufactured using different technologies; in the case of metal materials, the range of possible technologies is limited and includes mainly diffusion bonding [1, 2], cold [3,4,5] and hot roll bonding [6,7,8], and explosive welding [9]. Explosive welding of base materials involves the application of very high kinetic energy given to the external layer (flayer) through controlled explosion of an explosive (high energy material), which enables the connection of materials with. Tests of the mechanical properties of layered materials involve accomplishing some basic tasks in
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