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Local mechanical properties of explosively welded AA2519-AA1050-Ti6Al4V layered material
Welding in the World ( IF 2.1 ) Pub Date : 2020-09-01 , DOI: 10.1007/s40194-020-00984-2
Dariusz Boroński

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.



中文翻译:

爆炸焊接AA2519-AA1050-Ti6Al4V层状材料的局部力学性能

该研究提出了爆炸性焊接AA2519-AA1050-Ti6Al4V层状材料的局部静态和循环特性的测试结果。为了进行分析,使用了从10层AA2519-AA1050-Ti6Al4V材料中收集的显微样品进行测试。另外,将确定的静态性能与基于显微硬度测量的分析结果进行比较。根据测试结果,发现材料的特定层的静态特性略有不同,以及相对于基值的AA2519层明显软化。还发现将显微硬度测量应用于静态特性分析可能会导致其高估。循环特性由Ramberg-Osgood模型描述。与静态属性一样,AA2519-AA1050-Ti6Al4V材料的特定层的循环特性差异不明显。循环特性测试表明,基于对整个塑性应变范围确定的参数,应用Ramberg-Osgood模型进行描述可能会导致层状材料建模中的重大误差。Ti6Al4V和AA2519合金的循环不稳定性对所分析材料的材料模型要确定的参数有重大影响。

更新日期:2020-09-02
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