Ductile fracture of notched aluminum alloy specimens under elevated temperature P. 1. Experimental research
Łukasz Derpeński , Andrzej Seweryn , Jan Bartoszewicz
AbstractThis paper presents the results of experimental fracture tests of axisymmetric specimens with circumferential notches under elevated temperature conditions. Five different radii at the notch root and four temperature levels were used for the tests. Specimens used in research were made of the EN-AW 2024T3 aluminum alloy. It was observed that elevated temperature increases the ductility of the tested material. For the adopted aluminum alloy, only at 300 °C was a significant decrease of material hardening obtained. The effect of the notch shape and elevated temperature on the decrease of the critical force value is also presented. On the basis of binary image conversion, the influence of elevated temperature on the size, quantity and distribution of dimples on the fracture surfaces was determined. Obtained results show the elevated temperature decrease material properties, such as Young modulus, yield point, ultimate strength, gauge length elongation.
|Journal series||Theoretical and Applied Fracture Mechanics, ISSN 0167-8442, e-ISSN 1872-7638, (N/A 100 pkt)|
|Keywords in English||ductile fracture, elevated temperature, specimen with notches, uniaxial loading, aluminum alloy|
|ASJC Classification||; ; ;|
|Internal identifier||ROC 19-20|
|Score||= 100.0, 12-02-2020, ArticleFromJournal|
|Publication indicators||: 2017 = 1.466; : 2018 = 2.848 (2) - 2018=2.934 (5)|
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