Ductile fracture of notched aluminum alloy specimens under elevated temperature P. 1. Experimental research

Łukasz Derpeński , Andrzej Seweryn , Jan Bartoszewicz

Abstract

This 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.
Author Łukasz Derpeński (FME / DMACS)
Łukasz Derpeński,,
- Department of Mechanics and Applied Computer Science
, Andrzej Seweryn (FME / DMACS)
Andrzej Seweryn,,
- Department of Mechanics and Applied Computer Science
, Jan Bartoszewicz (FME)
Jan Bartoszewicz,,
- Faculty of Mechanical Engineering
Journal seriesTheoretical and Applied Fracture Mechanics, ISSN 0167-8442, e-ISSN 1872-7638, (N/A 100 pkt)
Issue year2019
Vol102
Pages70-82
Keywords in Englishductile fracture, elevated temperature, specimen with notches, uniaxial loading, aluminum alloy
ASJC Classification2210 Mechanical Engineering; 2500 General Materials Science; 2604 Applied Mathematics; 3104 Condensed Matter Physics
DOIDOI:10.1016/j.tafmec.2019.04.001
Internal identifierROC 19-20
Languageen angielski
Score (nominal)100
Score sourcejournalList
ScoreMinisterial score = 100.0, 12-02-2020, ArticleFromJournal
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2017 = 1.466; WoS Impact Factor: 2018 = 2.848 (2) - 2018=2.934 (5)
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