Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/101636
Title: | Effect of pre-strain on cyclic plastic behaviour of 7050-T6 aluminium alloy | Authors: | Branco, R. Borrego, L. P. Costa, J. D. Antunes, F. V. |
Keywords: | Pre-strain; low-cycle fatigue; cyclic plastic behaviour; 7050-T6 aluminium alloy | Issue Date: | 2019 | Project: | project No. 016713 (PTDC/EMSPRO/ 1356/2014) financed by Project 3599: Promover a Produção Científica e Desenvolvimento Tecnológico e a Constituição de Redes Temáticas (3599-PPCDT) and FEDER funds | Serial title, monograph or event: | Procedia Structural Integrity | Volume: | 17 | Abstract: | This paper aims at studying the pre-strain effect on cyclic plastic behaviour of the 7050-T6 aluminium alloy. In order to meet this goal, different series of tests with various pre-strain histories are performed under fully-reversed strain-controlled conditions. In a second stage, fracture surfaces are examined by scanning electron microscopy to identify the main fracture damage micro-mechanisms associated with the pre-strain scenarios. Overall, the results show that higher tensile pre-strain levels lead to lower fatigue lives. This reduction of the fatigue life expectancy tends to increase for higher cyclic strain amplitudes. | URI: | https://hdl.handle.net/10316/101636 | ISSN: | 24523216 | DOI: | 10.1016/j.prostr.2019.08.024 | Rights: | openAccess |
Appears in Collections: | FCTUC Eng.Mecânica - Artigos em Revistas Internacionais |
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