A
Augusto B. Lopes
Researcher at University of Aveiro
Publications - 54
Citations - 1933
Augusto B. Lopes is an academic researcher from University of Aveiro. The author has contributed to research in topics: Hardening (metallurgy) & Microstructure. The author has an hindex of 20, co-authored 51 publications receiving 1699 citations. Previous affiliations of Augusto B. Lopes include Lucideon & Katholieke Universiteit Leuven.
Papers
More filters
Journal ArticleDOI
Field emission SEM comparison of four postfixation drying techniques for human dentin
TL;DR: HMDS drying seemed to preserve better the collagen network and the microporosity of the demineralized dentin surface, and the air-drying method caused some artefacts, such as surface collapsing and thickening of the denatured collagen layer.
Journal ArticleDOI
Morphological field emission-SEM study of the effect of six phosphoric acid etching agents on human dentin
Jorge Perdigão,Paul Lambrechts,Bart Van Meerbeek,Ângelo R. Tomé,Guido Vanherle,Augusto B. Lopes +5 more
TL;DR: The results obtained suggest that similar concentrations of phosphoric acid etchants containing distinct thickeners result in different demineralization depths as well as different morphology of etched dentin.
Journal ArticleDOI
Retrogression and re-ageing of 7075 aluminium alloy : microstructural characterization
TL;DR: In this paper, the microstructures produced by the retrogression and re-ageing treatments were characterized by transmission electron microscopy, electron diffraction and differential scanning calorimetry.
Journal ArticleDOI
Plastic flow for non-monotonic loading conditions of an aluminum alloy sheet sample
Frédéric Barlat,Frédéric Barlat,J.M. Ferreira Duarte,José Grácio,Augusto B. Lopes,Edgar F. Rauch +5 more
TL;DR: In this paper, the behavior of the material after reloading was analyzed in terms of dislocation microstructure and crystallographic texture evolutions using uniaxial tension tests interrupted during loading to assess the recovery that takes place during this time.
Journal ArticleDOI
Effect of texture and microstructure on strain hardening anisotropy for aluminum deformed in uniaxial tension and simple shear
Augusto B. Lopes,Frédéric Barlat,Frédéric Barlat,José Grácio,J. Ferreira Duarte,Edgar F. Rauch +5 more
TL;DR: In this article, uniaxial and simple shear stress-strain curves were obtained for a 1050-O aluminum alloy sheet sample in different specimen orientations with respect to the material symmetry axes.