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Details

Autor(en) / Beteiligte
Titel
Morphology evolution of β-phase in Al-Mg-Si alloys during aging treatment
Ist Teil von
  • Journal of alloys and compounds, 2024-06, Vol.988, Article 174234
Ort / Verlag
Elsevier B.V
Erscheinungsjahr
2024
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
  • This study aims to clarify the growth process of the β-phase in Al-Mg-Si alloys from the point of view of morphological evolution. The orientation relationship, shape, growth process, misfit value, and interfacial condition between the β-phase and Al matrix were investigated using high-resolution transmission electron microscopy (HR-TEM), focused ion beam (FIB), and optical microscope (OM). In a previous study, the growth process and shape of the β-phase were determined using scanning electron microscopy (SEM). It was proposed that the truncated octahedron (8{111}, 6{100} facets) transforms into a hexahedron (6{100} facets). This study proposes that two new three-dimensional shapes of the β-phase exist between the truncated octahedron and hexahedron, and we identified the {111}β facets at the edges of the β-phase. We proposed the morphology evolution during the growth process of Mg2Si crystals and calculated the misfit to understand that the unstable {111}β facet has a higher misfit value compared to the {001}β and {011}β facets. Our observations provide insight into how they influence the behavior of Mg2Si crystals, which is crucial for predicting the microstructural evolution of Al-Mg-Si alloys and for designing materials with desired properties. •Investigated the morphology evolution of the β-phase in Al-Mg-Si alloys.•Explored β-phase orientation relationship, shape, and growth process using HR-TEM, FIB, and OM.•Discovered {111}β facets and proposed new three-dimensional shapes for the β-phase.•Calculated misfit values, revealing the instability of the (111)β facet compared to (001)β and (011)β facets.•Contributed to understanding microstructural evolution in Al-Mg-Si alloys and material design.
Sprache
Englisch
Identifikatoren
ISSN: 0925-8388
eISSN: 1873-4669
DOI: 10.1016/j.jallcom.2024.174234
Titel-ID: cdi_elsevier_sciencedirect_doi_10_1016_j_jallcom_2024_174234

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