Metallography of aluminum is used in quality control for grain size determination and to determine microstructure defects on polished and etched specimens. In addition, specimens are often checked for impurities, such as oxides or zirconium aluminides.

Aug 19, 2019 · Most metals, including aluminum, are typically found in a polycrystalline state. Polycrystalline materials are solids comprised of a variety of differing crystallites, which are also commonly referred to as the grain of the metal.

Apr 14, 2012 · Contemporary four or five step preparation procedures are given for preparing aluminum and its alloys. Results are also shown for revealing grain size with Weck’s reagent, a useful alternative to anodizing.

Find a detailed explanation of metal grain structure analysis – including how to prepare samples for microscopic analysis and understand the structural properties of metals – with expertise and insight from Struers, the world’s leading materialographic and metallographic experts.

Jun 22, 2021 · In the solid state, aluminium atoms occupy a face-centred cubic structure. During solidification regions, or ‘crystallites’, of solid aluminium start to form where the atoms are all aligned in the same orientation. These are called grains.

Sep 30, 2007 · Microstructure and material flow of aluminum alloys have a significant influence on the mechanical properties and surface quality. In extrusion of aluminum billets at high temperatures the...

Aug 1, 2022 · In this work, we present a computed dataset of aluminum GBs that span the entire 5D space and provide insight into the range of metastable atomic configurations. In total, 7304 unique aluminum GB structures are examined, with a full set of metastable atomic structure configurations for each.

Sep 25, 2010 · The purpose of this work is the experimental investigation and statistical characterization of the grain microstructure and its development in aluminum alloys during hot extrusion. To this end, electron backscatter diffraction (EBSD) data are utilized.

Jan 1, 2025 · This study aims to assess the link between the grain properties (grain boundary, misorientation, and grain size), precipitate heterogeneities, and hardness evolution. This link will be investigated for each layer and along the height of the deposition to determine the impact of MLFS on the AA7075 alloy.

What are grains and grain boundaries? A grain is a collection of many repeating crystalline structures all oriented in the same direction. Grains can vary in length and width, depending on how long the repeating crystals go on for. When two grains oriented in different directions meet, a grain boundary is formed.