Implications of EBSD-based Grain Size Measurement on Structure-Property Correlations
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Milo V. Kral
Abstract
Samples of annealed and cold rolled 70%Cu-30%Zn brass and 800H alloy were characterized using electron backscatter diffraction (EBSD) pattern analysis to determine average grain diameter, with the ability to differentiate between random high angle grain boundaries and annealing twin boundaries. Hardness measurements of both materials and minimum creep rates for the brass alloy were measured and compared to average grain diameter measurements, which had been calculated with twin boundaries both included and excluded (in accord with ASTM E 112). The present results indicate that annealing twin boundaries contribute to mechanical properties and therefore should be considered in structure-property correlations.
Kurzfassung
Es wurden Proben von geglühtem und kalt gewalztem Messing aus 70%Cu und 30%Zn und aus der Legierung 800H mit Hilfe einer Analyse des Musters der Elektronenrückstreubeugung (EBSD) zur Bestimmung des durchschnittlichen Korndurchmessers mit der Fähigkeit, zwischen zufälligen Großwinkelkorngrenzen zu differenzieren, und durch Glühen von Zwillingsgrenzen charakterisiert. Es wurden Härtemessungen an beiden Werkstoffen sowie der Mindestkriechgeschwindigkeiten für Legierung Messing gemessen und mit Messungen des durchschnittlichen Korndurchmessers verglichen, der sowohl unter Einbeziehung als auch unter Ausschluss von Zwillingsgrenzen (gemäß ASTM E 112) errechnet worden waren. Die vorliegenden Ergebnisse zeigen an, dass sich durch das Glühen von Zwillingsgrenzen die mechanischen Eigenschaften verändern und deshalb in den Wechselbeziehungen zwischen Struktur und Eigenschaften berücksichtigt werden sollten.
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© 2009, Carl Hanser Verlag, München
Artikel in diesem Heft
- Contents/Inhalt
- Inhalt / Contents
- Technical Contributions/Fachbeiträge
- Metallographic Characterization of Additive-Layer Manufactured Products by Electron Beam Melting of Ti-6Al-4V Powder
- A Comparison of Grain Quantitative Evaluation Performed with Standard Method of Imaging with Light Microscopy and EBSD Analysis
- Implications of EBSD-based Grain Size Measurement on Structure-Property Correlations
- Co-site Microscopy: Case Studies
Artikel in diesem Heft
- Contents/Inhalt
- Inhalt / Contents
- Technical Contributions/Fachbeiträge
- Metallographic Characterization of Additive-Layer Manufactured Products by Electron Beam Melting of Ti-6Al-4V Powder
- A Comparison of Grain Quantitative Evaluation Performed with Standard Method of Imaging with Light Microscopy and EBSD Analysis
- Implications of EBSD-based Grain Size Measurement on Structure-Property Correlations
- Co-site Microscopy: Case Studies
