Accurate electron channeling contrast analysis of a low angle sub-grain boundary

SCRIPTA MATERIALIA

卷:109

Article

Mansour, H.¹  Crimp, M. A.²  Gey, N.^1,3  Maloufi, N.^1,3 

[1] Univ Lorraine, Lab Etud Microstruct & Mecan Mat LEM3, F-57045 Metz, France

[2] Michigan State Univ, Dept Chem Engn & Mat Sci, E Lansing, MI 48824 USA

[3] Univ Lorraine, Lab Excellence Design Alloy Met Low mAss Struct D, F-57045 Metz, France

关键词: HR-SACP assisted ECCI;    Electron backscattering diffraction (EBSD);    Grain boundary structure;    Misorientation;    Dislocation structure;   

DOI  :  10.1016/j.scriptamat.2015.07.023

来源: Elsevier

【 摘 要 】

High resolution selected area channeling pattern (HR-SACP) assisted accurate electron channeling contrast imaging (A-ECCI) was used to unambiguously characterize the structure of a low angle grain boundary in an interstitial-free-steel. The boundary dislocations were characterized using TEM-style contrast analysis. The boundary was determined to be tilt in nature with a misorientation angle of 0.13 degrees consistent with the HR-SACP measurements. The results were verified using high accuracy electron backscatter diffraction (EBSD), confirming the approach as a discriminating tool for assessing low angle boundaries. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

Free