Analysis of Strain Localization at High Angle Grain Boundaries During Creep of a Polycrystalline Superalloy Using SEM-Based Digital Image Correlation

Strain Amount Dependent Grain Size and Orientation Developments during Hot Compression of a Polycrystalline Nickel Based Superalloy

Controlling grain size in polycrystalline nickel base superalloy is vital for obtaining required mechanical properties. Typically, a uniform and fine grain size is required throughout forging process to realize the superplastic deformation. Strain amount occupied a dominant position in manipulating the dynamic recrystallization (DRX) process and regulating the grain size of the alloy during hot...

in-situ measurement of strain and strain rate during machining based on image correlation analysis

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Grain Boundaries in Polycrystalline Alumina

On APFIM of Grain Boundaries in a Nickel Base Superalloy

Experimental details of atom probe field ion microscopy (APFIM) of a Ni-16Cr-9Fe alloy are presented. In particular, studies concerning analysis of intergranular carbides and borides and segregation to grain boundaries are described. It was found that NiZ3B6 precipitates are very sensitive to preferential field evaporation, which necessitates optimization of the analysis conditions. In the FIM ...

Strain Mapping of Al–Mg Alloy with Multi-scale Grain Structure using Digital Image Correlation Method

B. Ahn*, S. R. Nutt 1. Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA, 90089-0241, USA *[email protected] Abstract: Al–Mg alloy powder was mechanically milled in liquid N2 (cryomilling) to produce thermally stable powder with nanocrystalline (NC) microstructure for the manufacture of highstrength alloys. A multi-scale microstructure w...