NDLI: Random walk analysis of grain motion during superplastic deformation of TZP

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Random walk analysis of grain motion during superplastic deformation of TZP

Content Provider	Scilit
Author	Okamoto, T. Yasuda, K. Shiota, T.
Copyright Year	2009
Description	Journal: Journal of Physics: Conference Series This study focuses on grain motion in TZP (Tetragonal Zirconia Polycrystal) ceramics during superplastic deformation. The specimen was 16 times elongated repeatedly at 1400°C in air. The increment of true plastic strain was set to be 2%, and the specimen was deformed up to 30.3% true plastic strain finally. After each deformation, displacement vectors of specified 748 grains were measured from their position vectors determined by FE-SEM micrographs. As a result, the grains move to the tensile loading direction in zigzag way. And also, the zigzag motion changes with plastic strain: The grains move randomly (random walk motion) by the first 15% true plastic strain, and then grain motion becomes spatially uniform gradually. It is related to changes of constraint of surrounding matrix.
Related Links	http://iopscience.iop.org/article/10.1088/1742-6596/191/1/012004/pdf
ISSN	17426588
e-ISSN	17426596
DOI	10.1088/1742-6596/191/1/012004
Journal	Journal of Physics: Conference Series
Issue Number	1
Volume Number	191
Language	English
Publisher	IOP Publishing
Publisher Date	2009-11-01
Access Restriction	Open
Subject Keyword	Journal: Journal of Physics: Conference Series Random Walk
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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