A study of size effect in micro-forming with micro-hardness tests
Resource
Journal of Materials Processing Technology 177: 146-149
Journal
Journal of Materials
Journal Volume
17
Journal Issue
44564
Pages
Processin-g
Date Issued
2006
Date
2006
Author(s)
Tsai, Jia-Wen
Abstract
The size effect on the material properties in the micro-forming is examined in the present study using both the micro-hardness test and the finite element analysis. The measured hardness indicates that the hardness decreases as the dimension of the specimen is downscaled to a small size. The size effect on the material hardness is thus clearly observed. The good agreement between the measured hardness and the flow stress also confirms that the theoretical proportionality between the hardness and the flow stress is still valid in a specimen with downscaled dimensions. It suggests that the stress-strain relations of a downsized specimen can be constructed from the micro-hardness tests in conjunction with the compression tests, if the accurate data acquisition is not available in the compression test equipment for a downscaled specimen. © 2006 Elsevier B.V. All rights reserved.
Subjects
Finite element analysis; Flow stress; Micro-forming; Micro-hardness test; Size effect
Other Subjects
Compaction; Finite element method; Hardness; Metal forming; Plastic flow; Micro-forming; Micro-hardness test; Size effect; Materials science
Type
journal article
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