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Elasticity mapping of precipitates in polycrystalline materials using atomic force acoustic microscopy

: Kumar, A.; Rabe, U.; Hirsekorn, S.; Arnold, W.

Fulltext urn:nbn:de:0011-n-760328 (284 KByte PDF)
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Copyright AIP
Created on: 8.7.2008

Applied Physics Letters 92 (2008), No.18, Art. 183106, 3 pp.
ISSN: 0003-6951 (Print)
ISSN: 1077-3118
Journal Article, Electronic Publication
Fraunhofer IZFP ()
elastic property

We determined the isotropic indentation modulus of precipitates in cubic materials by using the indentation modulus of the matrix as a reference. This eliminates major practical difficulty of repeatedly switching between a sample and a reference for measurement of indentation modulus using atomic force acoustic microscopy. The methodology has been demonstrated for mapping the elastic stiffness of ~500 nm sized M23C6 precipitates in alloy 625 and ferritic steel with a spatial resolution of ~50 nm.