Details
| Original language | English |
|---|---|
| Pages (from-to) | 33-40 |
| Number of pages | 8 |
| Journal | Metallurgical and Mining Industry |
| Volume | 4 |
| Issue number | 4 |
| Publication status | Published - 2012 |
Abstract
The microstructure and material damage due to elastic-plastic strains can be investigated by means of tensile tests in the transmission electron microscope. Owing to the non-standard specimen geometries which are adapted to the time-consuming preparation methods, it is only possible to make conditional statements about the stresses and strains operating in the region of observation. For this reason, a numerically based method was developed to determine a correlation between the displacement of the specimen's loading-fixture and the locally operating stresses or strains observed in the material region. Here, the TEM specimen geometry is firstly modelled using FE-software. Following this, a tensile test is numerically simulated for this geometry by means of the FE-software and the corresponding determined stresses or strains are ascertained for the respective displacements. In this way, it is possible to correlate the microstructural changes observed in the transmission electron microscope with the local strains during the in situ tests.
Keywords
- FEM, In situ tensile tests, TEM
ASJC Scopus subject areas
- Engineering(all)
- Mechanical Engineering
- Engineering(all)
- Industrial and Manufacturing Engineering
- Materials Science(all)
- Metals and Alloys
- Earth and Planetary Sciences(all)
- Earth and Planetary Sciences (miscellaneous)
- Engineering(all)
- Electrical and Electronic Engineering
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In: Metallurgical and Mining Industry, Vol. 4, No. 4, 2012, p. 33-40.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Numerical investigation of in situ TEM tensile tests
AU - Nürnberger, F.
AU - Stolbchenko, M.
AU - Grydin, O.
AU - Gerstein, G.
AU - Faßmann, D.
AU - Schaper, M.
PY - 2012
Y1 - 2012
N2 - The microstructure and material damage due to elastic-plastic strains can be investigated by means of tensile tests in the transmission electron microscope. Owing to the non-standard specimen geometries which are adapted to the time-consuming preparation methods, it is only possible to make conditional statements about the stresses and strains operating in the region of observation. For this reason, a numerically based method was developed to determine a correlation between the displacement of the specimen's loading-fixture and the locally operating stresses or strains observed in the material region. Here, the TEM specimen geometry is firstly modelled using FE-software. Following this, a tensile test is numerically simulated for this geometry by means of the FE-software and the corresponding determined stresses or strains are ascertained for the respective displacements. In this way, it is possible to correlate the microstructural changes observed in the transmission electron microscope with the local strains during the in situ tests.
AB - The microstructure and material damage due to elastic-plastic strains can be investigated by means of tensile tests in the transmission electron microscope. Owing to the non-standard specimen geometries which are adapted to the time-consuming preparation methods, it is only possible to make conditional statements about the stresses and strains operating in the region of observation. For this reason, a numerically based method was developed to determine a correlation between the displacement of the specimen's loading-fixture and the locally operating stresses or strains observed in the material region. Here, the TEM specimen geometry is firstly modelled using FE-software. Following this, a tensile test is numerically simulated for this geometry by means of the FE-software and the corresponding determined stresses or strains are ascertained for the respective displacements. In this way, it is possible to correlate the microstructural changes observed in the transmission electron microscope with the local strains during the in situ tests.
KW - FEM
KW - In situ tensile tests
KW - TEM
UR - http://www.scopus.com/inward/record.url?scp=84880953188&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:84880953188
VL - 4
SP - 33
EP - 40
JO - Metallurgical and Mining Industry
JF - Metallurgical and Mining Industry
SN - 2076-0507
IS - 4
ER -