Novel nanoindentation strain rate sweep method for continuously investigating the strain rate sensitivity of materials at the nanoscale
We introduce a new nanoindentation method to continuously measure the hardness while sweeping through orders of magnitudes of strain rates within a single experiment. While nanoindentation already allows the determination of the strain rate sensitivity of materials by means of strain rate jump tests...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-12-01
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| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127523008869 |
| _version_ | 1797391926122512384 |
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| author | Hendrik Holz Benoit Merle |
| author_facet | Hendrik Holz Benoit Merle |
| author_sort | Hendrik Holz |
| collection | DOAJ |
| description | We introduce a new nanoindentation method to continuously measure the hardness while sweeping through orders of magnitudes of strain rates within a single experiment. While nanoindentation already allows the determination of the strain rate sensitivity of materials by means of strain rate jump tests, these are typically limited to few discrete strain rates. With the new method, the strain rate sensitivity can be measured continuously as a function of the strain rate. Applications to fused silica, Zn-22 %Al superplastic alloy, single crystalline aluminum, various nanocrystalline metals and a palladium-based metallic glass are shown. Besides some discrepancy with the reference measurements, the new method seems only affected by the presence of a strong nanoindentation size effect. Provided this indentation size effect is not excessively large and can be corrected for accurately, the method proves robust, with no suggestion that the direction of the strain rate sweep affects the evaluation of the strain rate sensitivity. |
| first_indexed | 2024-03-08T23:39:46Z |
| format | Article |
| id | doaj.art-81d78ec6eaab4832a3a43ce51538fefd |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-03-08T23:39:46Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-81d78ec6eaab4832a3a43ce51538fefd2023-12-14T05:20:21ZengElsevierMaterials & Design0264-12752023-12-01236112471Novel nanoindentation strain rate sweep method for continuously investigating the strain rate sensitivity of materials at the nanoscaleHendrik Holz0Benoit Merle1Institute of Materials Engineering, University of Kassel, Mönchebergstr. 3, 34125 Kassel, Germany; Materials Science & Engineering, Institute I, Friedrich-Alexander-Universität Erlangen-Nürnberg, Martensstr. 5, 91058 Erlangen, Germany; Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Straße 1, 40237 Düsseldorf, Germany; Corresponding author at: Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Straße 1, 40237 Düsseldorf, GermanyInstitute of Materials Engineering, University of Kassel, Mönchebergstr. 3, 34125 Kassel, Germany; Materials Science & Engineering, Institute I, Friedrich-Alexander-Universität Erlangen-Nürnberg, Martensstr. 5, 91058 Erlangen, GermanyWe introduce a new nanoindentation method to continuously measure the hardness while sweeping through orders of magnitudes of strain rates within a single experiment. While nanoindentation already allows the determination of the strain rate sensitivity of materials by means of strain rate jump tests, these are typically limited to few discrete strain rates. With the new method, the strain rate sensitivity can be measured continuously as a function of the strain rate. Applications to fused silica, Zn-22 %Al superplastic alloy, single crystalline aluminum, various nanocrystalline metals and a palladium-based metallic glass are shown. Besides some discrepancy with the reference measurements, the new method seems only affected by the presence of a strong nanoindentation size effect. Provided this indentation size effect is not excessively large and can be corrected for accurately, the method proves robust, with no suggestion that the direction of the strain rate sweep affects the evaluation of the strain rate sensitivity.http://www.sciencedirect.com/science/article/pii/S0264127523008869Nanoindentation methodStrain rate sensitivityStrain rate sweepStrain rate jump testsActivation volumeStrain rate history dependence |
| spellingShingle | Hendrik Holz Benoit Merle Novel nanoindentation strain rate sweep method for continuously investigating the strain rate sensitivity of materials at the nanoscale Materials & Design Nanoindentation method Strain rate sensitivity Strain rate sweep Strain rate jump tests Activation volume Strain rate history dependence |
| title | Novel nanoindentation strain rate sweep method for continuously investigating the strain rate sensitivity of materials at the nanoscale |
| title_full | Novel nanoindentation strain rate sweep method for continuously investigating the strain rate sensitivity of materials at the nanoscale |
| title_fullStr | Novel nanoindentation strain rate sweep method for continuously investigating the strain rate sensitivity of materials at the nanoscale |
| title_full_unstemmed | Novel nanoindentation strain rate sweep method for continuously investigating the strain rate sensitivity of materials at the nanoscale |
| title_short | Novel nanoindentation strain rate sweep method for continuously investigating the strain rate sensitivity of materials at the nanoscale |
| title_sort | novel nanoindentation strain rate sweep method for continuously investigating the strain rate sensitivity of materials at the nanoscale |
| topic | Nanoindentation method Strain rate sensitivity Strain rate sweep Strain rate jump tests Activation volume Strain rate history dependence |
| url | http://www.sciencedirect.com/science/article/pii/S0264127523008869 |
| work_keys_str_mv | AT hendrikholz novelnanoindentationstrainratesweepmethodforcontinuouslyinvestigatingthestrainratesensitivityofmaterialsatthenanoscale AT benoitmerle novelnanoindentationstrainratesweepmethodforcontinuouslyinvestigatingthestrainratesensitivityofmaterialsatthenanoscale |