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Author

  • Wolfgang Sprengel
2011

Atomic Defects in Ultrafine-Grained Metals: Direct and Specific Studies for their Characterization and their Kinetics

Sprengel, W., Oberdorfer, B., Steyskal, E-M., Puff, W., Hugenschmidt, C., Pikart, P., Zehetbauer, M., Pippan, R. & Würschum, R., 3 Jul 2011.

Research output: Contribution to conference(Old data) Lecture or Presentation

Grain boundary excess volume in metals determined by dilatometry

Steyskal, E-M., Oberdorfer, B., Sprengel, W., Zehetbauer, M., Pippan, R. & Würschum, R., 2011, p. 441-441.

Research output: Contribution to conference(Old data) Lecture or Presentation

In-situ probing of fast defect annealing in Cu and Ni with a high-intensity positron beam

Oberdorfer, B., Steyskal, E-M., Sprengel, W., Puff, W., Pikart, P., Hugenschmidt, C., Zehetbauer, M., Pippan, R. & Würschum, R., 2011, Verhandlungen der Deutschen Physikalischen Gesellschaft. ., p. 441-441

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Recrystallization kinetics of ultrafine-grained Ni studied by dilatometry

Oberdorfer, B., Steyskal, E-M., Sprengel, W., Pippan, R., Zehetbauer, M., Puff, W. & Würschum, R., 2011, In : Journal of Alloys and Compounds. 509, p. 5309-5311

Research output: Contribution to journalArticle

2012

Absolute concentration of free volumes and related properties of ultrafine grained metals studied by time-dependent dilatometry

Oberdorfer, B., Steyskal, E-M., Sprengel, W., Zehetbauer, M., Pippan, R. & Würschum, R., 26 Mar 2012.

Research output: Contribution to conference(Old data) Lecture or Presentation

Defect investigations of an ironnickel meteorite

Parz, P., Puff, W., Sprengel, W. & Leitner, M., 2012.

Research output: Contribution to conferencePoster

Defects in an iron-nickel meteorite examined with positrons

Parz, P., Puff, W., Sprengel, W. & Leitner, M., 2012.

Research output: Contribution to conferencePoster

Dilatometry: a powerful tool for the study of defects in ultrafine grained metals

Sprengel, W., Oberdorfer, B., Steyskal, E-M. & Würschum, R., 2012, In : Journal of Materials Science. 47, p. 7921-7925

Research output: Contribution to journalArticle

Dilatometry – A Powerful Tool for the Study of Defects in Ultrafine Grained Metals

Sprengel, W., Oberdorfer, B., Steyskal, E-M. & Würschum, R., 12 Mar 2012.

Research output: Contribution to conference(Old data) Lecture or Presentation

Direct experimental determination of grain boundary excess volume in metals

Steyskal, E-M., Oberdorfer, B., Sprengel, W., Zehetbauer, M., Pippan, R. & Würschum, R., 2012, In : Physical Review Letters. 108, p. 055504/1-055504/5

Research output: Contribution to journalArticle

Direct measurements of reversible free-volume formation in bulk Zr56Al7Cu24Ni10Co3 glass below the glass transition temperature

Luckabauer, M., Wunderlich, R., Fecht, H-J. & Sprengel, W., 18 Sep 2012.

Research output: Contribution to conference(Old data) Lecture or Presentation

Element-specific study of local segmental dynamics of polyethylene terephthalate upon physical aging

Sato, K. & Sprengel, W., 2012, In : The Journal of Chemical Physics. 137, p. 104906/1-104906/7

Research output: Contribution to journalArticle

Free volumes in bulk nanocrystalline metals studied by the complementary techniques of positron annihilation and dilatometry

Würschum, R., Oberdorfer, B., Steyskal, E-M., Sprengel, W., Puff, W., Pikart, P., Hugenschmidt, C. & Pippan, R., 2012, In : Physica / B. 407, p. 2670-2675

Research output: Contribution to journalArticle

2013

Comprehensive defect characterization of different iron samples after severe plastic deformation

Puff, W., Zhou, X., Oberdorfer, B., Scherwitzl, B. R., Parz, P., Sprengel, W. & Würschum, R., 2013, In : Journal of Physics / Conference Series. 443, 1, p. 012033-012033

Research output: Contribution to journalArticle

Dilatometric studies of volume-type atomic defects and their kinetics in ultrafine-grained and amorphous metals

Sprengel, W. & Luckabauer, M., 24 Jun 2013.

Research output: Contribution to conference(Old data) Lecture or Presentation

Open Access
File

Dilatometric studies of volume-type atomic defects and their kinetics in ultrafine-grained and amorphous metals

Sprengel, W. & Luckabauer, M., 7 Oct 2013.

Research output: Contribution to conference(Old data) Lecture or Presentation

High-resolution laser dilatometry applied to reversible relaxation phenomena in a Zr-based bulk metallic glass

Luckabauer, M., Kühn, U., Eckert, J. & Sprengel, W., 2 Jul 2013.

Research output: Contribution to conference(Old data) Lecture or Presentation

Reaction diffusion and interdiffusion in some binary metallic systems

Mehrer, H. & Sprengel, W., 2013, In : Philosophical magazine (London) / Letters. 93, 16, p. 1971-1986

Research output: Contribution to journalArticle

Self- and Solute Diffusion, Interdiffusion and Thermal Vacancies in the System Iron-Aluminium

Mehrer, H., Luckabauer, M. & Sprengel, W., 2013, In : Defect and diffusion forum [Elektronische Resource]. 333, p. 1-25

Research output: Contribution to journalArticle

Vacancy-type and interface-related defects in ultrafine grained materials (Invited talk)

Würschum, R., Parz, P., Puff, W. & Sprengel, W., 2013, SLOPOS13 - Book of Abstracts. ., p. 24-24

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2014

Assessment of and clinical experience with a novel system for 3D radiation treatment plan QA intended for independent dose calculation for VMAT

Winkler, P., Uller, A., Odreitz, S., Maier, K. & Sprengel, W., 7 Sep 2014.

Research output: Contribution to conference(Old data) Lecture or Presentation

Charging-induced defects in LiCo-oxide battery electrodes

Würschum, R., Sprengel, W., Reiner, M., Hugenschmidt, C., Fiedler, M. & Schmitz, G., 22 Aug 2014.

Research output: Contribution to conference(Old data) Lecture or Presentation

Defect Studies in Ultrafine-Grained and Amorphous Metals with Dilatometric Techniques

Sprengel, W., 2014, International Conference on Diffusion in Materials. ., p. I-10-x

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Dilatometry as tool for measuring absolute concentrations of free volumes in SPD metals

Würschum, R., Sprengel, W., Kotzurek, J. A., Steyskal, E-M. & Oberdorfer, B., 30 Jun 2014.

Research output: Contribution to conference(Old data) Lecture or Presentation

Evaluation and implementation of the Acuros XB dose calculation algorithm for clinical radiation therapy treatment planning

Buschmann, M., Odreitz, S., Sprengel, W. & Winkler, P., 7 Sep 2014.

Research output: Contribution to conference(Old data) Lecture or Presentation

Free Volume in SPD-Ni: Influence of Deformation Method, Structure and Purity studied by Difference Dilatometry

Kotzurek, J. A., Trubel, S., Hohenwarter, A., Divinskiy, S., Sprengel, W., Wilde, G., Pippan, R. & Würschum, R., 30 Jun 2014.

Research output: Contribution to conference(Old data) Lecture or Presentation

Grain boundary excess volume and defect annealing of copper after high-pressure torsion

Oberdorfer, B., Setman, D., Steyskal, E-M., Hohenwarter, A., Sprengel, W., Zehetbauer, M., Pippan, R. & Würschum, R., 2014, In : Acta materialia. 68, p. 189-195

Research output: Contribution to journalArticle

High-resolution laser dilatometry: Volume equilibration in a bulk metallic glass

Luckabauer, M., Kühn, U., Eckert, J. & Sprengel, W., 3 Apr 2014.

Research output: Contribution to conference(Old data) Lecture or Presentation

Methodik zur verbesserten Datenerfassung bei der 4D-Computertomographie

Kupper, M., Sprengel, W., Winkler, P. & Zurl, B., 2014.

Research output: Contribution to conferencePoster

Specific volume in a bulk metallic glass studied with complementary techniques of dilatometry and in-situ Doppler broadening

Sprengel, W., Luckabauer, M., Hugenschmidt, C. & Reiner, M., 14 Sep 2014.

Research output: Contribution to conference(Old data) Lecture or Presentation

Specific volume study of a bulk metallic glass far below its calorimetrically determined glass transition temperature

Luckabauer, M., Kühn, U., Eckert, J. & Sprengel, W., 2014, In : Physical Review / B. 89, p. 174113-1-174113-6

Research output: Contribution to journalArticle

Von der Vermessung atomarer Freiräume zu neuen Materialien; From Measuring Open Spaces to Novel Materials

Sprengel, W. & Würschum, R., 2014, Graz: Medienfabrik Graz. (Forschungsjournal der TU Graz, 2014-1; vol. 11)

Research output: Book/ReportOther report

2015

Defects and structural anisotropy of HPT- and ECAP-deformed metals studied by difference dilatometry (Highlight lecture)

Sprengel, W., Kotzurek, J., Neubauer, C., Steyskal, E-M., Hohenwarter, A., Pippan, R., Trubel, S., Divinski, S., Wilde, G. & Würschum, R., 21 Sep 2015.

Research output: Contribution to conference(Old data) Lecture or Presentation

Defects and structural anisotropy of HPT- and ECAP-deformed metals studied by differential dilatometry

Würschum, R., Kotzurek, J., Neubauer, C., Steyskal, E-M., Sprengel, W., Pippan, R., Trubel, S., Divinski, S. & Wilde, G., 2015.

Research output: Contribution to conference(Old data) Lecture or Presentation

Defects and structural anisotropy of HPT- and ECAP-deformed Ni studied by difference dilatometry

Kotzurek, J., Hohenwarter, A., Trubel, S., Neubauer, C., Divinskiy, S., Sprengel, W., Wilde, G., Pippan, R. & Würschum, R., 15 Mar 2015.

Research output: Contribution to conference(Old data) Lecture or Presentation

2016

Anisotropic defect recovery in HPT- and ECAP- processed ultrafine-grained Ni studied by difference dilatometry

Kotzurek, J., Hohenwarter, A., Krystian, M., Sprengel, W., Pippan, R. & Würschum, R., 2016, p. 312-313.

Research output: Contribution to conferencePoster

Combined volumetric energetic and microstructural defect analysis of ECAP-processed nickel

Reglitz, G., Oberdorfer, B., Fleischmann, N., Kotzurek, J., Divinski, S., Sprengel, W., Wilde, G. & Würschum, R., 2016, In : Acta materialia. 103, p. 396-406

Research output: Contribution to journalArticle

Direct measurement of vacancy relaxation by dilatometry

Kotzurek, J., Steyskal, E-M., Oberdorfer, B., Hohenwarter, A., Pippan, R., Sprengel, W. & Würschum, R., 2016, In : Applied Physics Letters. 109, p. 021906 4 p.

Research output: Contribution to journalArticle

Excess volume and defect annealing in HPT- and ECAP-processed ultrafine-grained Ni studied by difference dilatometry

Würschum, R., Kotzurek, J., Hohenwarter, A., Krystian, M., Sprengel, W. & Pippan, R., 2016.

Research output: Contribution to conference(Old data) Lecture or Presentation

High precision dilatometry as novel tool for in-situ-real-time monitoring of aging processes in Al alloys

Würschum, R., Luckabauer, M., Hengge, E., Klinser, G. & Sprengel, W., 2016.

Research output: Contribution to conference(Old data) Lecture or Presentation

2018

Erratum to: Lifetime of Positrons in Nanostructured Nonstoichiometric Silver Sulfide Ag2–δS (JETP Letters, (2018), 107, 1, (4-9), 10.1134/S0021364018010095)

Rempel, A. A., Sadovnikov, S. I., Klinser, G. & Sprengel, W., 1 Apr 2018, In : JETP letters. 107, 8, 1 p.

Research output: Contribution to journalComment/debate

Open Access

Lifetime of Positrons in Nanostructured Nonstoichiometric Silver Sulfide Ag2-δS

Rempel, A., Sadovnikov, S., Klinser, G. & Sprengel, W., 2018, In : JETP letters. 107, 1, p. 1-9

Research output: Contribution to journalArticle