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Author

  • Wolfgang Sprengel

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

A method for improved 4D-computed tomography data acquisition

Kupper, M., Sprengel, W., Winkler, P. & Zurl, B., 2017, In : Zeitschrift für medizinische Physik. 27, 1, p. 31-38

Research output: Contribution to journalArticle

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

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

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

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

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

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

Defect investigations of an ironnickel meteorite

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

Research output: Contribution to conferencePoster

Defects and Charging Processes in Li-Ion Battery Cathodes Studied by Operando Magnetometry and Positron Anihilation

Würschum, R., Topolovec, S., Klinser, G., Sprengel, W., Kren, H., Koller, S., Krenn, H., Hugenschmidt, C., Reiner, M., Gigl, T., Berkermeier, F. & Fiedler, M., 2017, In : Materials Science Forum. 879, p. 2125-2130

Research output: Contribution to journalArticle

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

Defects in an iron-nickel meteorite examined with positrons

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

Research output: Contribution to conferencePoster

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

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

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

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

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 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

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

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

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

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

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

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

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

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

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

Open Access

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

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

Identification of different positron trapping sites during artificial aging of a commercial light weight alloy

Resch, L., Klinser, G., Sprengel, W. & Würschum, R., 27 Dec 2019, The 18th International Conference on Positron Annihilation (ICPA-18): AIP Conference Proceedings . Vol. 2182. p. 050012-1 - 050012-4 4 p. (AIP Conference Proceedings).

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

Open Access

Improvement of the TLD dose calculation by application of an individual residual dose correction

Wilding, G., Stadtmann, H. & Sprengel, W., 4 Apr 2017, In : Radiation Measurements. 106, p. 273-277

Research output: Contribution to journalArticle

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

In Situ Real-Time Monitoring of Aging Processes in an Aluminum Alloy by High-Precision Dilatometry

Luckabauer, M., Hengge, E., Klinser, G., Sprengel, W., Würschum, R. & Solanki, K. N. (ed.), 2017, Magnesium Technology 2017: The Minerals, Metals & Materials Series (2017). p. 669-674 6 p.

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

Internal stress and defect-related free volume in submicrocrystalline Ni studied by neutron diffraction and difference dilatometry

Kotzurek, J., Hofmann, M., Simic, S., Pölt, P., Hohenwarter, A., Pippan, R., Sprengel, W. & Würschum, R., 2017, In : Philosophical magazine (London) / Letters. 97, 11, p. 450-458

Research output: Contribution to journalArticle

Open Access
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

Methodik zur verbesserten Datenerfassung bei der 4D-Computertomographie

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

Research output: Contribution to conferencePoster

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

Recent progress in dilatometry for quantitative analysis of precipitation kinetics

Würschum, R., Enzinger, R. J., Hengge, E. & Sprengel, W., 2019, 40th Risø International Symposium on Material Science: IOP Conf. Series: Materials Science and Engineering. Vol. 580. (IOP Conference Series / Materials Science and Engineering).

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