Nicolas Karpstein

2026

• Kuglstatter M., Karpstein N., Apeleo Zubiri B., Wu M., Fecher J., Spiecker E., Höppel HW., Göken M.:
  Microstructural evolution and B2 ordering in a new CuPdAgRu alloy
  In: Scripta Materialia 272 (2026), Article No.: 117053
  ISSN: 1359-6462
  DOI: 10.1016/j.scriptamat.2025.117053
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2025

• Bezold A., Egan A., Völkl J., Karpstein N., Gaag T., Spiecker E., Göken M., Mills MJ., Neumeier S.:
  Localized phase transformation strengthening in CoNi-based superalloys
  In: Scripta Materialia 254 (2025), Article No.: 116312
  ISSN: 1359-6462
  DOI: 10.1016/j.scriptamat.2024.116312
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• Karpstein N., Laplanche G., Saksena A., Zehl R., Bezold A., Horst OM., Bürger D., Kostka A., Zenk C., Neumeier S., Gault B., Ludwig A., Fries SG., Spiecker E.:
  Microscopic mechanism of the L12–D019 phase transformation in a Co-base single crystal superalloy
  In: Acta Materialia 282 (2025), Article No.: 120416
  ISSN: 1359-6454
  DOI: 10.1016/j.actamat.2024.120416
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• Létang M., Schmitt J., Sohn YJ., Sebold D., Karpstein N., Spiecker E., Kostka A., Guillon O., Vaßen R.:
  Challenges of single-crystal CMSX-4 repair using cold spray
  In: Surface & Coatings Technology 513 (2025), Article No.: 132368
  ISSN: 0257-8972
  DOI: 10.1016/j.surfcoat.2025.132368
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• Rigas N., Zieroth H., Karpstein N., Spiecker E., Merklein M.:
  Ultrasound-assisted in-situ characterization of precipitation kinetics for tailoring mechanical properties in high-strength aluminum components
  In: Journal of Materials Processing Technology 346 (2025), Article No.: 119107
  ISSN: 0924-0136
  DOI: 10.1016/j.jmatprotec.2025.119107
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• Will J., Denisov N., Qin S., Wu M., Wang Y., Kim H., Karpstein N., Dierner M., Schmuki P., Spiecker E.:
  Thermally-induced agglomeration tailors the stability of Pt SAs on TiO2 and use in photocatalytic H2 generation
  In: Journal of Materials Chemistry A (2025)
  ISSN: 2050-7488
  DOI: 10.1039/d5ta00843c
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2024

• Bezold A., Vollhüter J., Karpstein N., Lenz M., Subramanyam AP., Zenk C., Hammerschmidt T., Spiecker E., Göken M., Neumeier S.:
  Segregation-induced strength anomalies in complex single-crystalline superalloys
  In: Communications Materials 5 (2024), Article No.: 8
  ISSN: 2662-4443
  DOI: 10.1038/s43246-024-00447-x
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• Karpstein N., Wu M., Bezold A., Neumeier S., Cormier J., Spiecker E.:
  Temperature and Time Dependence of Elemental Segregation at Stacking Faults in Ni- and Co-Base Superalloys
  15th International Symposium on Superalloys, ISS 2024 (Champion, PA, USA, September 8, 2024 - September 12, 2024)
  In: Jonathan Cormier, Ian Edmonds, Stephane Forsik, Paraskevas Kontis, Corey O’Connell, Timothy Smith, Akane Suzuki, Sammy Tin, Jian Zhang (ed.): Minerals, Metals and Materials Series 2024
  DOI: 10.1007/978-3-031-63937-1_47
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2023

• Bezold A., Amon L., Karpstein N., Spiecker E., Göken M., Neumeier S.:
  Recovery of superlattice stacking faults at high temperatures
  In: Scripta Materialia 222 (2023), Article No.: 115005
  ISSN: 1359-6462
  DOI: 10.1016/j.scriptamat.2022.115005
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• Karpstein N., Lenz M., Bezold A., Wu M., Neumeier S., Spiecker E.:
  Reliable identification of the complex or superlattice nature of intrinsic and extrinsic stacking faults in the L12 phase by high-resolution imaging
  In: Acta Materialia 260 (2023), Article No.: 119284
  ISSN: 1359-6454
  DOI: 10.1016/j.actamat.2023.119284
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• Vollhüter J., Bezold A., Karpstein N., Köbrich M., Spiecker E., Göken M., Neumeier S.:
  Strain Rate-Dependent Anomalous Work Hardening of a Single-Crystalline CoNi-Base Superalloy
  In: Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science (2023)
  ISSN: 1073-5623
  DOI: 10.1007/s11661-023-06966-5
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2022

• Bezold A., Volz N., Lenz M., Karpstein N., Zenk C., Spiecker E., Göken M., Neumeier S.:
  Quantification of the temperature-dependent evolution of defect structures in a CoNi-base superalloy
  In: Acta Materialia 227 (2022), Article No.: 117702
  ISSN: 1359-6454
  DOI: 10.1016/j.actamat.2022.117702
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2021

• Volz N., Zenk C., Karpstein N., Lenz M., Spiecker E., Göken M., Neumeier S.:
  Creep properties and deformation mechanisms of single-crystalline gamma '-strengthened superalloys in dependence of the Co/Ni ratio
  In: Philosophical Magazine (2021)
  ISSN: 1478-6435
  DOI: 10.1080/14786435.2021.2017051
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2020

• Schrenker N., Xie Z., Schweizer P., Moninger M., Werner F., Karpstein N., Mackovic M., Spyropoulos G., Göbelt M., Christiansen SH., Brabec C., Bitzek E., Spiecker E.:
  Microscopic Deformation Modes and Impact of Network Anisotropy on the Mechanical and Electrical Performance of Five-fold Twinned Silver Nanowire Electrodes
  In: ACS nano (2020), Article No.: acsnano.0c06480
  ISSN: 1936-0851
  DOI: 10.1021/acsnano.0c06480
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2019

• Schrenker N., Schweizer P., Moninger M., Karpstein N., Mackovic M., Spyropoulos G., Göbelt M., Christiansen S., Brabec C., Spiecker E.:
  Mechanical and Electrical Failure of Silver Nanowire Electrodes: A Scale Bridging In Situ Electron Microscopy Study
  In: Microscopy and Microanalysis 25 (2019)
  ISSN: 1431-9276
  DOI: 10.1017/S1431927619010924
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2015

• Peukert W., Meric Z., Mehringer C., Jank M., Frey L., Karpstein N.:
  Tunable conduction type of solution-processed germanium nanoparticle based field effect transistors and their inverter integration
  In: Physical Chemistry Chemical Physics 17 (2015), p. 22106-22114
  ISSN: 1463-9076
  DOI: 10.1039/c5cp03321g
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