Stapelfehler

Kristall- und Gitterdefekte

Gitterfehler (Faults) in kristallinen Werkstoffen

Optische Beugungsgitter in der Werkstoff- und Strukturoptik

Stapelfehler

Stapelfehler sind planare Gitterfehlstellen in dichtest gepackten Strukturen (z.B. fcc, hcp), bei denen die reguläre Stapelfolge von Netzebenen lokal gestört ist. Ihre Energie beeinflusst Verformungsmechanismen wie Zwillingsbildung, Versetzungsquergleiten und Ausscheidungsmorphologie. Eine niedrige Stapelfehlerenergie fördert mechanisches Zwillingen und TRIP/TWIP-Effekte in Stählen, während hohe Werte zur Versetzungsgleitdominierten Verformung führen. Sie sind zentral für das mechanische Design von Leichtmetallen und Hoch-Mn-Stählen.

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Neue Inhalte

Highlight Lecture

Dislocation-mediated non-basal plasticity in topologically close-packed phases

Xie, Z. (Speaker)¹; Freund, M.¹; Luo, W.¹; Gasper, C.¹; Sun, P.-L.¹; Zhang, S.²; Korte-Kerzel, S.¹

The critical role of Nb, Ta, Ti and W on the creep resistance of CoNi-based superalloys

Völkl, J. (Speaker)¹; Bezold, A.¹; Egan, A.¹; Karpstein, N.¹; Spiecker, E.¹; Göken, M.¹; Mills, M.J.²; Neumeier, S.¹

Highlight Lecture

Towards Enhancing Local Phase Transformation Strengthening via χ in Ni- and Co-based Superalloys Using Thermodynamically Driven Design

Egan, A.J. (Speaker)¹; Feng, L.²; Bezold, A.¹; Völkl, J.¹; Amon, L.¹; Wang, Y.³; Mills, M.J.³; Neumeier, S.¹; Spiecker, E.¹; Göken, M.¹

Machine learning interatomic potential to investigate thermodynamic and kinetic properties of (Ag,Cu)GaSe$_2$ solar cell absorbers

Karanikolas, V. (Speaker)¹; Perera, D. (Speaker)¹; Erhard, L.¹; Albe, K.¹

Highlight Lecture

Strengthening and toughening high-entropy materials via metastability engineering: new advances

Li, Z. (Speaker)¹

DFT prediction of a new inversion boundary structure in Sb‐doped ZnO

Ribić, V. (Speaker)¹; Rečnik, A.¹; Komelj, M.¹; Kokalj, A.¹; Branković, Z.²; Zlatović, M.³; Branković, G.²

FEMS EUROMAT 2023

Insight into the structural evolution and deformation behaviors of Cu-based nanocrystalline alloys via atomic resolution study

Zhang, Z. (Speaker)¹; Guo, J.²

FEMS EUROMAT 2023

Highlight Lecture

Characterization of plasticity in steels by Electron Channeling Contrast Imaging (ECCI) and Transmission Forescattered Electron Imaging (t-FSEI)

Gutierrez-Urrutia, I. (Speaker)¹; Shibata, A.¹

FEMS EUROMAT 2023

Planar gliding and vacancy condensation: The role of dislocations in the chemomechanical degradation of layered transition metal oxides

Sadowski, M. (Speaker)¹; Albe, K.¹; Sicolo, S.²

FEMS EUROMAT 2023

Keynote Lecture

Twinning and antitwinning in body-centered cubic metals

Gröger, R. (Speaker)¹; Holzer, J.¹; Kruml, T.¹

FEMS EUROMAT 2023

Beliebte Inhalte

Machine learning interatomic potential to investigate thermodynamic and kinetic properties of (Ag,Cu)GaSe$_2$ solar cell absorbers

Karanikolas, V. (Speaker)¹; Perera, D. (Speaker)¹; Erhard, L.¹; Albe, K.¹

Keynote Lecture

Solute Segregation, Segregation Transition and Localized Phase Transformation at Interfaces and Stacking Faults

Wang, Y. (Speaker)¹

Deformation mechanisms rationalisation to design for creep resistance in polycrystalline Ni-based superalloys

Barba, D. (Speaker)¹; Egan, A.²; Gong, Y.³; Mazanova, V.²; Mills, M.J.²; Reed, R.C.¹; Tang, Y.¹; Utada, S.¹

EuroSuperalloys 2022 - 4th European Symposium on Superalloys and their Applications

Plenary Lecture

High strength dilute Mg alloys prepared by rapid solidification

Drozdenko, D. (Speaker)¹; Dobroň, P.¹; Inoue, S.-i.²; Kawamura, Y.²; Lukáč, P.¹; Máthis, K.¹; Nisimoto, S.²; Yamasaki, M.²

Quantification of the temperature and strain rate dependent evolution of defect structures in a CoNi-base superalloy

Bezold, A. (Speaker)¹; Göken, M.¹; Karpstein, N.¹; Lenz, M.¹; Neumeier, S.¹; Spiecker, E.¹; Vollhüter, J.¹

Strukturänderungen im Kobalt-Mischkristall durch fräsende Bearbeitung

H. Podlesak, C. Gläser, B. Wielage, D. Hösel, and R. Neugebauer...

Highlight Lecture

Towards Enhancing Local Phase Transformation Strengthening via χ in Ni- and Co-based Superalloys Using Thermodynamically Driven Design

Egan, A.J. (Speaker)¹; Feng, L.²; Bezold, A.¹; Völkl, J.¹; Amon, L.¹; Wang, Y.³; Mills, M.J.³; Neumeier, S.¹; Spiecker, E.¹; Göken, M.¹

Highlight Lecture

Dislocation-mediated non-basal plasticity in topologically close-packed phases

Xie, Z. (Speaker)¹; Freund, M.¹; Luo, W.¹; Gasper, C.¹; Sun, P.-L.¹; Zhang, S.²; Korte-Kerzel, S.¹

Insight into the structural evolution and deformation behaviors of Cu-based nanocrystalline alloys via atomic resolution study

Zhang, Z. (Speaker)¹; Guo, J.²

FEMS EUROMAT 2023

Keynote Lecture

Unravelling dislocation motion in intermetallics with nanomechanics, high resolution microscopy and atomistic simulations

Korte-Kerzel, S. (Speaker)¹; Aliramaji, S.¹; Andre, D.¹; Freund, M.¹; Gasper, C.¹; Guénolé, J.²; Sandlöbes-Haut, S.¹; Scheu, C.³; Schneider, J.¹; Springer, H.¹; Sun, P.-L.¹; Tanure, L.¹; Xie, Z.¹; Zhang, S.³

Tensile Deformation in Single Crystal Superalloys: The Effect of Strain Rate

Rae, C. (Speaker)¹

EuroSuperalloys 2022 - 4th European Symposium on Superalloys and their Applications

Intrinsic room temperature ductilisation of rare-earth free ternary micro alloyed Mg alloys

Delis, W. (Speaker)¹; Hallstedt, B.¹; Huckfeldt, P.¹; Korte-Kerzel, S.¹; Raabe, D.²; Sandlöbes-Haut, S.¹

The critical role of Nb, Ta, Ti and W on the creep resistance of CoNi-based superalloys

Völkl, J. (Speaker)¹; Bezold, A.¹; Egan, A.¹; Karpstein, N.¹; Spiecker, E.¹; Göken, M.¹; Mills, M.J.²; Neumeier, S.¹

Theoretical and experimental investigation of deformation in Immm-Ni2(Cr,Mo,W) strengthened HAYNES® 244® alloy

Mann, T. (Speaker)¹; Fahrmann, M.²; Titus, M.¹

EuroSuperalloys 2022 - 4th European Symposium on Superalloys and their Applications

Deformation mechanisms in complex polycrystalline CoNiCr-base superalloys – influence of temperature, strain-rate and chemistry

Bezold, A. (Speaker)¹; Freund, L.¹; Göken, M.¹; Neumeier, S.¹; Völkl, J.¹

EuroSuperalloys 2022 - 4th European Symposium on Superalloys and their Applications

Slip and deformation behavior in intermetallic Cobalt-Samarium phases

Stollenwerk, T. (Speaker)¹; Gutfleisch, O.²; Korte-Kerzel, S.¹; Shayanfar, N.²; Skokov, K.²; Sun, P.-L.¹; Xie, Z.¹

Planar gliding and vacancy condensation: The role of dislocations in the chemomechanical degradation of layered transition metal oxides

Sadowski, M. (Speaker)¹; Albe, K.¹; Sicolo, S.²

FEMS EUROMAT 2023

Highlight Lecture

Characterization of plasticity in steels by Electron Channeling Contrast Imaging (ECCI) and Transmission Forescattered Electron Imaging (t-FSEI)

Gutierrez-Urrutia, I. (Speaker)¹; Shibata, A.¹

FEMS EUROMAT 2023

DFT prediction of a new inversion boundary structure in Sb‐doped ZnO

Ribić, V. (Speaker)¹; Rečnik, A.¹; Komelj, M.¹; Kokalj, A.¹; Branković, Z.²; Zlatović, M.³; Branković, G.²

FEMS EUROMAT 2023

Intermediate formation of hexagonal phase in Mn3Ga under the influence of an external magnetic field

Kirste, G. (Speaker)¹; Büchner, B.¹; Freudenberger, J.¹; Werner, J.¹; Wurmehl, S.¹

Comparison of creep mechanisms between Co-Al-W- and CoNi-based single crystal superalloys at low temperature and high stresses

Lu, S. (Speaker)¹; Feng, Q.¹; Li, L.¹; Luo, Z.¹

EuroSuperalloys 2022 - 4th European Symposium on Superalloys and their Applications

Low-temperature defect structures in single-crystal Ni-based superalloys

Miller, J. (Speaker)¹; Rae, C.¹

EuroSuperalloys 2022 - 4th European Symposium on Superalloys and their Applications

Oral-Poster-Presentation

Temperature-dependent thermodynamics of elemental segregation at stacking faults in Ni- and Co-base superalloys

Karpstein, N. (Speaker)¹; Bezold, A.¹; Cormier, J.²; Lenz, M.¹; Neumeier, S.¹; Spiecker, E.¹; Wu, M.¹

EuroSuperalloys 2022 - 4th European Symposium on Superalloys and their Applications

Highlight Lecture

Strengthening and toughening high-entropy materials via metastability engineering: new advances

Li, Z. (Speaker)¹

Keynote Lecture

Twinning and antitwinning in body-centered cubic metals

Gröger, R. (Speaker)¹; Holzer, J.¹; Kruml, T.¹

FEMS EUROMAT 2023

High-resolution imaging of complex and superlattice stacking faults in the $L1_2$ structure

Karpstein, N. (Speaker)¹; Bezold, A.¹; Göken, M.¹; Lenz, M.¹; Neumeier, S.¹; Spiecker, E.¹; Wu, M.¹

EuroSuperalloys 2022 - 4th European Symposium on Superalloys and their Applications

Temperature-dependent cyclic deformation behavior of CoCrFeMnNi with comparison to CoCrNi

Lu, K. (Speaker)¹; Aktaa, J.¹; Chauhan, A.¹; Litvinov, D.¹

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