Search Results - "Dlouhy, A."

Influence of Ni on martensitic phase transformations in NiTi shape memory alloys by Frenzel, J., George, E.P., Dlouhy, A., Somsen, Ch, Wagner, M.F.-X., Eggeler, G.

“…High-precision data on phase transformation temperatures in NiTi, including numerical expressions for the effect of Ni on M S, M F, A S, A F and T 0, are…”
Get full text

Double minimum creep of single crystal Ni-base superalloys by Wu, X., Wollgramm, P., Somsen, C., Dlouhy, A., Kostka, A., Eggeler, G.

“…Low temperature (750 °C) and high stress (800 MPa) creep curves of single crystal superalloy ERBO/1 tensile specimens loaded in the 〈001〉 direction show two…”
Get full text

On the nature of γ′ phase cutting and its effect on high temperature and low stress creep anisotropy of Ni-base single crystal superalloys by Agudo Jácome, L., Nörtershäuser, P., Somsen, C., Dlouhý, A., Eggeler, G.

“…The creep anisotropy of the single crystal superalloy LEK 94 deformed in tension along [001] and [110] directions at 1293K and 160MPa was investigated…”
Get full text

On the multiplication of dislocations during martensitic transformations in NiTi shape memory alloys by Simon, T., Kröger, A., Somsen, C., Dlouhy, A., Eggeler, G.

“…In situ and post-mortem diffraction contrast transmission electron microscopy (TEM) was used to study the multiplication of dislocations during a thermal…”
Get full text

Evolution of local misorientations in the γ/γ’‐microstructure of single crystal superalloys during creep studied with the rotation vector baseline (RVB) EBSD method by Gamanov, Stepan, Dlouhy, A., Bürger, D., Eggeler, G., Thome, P.

“…The present work uses the rotation vector baseline electron back scatter orientation imaging method (RVB‐EBSD) to study the evolution of small misorientations…”
Get full text

On the nucleation of planar faults during low temperature and high stress creep of single crystal Ni-base superalloys by Wu, X., Dlouhy, A., Eggeler, Y.M., Spiecker, E., Kostka, A., Somsen, C., Eggeler, G.

“…The present work studies the nucleation of planar faults in the early stages of low temperature (750 °C) and high stress (800 MPa) creep of a Ni-base single…”
Get full text

Elementary martensitic transformation processes in Ni-rich NiTi single crystals with Ni4Ti3 precipitates by MICHUTTA, J, SOMSEN, Ch, YAWNY, A, DLOUHY, A, EGGELER, G

“…The present study shows that multiple-step martensitic transformations can be observed in aged Ni-rich NiTi single crystals. Ageing of solution-annealed and…”
Get full text

High-temperature and low-stress creep anisotropy of single-crystal superalloys by Agudo Jácome, L., Nörtershäuser, P., Heyer, J.-K., Lahni, A., Frenzel, J., Dlouhy, A., Somsen, C., Eggeler, G.

“…The high-temperature and low-stress creep (1293K, 160MPa) of the single-crystal Ni-based superalloy LEK 94 is investigated, comparing the tensile creep…”
Get full text

Ledges and grooves at γ/γ′ interfaces of single crystal superalloys by Parsa, A.B., Wollgramm, P., Buck, H., Kostka, A., Somsen, C., Dlouhy, A., Eggeler, G.

“…In the present work we study the formation of grooves and ledges (typical size: <100nm) at γ/γ′ interfaces of single crystal Ni-base superalloys. We highlight…”
Get full text

On the Stress-Induced Formation of R-Phase in Ultra-Fine-Grained Ni-Rich NiTi Shape Memory Alloys by Olbricht, J., Yawny, A., Pelegrina, J. L., Dlouhy, A., Eggeler, G.

“…Phase transformations in binary ultra-fine-grained (UFG) pseudoelastic NiTi wires were studied in a wide temperature range using mechanical loading/unloading…”
Get full text

Long-term creep and creep rupture characteristics of TiAl-base intermetallics by DLOUHY, A, KUCHAROVA, K, ORLOVA, A

“…The present study investigates creep in three TiAl-base intermetallic alloys, Ti–48Al–2Cr–2Nb–1B, Ti–46Al–7Nb–0.6Cr–0.2Ni–0.1Si and Ti–46Al–2W–0.5Si–0.7B (all…”
Get full text

Decomposition of the single-phase high-entropy alloy CrMnFeCoNi after prolonged anneals at intermediate temperatures by Otto, F., Dlouhý, A., Pradeep, K.G., Kuběnová, M., Raabe, D., Eggeler, G., George, E.P.

“…Among the vast number of multi-principal-element alloys that are referred to as high-entropy alloys (HEAs) in the literature, only a limited number solidify as…”
Get full text

On Shear Testing of Single Crystal Ni-Base Superalloys by Eggeler, G., Wieczorek, N., Fox, F., Berglund, S., Bürger, D., Dlouhy, A., Wollgramm, P., Neuking, K., Schreuer, J., Agudo Jácome, L., Gao, S., Hartmaier, A., Laplanche, G.

“…Shear testing can contribute to a better understanding of the plastic deformation of Ni-base superalloy single crystals. In the present study, shear testing is…”
Get full text

The influences of temperature and microstructure on the tensile properties of a CoCrFeMnNi high-entropy alloy by Otto, F., Dlouhý, A., Somsen, Ch, Bei, H., Eggeler, G., George, E.P.

“…An equiatomic CoCrFeMnNi high-entropy alloy, which crystallizes in the face-centered cubic (fcc) crystal structure, was produced by arc melting and drop…”
Get full text

Analysis of strengthening due to grain boundaries and annealing twin boundaries in the CrCoNi medium-entropy alloy by Schneider, M., George, E.P., Manescau, T.J., Záležák, T., Hunfeld, J., Dlouhý, A., Eggeler, G., Laplanche, G.

“…CrCoNi exhibits the best combination of strength and ductility among all the equiatomic single-phase FCC subsets of the CrMnFeCoNi high-entropy alloy. Here,…”
Get full text

Ni4Ti3 precipitate structures in Ni-rich NiTi shape memory alloys by Holec, D., Bojda, O., Dlouhý, A.

“…Non-uniform distributions of Ni4Ti3 precipitate crystallographic variants are investigated in a Ni-rich NiTi shape memory alloy after aging, assisted by…”
Get full text

3D Discrete Dislocation Dynamics: Influence of Segment Mobility on Critical Shear Stress by Záležák, T., Dlouhý, A.

Get full text

On the presence of work-hardened zones around fibers in a short-fiber-reinforced Al metal matrix composite by Kurumlu, D., Payton, E.J., Somsen, Ch, Dlouhy, A., Eggeler, G.

“…Dislocation densities are investigated in a short-fiber-reinforced Al–11wt.% Zn–0.2wt.% Mg metal matrix composite (MMC) with a special focus on regions near…”
Get full text

Direct transmission electron microscopy observations of martensitic transformations in Ni-rich NiTi single crystals during in situ cooling and straining by Kröger, A., Dziaszyk, S., Frenzel, J., Somsen, Ch, Dlouhy, A., Eggeler, G.

“…We investigate martensitic transformations using transmission electron microscopy (TEM) in compression aged Ni-rich NiTi single crystals with one family of Ni…”
Get full text

On the influence of heterogeneous precipitation on martensitic transformations in a Ni-rich NiTi shape memory alloy by Khalil-Allafi, J, Eggeler, G, Dlouhy, A, Schmahl, W.W, Somsen, Ch

“…Recently, a new explanation was given for the evolution of DSC chart features after ageing of Ni-rich NiTi alloys. It was shown that the 2–3–2 evolution of DSC…”
Get full text