Search Results - "Sehitoglu, H"

Elastocaloric cooling capacity of shape memory alloys – Role of deformation temperatures, mechanical cycling, stress hysteresis and inhomogeneity of transformation by Wu, Y., Ertekin, E., Sehitoglu, H.

“…Elastocaloric (EC) effect refers to the rapid cooling in shape memory alloys (SMAs) during reverse transformation from martensite to austenite under adiabatic…”
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Mechanisms of fatigue crack growth - a critical digest of theoretical developments by Chowdhury, P., Sehitoglu, H.

“…ABSTRACT Recent advances in the processing technology are permitting the manufacture of novel metallic materials with superior fatigue properties via…”
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Hardening by slip-twin and twin-twin interactions in FeMnNiCoCr by Bönisch, M., Wu, Y., Sehitoglu, H.

“…To enhance strain hardening of alloys beyond levels accessible by forest hardening slip-twin interactions and twin-twin interactions have been proposed. The…”
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Slip nucleation in single crystal FeNiCoCrMn high entropy alloy by Patriarca, L., Ojha, A., Sehitoglu, H., Chumlyakov, Y.I.

“…We present an experimental and theoretical study of slip nucleation in high entropy FeNiCoCrMn alloy which possesses superb mechanical properties. Uniaxial…”
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Twinning stress in shape memory alloys: Theory and experiments by Wang, J., Sehitoglu, H.

“…Utilizing first-principles atomistic simulations we present a twin nucleation model based on the Peierls–Nabarro formulation. We investigated twinning in…”
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Strain hardening and heterogeneous deformation during twinning in Hadfield steel by Efstathiou, C., Sehitoglu, H.

“…We identify the role of deformation twinning and twin–twin intersections on the strain hardening behavior of Hadfield steel single crystals using strain field…”
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Dislocation core effects on slip response of NiTi- a key to understanding shape memory by Alkan, S., Sehitoglu, H.

“…The understanding of the non-Schmid behavior in shape memory alloy NiTi is considered a significant breakthrough because this alloy still remains enigmatic. We…”
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Martensite modulus dilemma in monoclinic NiTi-theory and experiments by Wang, J., Sehitoglu, H.

“…•Elastic moduli of martensitic NiTi in twinned and detwinned states are determined using DFT.•Elastic moduli simulations of detwinned martensite shows…”
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Nano-twinning enhanced room temperature fatigue crack growth in single crystalline CoCrFeMnNi high entropy alloy by Sidharth, R., Abuzaid, W., Sehitoglu, H.

“…The equiatomic high entropy alloy CoCrFeMnNi is known for its unique strain hardening behavior which extends to cryogenic temperatures and gives remarkable…”
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Predicting twinning stress in fcc metals: Linking twin-energy pathways to twin nucleation by Kibey, S., Liu, J.B., Johnson, D.D., Sehitoglu, H.

“…Deformation twinning is observed in numerous engineering and naturally occurring materials. However, a fundamental law for critical twinning stress has not yet…”
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Experimental determination of latent hardening coefficients in FeMnNiCoCr by Wu, Y., Bönisch, M., Alkan, S., Abuzaid, W., Sehitoglu, H.

“…The equi-atomic FeMnNiCoCr high entropy alloy is attracting unprecedented attention due to its exceptional strain hardening behavior extending to large strains…”
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Twinning-induced strain hardening in dual-phase FeCoCrNiAl0.5 at room and cryogenic temperature by Bönisch, M., Wu, Y., Sehitoglu, H.

“…A face-centered-cubic (fcc) oriented FeCoCrNiAl 0.5 dual-phase high entropy alloy (HEA) was plastically strained in uniaxial compression at 77K and 293K and…”
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Multiscale strain measurements of plastically deforming polycrystalline titanium: Role of deformation heterogeneities by Efstathiou, C., Sehitoglu, H., Lambros, J.

“…The purpose of this work was to characterize the spatial distribution of residual deformation at the mesoscale (a few grains) and at the macroscale (hundreds…”
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Mechanical response of low stacking fault energy Co–Ni alloys – Continuum, mesoscopic and atomic level treatments by Chowdhury, P., Sehitoglu, H., Abuzaid, W., Maier, H.J.

“…Low stacking fault energy fcc alloys deform via either mechanical twinning or dislocation slip. A single crystal poses an excellent avenue to studying inherent…”
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Fatigue crack propagation in [0 1 2] NiTi single crystal alloy by Sgambitterra, E., Maletta, C., Furgiuele, F., Sehitoglu, H.

“…•Fatigue crack propagation tests on NiTi single crystal alloy were carried out.•DIC technique was used to catch the near crack tip displacement…”
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Dislocation slip and twinning in Ni-based L12 type alloys by Wang, J., Sehitoglu, H.

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Transformation stress of shape memory alloy CuZnAl: Non-Schmid behavior by Alkan, S., Wu, Y., Ojha, A., Sehitoglu, H.

“…We establish an atomistically-informed model for predicting the non-Schmid behavior of critical stresses for bcc to orthorhombic (L21 to 18R) martensitic…”
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On the negative strain rate sensitivity of Hadfield steel by Canadinc, D., Efstathiou, C., Sehitoglu, H.

“…The room temperature strain rate sensitivity of Hadfield steel polycrystals was investigated with the aid of in situ digital image correlation. The current…”
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The complexity of non-Schmid behavior in the CuZnAl shape memory alloy by Alkan, S., Ojha, A., Sehitoglu, H.

“…•A predictive theoretical framework for non-Schmid glide in CuZnAl is established.•Dislocation core disregistry distribution is shown to govern on glide…”
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Nonuniqueness of the fatigue threshold by Alkan, S., Sehitoglu, H.

“…Fatigue threshold variation with grain boundary structure, grain size and initial dislocation density. [Display omitted] •A model is developed to characterize…”
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