Zobrazeno 1 - 10
of 95
pro vyhledávání: '"Robert Maass"'
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-9 (2024)
Abstract Glassy solids evolve towards lower-energy structural states by physical aging. This can be characterized by structural relaxation times, the assessment of which is essential for understanding the glass’ time-dependent property changes. Con
Externí odkaz:
https://doaj.org/article/23d613c9803b4e779a3cf251565750b0
Publikováno v:
Materials Research Letters, Vol 12, Iss 5, Pp 346-354 (2024)
Extended X-ray absorption fine structure (EXAFS) conducted on an equiatomic MoNbTaW bcc medium-entropy alloy that was annealed at 2273 K reveals unexpectedly small 1st and 2nd shell element-specific lattice distortions. An experimental size-mismatch
Externí odkaz:
https://doaj.org/article/a5af9170bf2240fda1bfe9a24b63ad76
Autor:
Adnan Fareed, Julian M. Rosalie, Sourabh Kumar, Satyakam Kar, Tilmann Hickel, Sebastian Fähler, Robert Maaß
Publikováno v:
Materials & Design, Vol 233, Iss , Pp 112259- (2023)
Ni-Mn-Ga shape-memory alloys are promising candidates for large strain actuation and magnetocaloric cooling devices. In view of potential small-scale applications, we probe here nanomechanically the stress-induced austenite–martensite transition in
Externí odkaz:
https://doaj.org/article/1aa11523324a4023b407e7bdb953c7b3
Autor:
Birte Riechers, Catherine Ott, Saurabh Mohan Das, Christian H. Liebscher, Konrad Samwer, Peter M. Derlet, Robert Maaß
Publikováno v:
Materials & Design, Vol 229, Iss , Pp 111929- (2023)
Metallic glasses (MGs) are known to be structurally heterogeneous at the nanometer (nm) scale. In addition, elastic property mapping has indicated the presence of at least an order-of-magnitude larger length scales, of which the origin continues to r
Externí odkaz:
https://doaj.org/article/2f549548fd1e468f907507b321a280b7
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-9 (2019)
Thermal annealing of metallic glasses is known to cause a universal increase of the relaxation time with sample age. Here, however, the authors show how a mechanical stress disrupts this universal response, leading to highly non-monotonous structural
Externí odkaz:
https://doaj.org/article/519cb045de8d496da0b41c80fb4ca64a
Autor:
Amlan Das, Catherine Ott, Dinesh Pechimuthu, Robabeh Moosavi, Mihai Stoica, Peter M. Derlet, Robert Maaß
Publikováno v:
Physical Review Materials. 7
Metallic glasses are known to have a remarkably robust yield strength, admitting Weibull moduli as high as for crystalline engineering alloys. However, their post-yielding behavior is strongly varying, with large scatter in both flow stress levels an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::51a088d22e538adacd495f5f47f86ee9
https://doi.org/10.1103/physrevmaterials.7.023602
https://doi.org/10.1103/physrevmaterials.7.023602
Autor:
Robert Maass, Peter Michael Derlet
Publikováno v:
Physical Review Materials. 6
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9054f516e9ebbefc35b025de735166ed
https://doi.org/10.1103/physrevmaterials.6.125604
https://doi.org/10.1103/physrevmaterials.6.125604
Autor:
Johanna Christiane Sänger, Brian Richard Pauw, Birte Riechers, Andrea Zocca, Julian Rosalie, Robert Maaß, Heinz Sturm, Jens Günster
Filigree structures can be manufactured via two-photon-polymerization (2PP) operating in the regime of non-linear light absorption. For the first time it is possible to apply this technique to the powder processing of ceramic structures with a featur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c492bce5461cae72c380aef1c36a74d5
Publikováno v:
Scripta Materialia. 190:126-130
Lamellar eutectics are known to evidence plastic shear in otherwise brittle intermetallics, if the lamella spacing is small enough. Here we pursue this idea of confined plasticity in intermetallics further and demonstrate room-temperature shear-defor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a89ccef9319e7362b2e198b02cbf5ac7
https://doi.org/10.1016/j.scriptamat.2020.08.033
https://doi.org/10.1016/j.scriptamat.2020.08.033