Zobrazeno 1 - 10
of 216
pro vyhledávání: '"Sebastian Fähler"'
Publikováno v:
Materials Today Advances, Vol 20, Iss , Pp 100441- (2023)
The martensitic microstructure decides on the functional properties of shape memory alloys. However, for the most commonly used alloy, NiTi, it is still unclear how its microstructure is built up because the analysis is hampered by grain boundaries o
Externí odkaz:
https://doaj.org/article/54d21f79eddf43fb9181288ffea5ea6b
Publikováno v:
Science and Technology of Advanced Materials, Vol 24, Iss 1 (2023)
ABSTRACTDuring cooling, conventional martensitic transformation can only be realized from austenite to martensite. Recently, a so-called reentrant martensitic transformation attracted much interest due to an additional transformation from martensite
Externí odkaz:
https://doaj.org/article/c859d24b70114d8b8e73e2d9d7a54f8a
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:
Stefan Schwabe, Klara Lünser, Daniel Schmidt, Kornelius Nielsch, Peter Gaal, Sebastian Fähler
Publikováno v:
Science and Technology of Advanced Materials, Vol 23, Iss 1, Pp 633-641 (2022)
Structural martensitic transformations enable various applications, which range from high stroke actuation and sensing to energy efficient magnetocaloric refrigeration and thermomagnetic energy harvesting. All these emerging applications benefit from
Externí odkaz:
https://doaj.org/article/7a5391383bd442cbaee91116789a85b9
Autor:
Klara Lünser, Bruno Neumann, Daniel Schmidt, Yuru Ge, Daniel Hensel, Mallika Khosla, Peter Gaal, Sebastian Fähler
Publikováno v:
JPhys Materials, Vol 7, Iss 4, p 045007 (2024)
Martensitic transformations enable various emerging applications like the shape memory effect and elastocaloric applications in NiTi. Increasing the speed of this transformation can shorten the response time for actuation and increase the power densi
Externí odkaz:
https://doaj.org/article/7d572332437d43f3a5b1c0c91113ae13
Publikováno v:
Science and Technology of Advanced Materials, Vol 22, Iss 1, Pp 643-657 (2021)
A thermomagnetic generator is a promising technology to harvest low-grade waste heat and convert it into electricity. To make this technology competitive with other technologies for energy harvesting near room temperature, the optimum thermomagnetic
Externí odkaz:
https://doaj.org/article/456707aa87624d38ae8377254ec59800
Publikováno v:
JPhys Materials, Vol 6, Iss 3, p 035002 (2023)
Understanding the martensitic microstructure in nickel–titanium (NiTi) thin films helps to optimize their properties for applications in microsystems. Epitaxial and single-crystalline films can serve as model systems to understand the microstructur
Externí odkaz:
https://doaj.org/article/f882eb0d029c4d5cb79a0cd6bf969196
Publikováno v:
Materials, Vol 13, Iss 17, p 3674 (2020)
Magnetocaloric materials based on field-induced first order transformations such as Ni-Mn-Ga-Co are promising for more environmentally friendly cooling. Due to the underlying martensitic transformation, a large hysteresis can occur, which in turn red
Externí odkaz:
https://doaj.org/article/1ad68bda91cc4cbbb70074925c13e5b0
Autor:
Lars Helmich, Marianne Bartke, Niclas Teichert, Benjamin Schleicher, Sebastian Fähler, Andreas Hütten
Publikováno v:
AIP Advances, Vol 7, Iss 5, Pp 056429-056429-5 (2017)
We report on the preparation of Gadolinium thin films by means of sputter deposition on Silicon Oxide wafers. A series of samples with different buffer layers and various substrate temperatures has been produced. The film on an amorphous Tantalum buf
Externí odkaz:
https://doaj.org/article/c1d9905c8b8f4fd98d191002b3c21dbd
Autor:
Sebastian Fähler, Ludwig Schultz, Jens Freudenberger, Robert Niemann, Alexander Kauffmann, Sandra Kauffmann-Weiss
Publikováno v:
Metals, Vol 3, Iss 4, Pp 319-336 (2013)
Twinning is a phenomenon that occurs, e.g., during deformation, martensitic transformation and film growth. The present study shows that the crystallography of twinning can be described by two twinning modes along the complete Bain transformation pat
Externí odkaz:
https://doaj.org/article/7e324bce253f45f4a66106df927e436d