J
Jan Frenzel
Researcher at Ruhr University Bochum
Publications - 136
Citations - 6069
Jan Frenzel is an academic researcher from Ruhr University Bochum. The author has contributed to research in topics: Shape-memory alloy & Diffusionless transformation. The author has an hindex of 36, co-authored 128 publications receiving 4924 citations. Previous affiliations of Jan Frenzel include Chemnitz University of Technology & Dalian Institute of Chemical Physics.
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Journal ArticleDOI
Influence of Ni on martensitic phase transformations in NiTi shape memory alloys
Jan Frenzel,Easo P. George,Easo P. George,A. Dlouhy,Ch. Somsen,Martin F.-X. Wagner,Gunther Eggeler +6 more
TL;DR: In this article, the authors show how carbon affects martensitic transformations in Ni-rich NiTi shape memory alloys and provide new experimental evidence for increasing temperature intervals between the start and the end of the martenitic transformations (from B2 to B19′) with increasing C content in as-cast and solution-annealed microstructures.
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Generalized Fabrication of Nanoporous Metals (Au, Pd, Pt, Ag, and Cu) through Chemical Dealloying
TL;DR: In this paper, the length scale of ligaments/channels in these nanoporous metals is associated with surface diffusion of more noble atoms, and increases with increasing diffusion coefficients in sequence: Pt/Pd < Au < Ag < Cu.
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Identification of Quaternary Shape Memory Alloys with Near‐Zero Thermal Hysteresis and Unprecedented Functional Stability
Robert Zarnetta,Ryota Takahashi,Ryota Takahashi,Marcus L. Young,Alan Savan,Yasubumi Furuya,Sigurd Thienhaus,Burkhard Maaß,Mustafa Rahim,Jan Frenzel,Hayo Brunken,Yong S. Chu,Yong S. Chu,Vijay Srivastava,Richard D. James,Ichiro Takeuchi,Gunther Eggeler,Alfred Ludwig +17 more
TL;DR: In this article, the lattice parameters of quaternary shape memory alloys and the thermal hysteresis were tailored by using a thin-film composition-spread technique and high-throughput characterization methods.
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On the effect of alloy composition on martensite start temperatures and latent heats in Ni–Ti-based shape memory alloys
TL;DR: In this paper, the concentration dependence of the martensite start temperature (M S ) in Ni-Ti-based shape memory alloys (SMAs) was investigated and it was shown that the strong dependence of M S on alloy composition in binary, ternary and quaternary SMAs is due to a stabilization of the B2 phase by structural relaxations around Ni antisite atoms.
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On the development of high quality NiTi shape memory and pseudoelastic parts by additive manufacturing
TL;DR: In this paper, the additive manufacturing process affects structural and functional properties of additively manufactured NiTi and how the process parameter set-up can be optimized to produce high quality NiTi parts and components.