Geometry of needle-like microstructures in shape-memory alloys

S Conti, M Lenz, M Rumpf, J Verhülsdonk… - Shape Memory and …, 2023 - Springer
Needle-like microstructures are often observed in shape memory alloys near macro-
interfaces that separate regions with different laminate orientation. We study their shape with …

Evolution of phases and their influence on shape memory effect by varying sintering parameters of NiTi alloys

SK Patel, A Behera - Metals and Materials International, 2022 - Springer
NITINOL is the most popular and economic shape memory alloy (SMA) used in various
industries. For temperature associated applications, the shape memory effect (SME) is the …

Microstructure of macrointerfaces in shape-memory alloys

S Conti, M Lenz, M Rumpf, J Verhülsdonk… - Journal of the …, 2023 - Elsevier
Shape-memory alloys exhibit a rich microstructure, characterized by large regions
containing relatively regular laminates mixing different martensitic variants. Macrointerfaces …

[HTML][HTML] Energy and morphology of martensite–twinned martensite interface in CuAlNi shape memory alloy: A phase-field study

S Amini, M Rezaee-Hajidehi, S Stupkiewicz - Computational Materials …, 2023 - Elsevier
Needle-like twins are observed experimentally within the transition layer at the martensite–
twinned martensite interface. We utilize a phase-field approach to investigate this …

Solving nonconvex energy minimization problems in martensitic phase transitions with a mesh-free deep learning approach

X Chen, P Rosakis, Z Wu, Z Zhang - Computer Methods in Applied …, 2023 - Elsevier
In this paper, we propose a novel mesh-free method for solving nonconvex energy
minimization problems for martensitic phase transitions and twinning in crystals using the …

The tapering length of needles in martensite/martensite macrotwins

S Conti, B Zwicknagl - Archive for Rational Mechanics and Analysis, 2023 - Springer
We study needle formation at martensite/martensite macro interfaces in shape-memory
alloys. We characterize the scaling of the energy in terms of the needle tapering length and …

A deep learning approach to nonconvex energy minimization for martensitic phase transitions

X Chen, P Rosakis, Z Wu, Z Zhang - arXiv preprint arXiv:2206.13937, 2022 - arxiv.org
We propose a mesh-free method to solve nonconvex energy minimization problems for
martensitic phase transitions and twinning in crystals, using the deep learning approach …

Temporally and spatially resolved characterization of Martensitic transformation induced in AISI 347 steel by thermo-mechanical fatigue loads

V Lyamkin - 2023 - publikationen.sulb.uni-saarland.de
This work focuses on the kinetics behind the phase transformation process from γ austenite
to α′ martensite under isothermal and thermo-mechanical fatigue (TMF) conditions. The …

Mechanics of Materials: Multiscale Design of Advanced Materials and Structures

S Forest, D McDowell, S Müller, E Werner - Oberwolfach Reports, 2024 - ems.press
Materials can now be designed and architectured like structural components for targeted
mechanical and physical properties. Structures and microstructures should not be studied …