Results 71 to 80 of about 25,521 (248)

Influence of Doping Tb on the Mechanical Properties and Martensitic Transformation of Ni-Mn-Sn Magnetic Shape Memory Alloys

Crystals, 2018
Brittleness and low working temperature are two key factors that restrict the application of Ni-Mn-Sn alloys. Element doping is an effective means to improve performance of materials.
Xiaohua Tian, Kun Zhang, Changlong Tan, Erjun Guo   +3 more
doaj   +1 more source

Elastic and thermodynamic properties of the shape-memory alloy AuZn

, 2001
The current work reports on the elastic shear moduli, internal friction, and the specific heat of the B2 cubic ordered alloy AuZn as a function of temperature. Measurements were made on single-crystal and polycrystalline samples using Resonant Ultrasound
A. Migliori, B. E. Lang, B. F.Woodfield, D. J. Thoma, F. Chu, J. Boerio-Goates, J. C. Lashley, M. Lopez, T. W. Darling   +8 more
core   +1 more source

Designing High‐Entropy Alloys With Low Stacking Fault Energy Through Interpretable Machine Learning

Materials Genome Engineering Advances, EarlyView.
In this study, we developed an interpretable machine learning (ML) ensemble framework and, by integrating the VEC criterion with the proposed machine learning scoring parameter in the alloy composition screening process, successfully designed multiple CoCrFeNiMn‐based HEAs with TWIP/TRIP effects and without the BCC phase.
Shuai Nie, Yixuan He, Haoxiang Liu, Xudong Liu, Haifeng Wang, Ziqing He, Menghao Yang   +6 more
wiley   +1 more source

Martensitic transformation of pure iron at a grain boundary: Atomistic evidence for a two-step Kurdjumov-Sachs–Pitsch pathway

AIP Advances, 2016
Using classical molecular dynamics simulations and the Meyer-Entel interaction potential, we study the martensitic transformation pathway in a pure iron bi-crystal containing a symmetric tilt grain boundary.
Jerome Meiser, Herbert M. Urbassek
doaj   +1 more source

Precursor Phenomena of Martensitic Phase Transformation

Materials Transactions, JIM, 1992
The unique aspect of martensitic transformation is pointed out to lie in coexistence of apparently contradictory features of «non-locality» and «discreteness» during the ordering process. As a remarkable manifestation of this unique feature, the precursor phenomenon called «ghost lattice effect» observed in X-ray diffraction experiments is discussed ...
openaire   +2 more sources

The Dependence of Properties on Structural Features in Macro/Micro Levels for PBF‐LB Fabricated Porous NiTi Alloy

Rare Metals, EarlyView.
ABSTRACT Porous NiTi alloys are widely used in biomedical and engineering fields. Using the PBF‐LB technique, the TPMS and Voronoi porous parts with a porosity of ∼67% and a minimum feature size of 0.15 ± 0.02 mm were fabricated. Although the bulk sample fabricated with the same parameters is defect‐free, μ‐CT reconstruction on the porous sample ...
Wen‐Hao Zeng, Yang Yang, Xing‐Rong Chu, Yang Zou, Ren‐Zhou Deng, Ke Huang, Philippe Castany, Thierry Gloriant   +7 more
wiley   +1 more source

Topology and Martensitic Phase Transformations

Triply periodic minimal surfaces (TPMS) are discovered to conform to surfaces of given charge density distributions embedded in crystals [Z. Kristallogr. \textbf{170}, 138 (1985)]. Based on our previous work [Phys. Rev. Mater. \textbf{9}, 073802 (2025)], we discovered that crystals can have surfaces of a given charge density converging to TPMS. We also
Yin, M., Vvedensky, D. D.
openaire   +2 more sources

Twin‐Wire In Situ Additive Manufacturing of NiTiNb Eutectic Alloys: Eliminating Unmelted Nb Particles and Tailored Superelasticity

Rare Metals, EarlyView.
ABSTRACT A major challenge in fabricating eutectic NiTiNb alloys is the incomplete melting of Nb due to its much higher melting point than the NiTi matrix. In this work, a novel electron‐beam freeform additive manufacturing strategy is developed to eliminate unmelted Nb particles and achieve a fully eutectic structure through independent dual‐wire ...
Qing‐Da Zhang, Bao‐Xian Su, Chen Liu, Zhe Li, Zhi‐Wen Li, Meng‐Hao Zhong, Bao Ding, Rui‐Run Chen, Liang Wang, Yan‐Qing Su   +9 more
wiley   +1 more source

Temperature driven $\alpha$ to $\beta$ phase-transformation in Ti, Zr and Hf from first principles theory combined with lattice dynamics

, 2011
Lattice dynamical methods used to predict phase transformations in crystals typically deal with harmonic phonon spectra and are therefore not applicable in important situations where one of the competing crystal structures is unstable in the harmonic ...
, , Arapan S., Chureemart J., Cochran W., Katsnelson M. I., Landau L. D., Lenosky T. J., M. I. Katsnelson, O. Eriksson, P. Souvatzis, S. Arapan, Souvatzis P.   +12 more
core   +1 more source

Development of 4D printing and its performance testing methods

Responsive Materials, EarlyView.
This paper reviews the molding methods of 4D printing and its applications in various fields, with emphasis on 4D printing performance testing methods. Abstract 4D printing is a cutting‐edge additive manufacturing technology that introduces the time dimension, allowing printed objects to have dynamic, changeable properties, functions or shapes ...
Guiwei Li, Chaoyue Huang, Yucheng Luo, Jialu Xu, Lei Zhang, Fei Gao, Ke Li, Wenzheng Wu, Luquan Ren   +8 more
wiley   +1 more source