Results 51 to 60 of about 33,276 (223)

Influence of intermartensitic transitions on transport properties of Ni2.16Mn0.84Ga alloy

, 2004
Magnetic, transport, and x-ray diffraction measurements of ferromagnetic shape memory alloy Ni$_{2.16}$Mn$_{0.84}$Ga revealed that this alloy undergoes an intermartensitic transition upon cooling, whereas no such a transition is observed upon subsequent ...
Andrianov A, Brown P J, C Wedel, Chernenko V A, Chernenko V A, Fawcett E, Gonzàlez-Comas A, Inoue K, K Oikawa, K Sugiyama, Khovailo V V, Kokorin V V, Kokorin V V, Lu X, Martynov V V, Murayama S, Otsuka K, T Abe, T Takagi, Takagi T, V V Khovailo, Vasil?ev A N, Vasil?ev A N, Webster P J, Wedel C, Zhao G-L, Zheludev A, Zuo F   +27 more
core   +1 more source

Design of a Cobalt‐Free Maraging Steel with Ultra‐High Strength of 2.3 GPa Through Additive Manufacturing

Advanced Science, EarlyView.
A computationally designed, cobalt‐free maraging steel tailored for additive manufacturing achieves an ultra‐high tensile strength of 2.3 GPa with 5.7% elongation. This exceptional strength‐ductility synergy stems from high‐density core‐shell Ni3Ti/NiAl nanoprecipitates, a crack‐resistant composition, and a fine equiaxed grain structure enabled by ...
Hu Li, Shubo Gao, Liming Tan, Weiming Ji, Liuliu Han, Kun Zhou, Yong Liu   +6 more
wiley   +1 more source

Visualizing Strain‐Coupled Cryogenic Phase Transitions and Defect Dynamics in Perovskite Quantum Dots Using In Situ STEM

Advanced Science, EarlyView.
Cryogenic cooling induces an orthorhombic‐to‐monoclinic phase transition in CsPbBr3 quantum dots, accompanied by pronounced strain localization at surfaces and interfaces. Multimodal in situ STEM directly visualize reversible defect healing during moderate cryogenic treatment and irreversible degradation upon prolonged exposure, revealing the intrinsic
Xinjuan Li, Zhao Jiang, Si Chen, Yi Tang, Bofeng Xue, Tianhao Wu, Yang Lu, Xavier Moya, Akshay Rao, Zhongzheng Yu, Caterina Ducati   +10 more
wiley   +1 more source

A TEM, STEM and backscattered electron channeling imaging study of martensite formation in Co-19.6Fe [PDF]

, 1986
A high purity, C-free Co-19.6Fe alloy is shown to undergo a variety of martensitic and bainitic reactions. TEM, STEM and back-scattered electron channelling patterns and images have been used to study the effects of ageing at temperatures below the α ...
Payne, S. M.
core  

Disorder-Driven Pretransitional Tweed in Martensitic Transformations

, 1995
Defying the conventional wisdom regarding first--order transitions, {\it solid--solid displacive transformations} are often accompanied by pronounced pretransitional phenomena.
A. Bradley, A. D. Bruce, A. E. Jacobs, A. H. Heuer, A. H. Heuer, A. Heiming, A. M. Bratkovsky, C. S. Becquart, C. Zener, D. De Fontaine, D. Schryvers, E. Salje, F. Falk, G. R. Barsch, G. R. Barsch, G. R. Speich, H. Sompolinsky, I. M. Robertson, I. M. Robertson, I. M. Robertson, I. S. Sokolnokoff, J. A. Krumhansl, J. L. Ericksen, J. P. Sethna, J. Van Tendeloo, James A. Krumhansl, James P. Sethna, K. Binder, K. Parlinski, K. Parlinski, K. Yosuda, L. D. Landau, L. E. Tanner, L. E. Tanner, L. E. Tanner, L. K. Wickham, L. Tanner, L.-Q. Chen, M. A. Krovglaz, M. Baus, M. Mezard, M. Sato, M. Wuttig, P. F. Gobin, R. Oshima, S. Kartha, S. Muto, S. Muto, S. Muto, S. Semenovskaya, S. Semenovskaya, S. Semenovskaya, Sivan Kartha, T. Krekels, T. Krekels, T. Onozuko, W. Cochran, W. Cochran, W. Cochran, W. W. Schmahl, X. Jiang, Y. Imry, Y. Xu, Y. Zhu, Y. Zhu   +64 more
core   +1 more source

NiTi shape-memory transformations: minimum-energy pathways between austenite, martensites, and kinetically-limited intermediate states [PDF]

, 2014
NiTi is the most used shape-memory alloy, nonetheless, a lack of understanding remains regarding the associated structures and transitions, including their barriers.
Johnson, Duane, Johnson, Duane, Zarkevich, Nikolai, Zarkevich, Nikolai   +3 more
core   +4 more sources

Orientation‐Dependent Phase Transformation Pathways Enabling Superior Superelastic and Elastocaloric Performance of NiTi Alloys

Advanced Science, EarlyView.
By integrating simulations and experiments, the preferred (001) crystallographic texture promotes reversible martensite formation through variant selection, enhancing both superelastic and elastocaloric performance. This work provides fundamental guidelines for designing high‐efficiency NiTi‐based functional materials. Abstract Developing elastocaloric
Jiaqi Lu, Muhammad Aziz, Hao Li, Chi Zhang, Zhifeng Huang, Fei Chen   +5 more
wiley   +1 more source

Terahertz-induced martensitic transformation in partially stabilized zirconia

Communications Physics, 2023
Martensitic crystal structures are usually obtained by rapid thermal quenching of certain alloys, which induces stress and subsequent shear deformation. Here, we demonstrate that it is also possible to intentionally excite a suitable transverse acoustic ...
Masaya Nagai, Yuhei Higashitani, Masaaki Ashida, Koichi Kusakabe, Hirohiko Niioka, Azusa N. Hattori, Hidekazu Tanaka, Goro Isoyama, Norimasa Ozaki   +8 more
doaj   +1 more source

Work hardening behavior of hot-rolled metastable Fe50Co25Ni10Al5Ti5Mo5 medium-entropy alloy: in situ neutron diffraction analysis

Science and Technology of Advanced Materials, 2022
Metastability engineering is a strategy to enhance the strength and ductility of alloys via deliberately lowering phase stability and prompting deformation-induced martensitic transformation. The advantages of the strategy are widely exploited by ferrous
Hyeonseok Kwon, Stefanus Harjo, Takuro Kawasaki, Wu Gong, Sang Guk Jeong, Eun Seong Kim, Praveen Sathiyamoorthi, Hidemi Kato, Hyoung Seop Kim   +8 more
doaj   +1 more source

Structure and Giant Inverse Magnetocaloric Effect of Epitaxial Ni-Co-Mn-Al Films

, 2015
The structural, magnetic, and magnetocaloric properties of epitaxial Ni-Co-Mn-Al thin films with different compositions have been studied. The films were deposited on MgO(001) substrates by co-sputtering on heated substrates. All films show a martensitic
Behler, Anna, Boehnke, Alexander, Dincer, Ilker, Elerman, Yalcin, Helmich, Lars, Hütten, Andreas, Klimova, Svetlana, Kucza, Daniel, Teichert, Niclas, Waske, Anja, Weise, Bruno, Yildirim, Oguz, Yüzüak, Ercument   +12 more
core   +1 more source