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Three novel precipitation strengthened bcc alloys which exhibit a smooth microstructural gradient with composition have been fabricated in bulk form by induction casting. All three alloys are comprised of a mixture of disordered A2-(Fe, Cr)…

材料科学 · 物理学 2021-03-23 Silas Wolff-Goodrich , Sebastian Haas , Uwe Glatzel , Christian Liebscher

The secondary phase, such as Ni$_3$Al-based $L1_2$ $\gamma^\prime$, is crucially important for precipitation strengthening of superalloys. Composition-structure-property relations provide useful insights for guided alloy design. Here we use…

材料科学 · 物理学 2023-06-22 Nikolai A. Zarkevich , Timothy M. Smith , John W. Lawson

Ternary C_{x}N_{y}O_{z} compounds are actively researched as novel high energy density and ultrahard materials. Although some synthesis work has been performed at ambient conditions, very little is known about the high pressure chemistry of…

材料科学 · 物理学 2017-10-11 Brad A. Steele , Ivan I. Oleynik

In the present work, the ideal shear strength ({\tau}_is) of dilute Ni34XZ ternary alloys (X or Z = Al, Co, Cr, Fe, Mn, Mo, Nb, Si, Ti) are predicted by first-principles calculations based on density functional theory (DFT) in terms of pure…

材料科学 · 物理学 2024-12-12 Shuang Lin , Shun-Li Shang , John D. Shimanek , Yi Wang , Allison M. Beese , Zi-Kui Liu

Superconductor research has traditionally depended on experiments and theoretical approaches. However, the rapid advancement of data-driven methods and machine learning (ML) has opened avenues for accelerating superconductor discovery.…

超导电性 · 物理学 2025-09-04 Xiaoying Li , Wenqian Tu , Run Lv , Li'e Liu , Dingfu Shao , Yuping Sun , Wenjian Lu

Considering the recent breakthroughs in the synthesis of novel two-dimensional (2D) materials from layered bulk structures, ternary layered transition metal borides, known as MAB phases, have come under scrutiny as a means of obtaining…

The discovery of novel quantum materials within ternary phase spaces containing antagonistic pair such as Fe with Bi, Pb, In, and Ag, presents significant challenges yet holds great potential. In this work, we investigate the stabilization…

Metal superhydrides, known for their high hydrogen content and polyhedral hydrogen cages, are promising candidates for high-temperature superconductivity. Recent research has emphasized "chemical pre-compression," enabling hydrogen…

超导电性 · 物理学 2025-03-06 Yuanhui Sun , Maosheng Miao

We search for new superhard B-N-O compounds with an iterative machine learning (ML) procedure, where ML models are trained using sample crystal structures from evolutionary algorithm. We first use cohesive energy to evaluate the…

材料科学 · 物理学 2022-06-22 Wei-Chih Chen , Yogesh K. Vohra , Cheng-Chien Chen

Cerium-based intermetallics have garnered significant research attention as potential new permanent magnets. In this study, we explore the compositional and structural landscape of Ce-Co-Cu ternary compounds using a machine learning…

材料科学 · 物理学 2025-02-07 Weiyi Xia , Wei-Shen Tee , Paul Canfield , Rebecca Flint , Cai-Zhuang Wang

Motivated by the recent discovery of near-room temperature superconductivity in high-pressure superhydrides, we investigate from first-principles the high-pressure superconducting phase diagram of the ternary Ca-B-H system, using ab-initio…

超导电性 · 物理学 2020-08-26 Simone Di Cataldo , Wolfgang von der Linden , Lilia Boeri

While lean Mg-Zn-Ca alloys are promising materials for temporary implants, questions remain on the impact of Zn and Ca. In this context, the precipitation in Mg-1.5Zn-0.25Ca (ZX20, in wt.%) was investigated upon linear heating from about…

Exploratory synthesis in novel chemical spaces is the essence of solid-state chemistry. However, uncharted chemical spaces can be difficult to navigate, especially when materials synthesis is challenging. Nitrides represent one such space,…

The high strength of structural aluminium alloys depends strongly on the controlled precipitation of specific intermetallic phases, whose identity and crystal structure can be difficult to predict. Here, we investigate the Al-Pt system,…

材料科学 · 物理学 2023-06-14 Shenghan Su , Laure Bourgeois , Nikhil V. Medhekar

Technetium, element 43, is the only radioactive transition metal. It occurs naturally on earth in only trace amounts. Experimental investigation of its possible compounds is thus inherently difficult and limited. Half of the…

材料科学 · 物理学 2013-08-28 Ohad Levy , Junkai Xue , Shidong Wang , Gus L. W. Hart , Stefano Curtarolo

The recently discovered quaternary arsenide oxide superconductor La[O1-xFx]FeAs with the superconducting critical transition temperature (Tc) of 26 K [1], has been quickly expanded to another high-Tc superconducting system beyond copper…

Additively manufactured (AM) aluminum alloys with high strength and thermal stability have broad applications in turbine engines, vacuum pumps, heat exchangers, and many other industrial systems. Employing precipitates with an L1$_2$…

Group I/II materials exhibit unexpected structural phase transitions at high pressures, providing potential insight into the origins of elemental superconductivity. We present here a computational study of elemental barium and binary…

材料科学 · 物理学 2012-07-16 Joshua A. Taillon , William W. Tipton , Richard G. Hennig

Aims: Aluminium is a key element to constrain the models of the chemical enrichment and the yields of the first supernovae. But obtaining precise Al abundances in extremely metal-poor (EMP) stars requires that the non-LTE effects be…

天体物理学 · 物理学 2009-11-13 S. M. Andrievsky , M. Spite , S. A. Korotin , F. Spite , P. Bonifacio , R. Cayrel , V. Hill , P. François

MAX phases are nanolaminated ternary materials that combine metallic and ceramic properties. Currently, the A-site elements replacement in traditional ones by later transition-metals opens a door to explore new types of MAX phases. In this…

材料科学 · 物理学 2021-11-25 Erxiao Wu , Yiming Zhang , Mian Li , Youbing Li , Kan Luo , Shiyu Du , Qing Huang