28 Result(s)

Article

Role of Remelting in Grain Refinement of Undercooled Single-Phase Alloys

Bulk and thin samples of Cu₇₅Ni₂₅ (at. pct) alloy were solidified over a range of undercoolings. Unlike the bulk samples, in which grains were significantly refined at undercoolings between 45 K and 75 K, the thi...

L. Yang, L. J. Liu, Q. Y. Qin, J. F. Li in Metallurgical and Materials Transactions A (2022)

Article

Metastable Phase Formation and Its Transformation in Highly Undercooled Ni₇₅B₂₅ Alloy

Ni₇₅B₂₅ alloy was solidified at various undercooling. The formation and subsequent transformation of metastable Ni₂₃B₆ phase were clearly identified. If undercooling prior to nucleation is less than a critical va...

L. J. Liu, S. Y. Lu, Q. Y. Qin, L. Yang… in Metallurgical and Materials Transactions A (2022)

Article

Removal of acid orange II azo dyes using Fe-based metallic glass catalysts by Fenton-like process

The unique structural characteristics of metallic glasses make them highly qualified to be applied in the treatment of organic pollutants. In this work, the degradation of azo dyes in aqueous solutions by usin...

A. Lassoued, L. J. Liu, J. F. Li in Journal of Materials Science (2022)

Article

Preparation, characterization and application of Fe₇₂Cu₁Co₅Si₉B₁₃ metallic glass catalyst in degradation of azo dyes

The presence of pollutants such as azo dyes in industrial wastewaters has become a major global problem and has attracted a large number of researchers to find solutions. In present work, a new type of Fe-base...

A. Lassoued, J. F. Li in Journal of Materials Science: Materials in Electronics (2021)

Article

The Growth Pattern of Co₃Sn₂ in Directional Solidification of Co-Sn Hypereutectic Alloy Melts

Co₇₀Sn₃₀ hypereutectic alloy was directionally solidified at various velocities at temperature gradients of 200 and 300 K/cm. At a given temperature gradient, α-Co/β-Co₃Sn₂ lamellar eutectic grows with a planar i...

J. L. Kang, J. F. Li in Metallurgical and Materials Transactions A (2020)

Article

Compression Behavior of Biodegradable Thermoplastic Plasticizer-Containing Composites

Thermoplastic starch-based composites generate worldwide interest as they are based on green raw materials and undergo complete degradation. The composites were first fabricated from starch and sisal fibers as...

A. F. Guo, J. F. Li, F. Y. Li, J. Xu, C. W. Zhang, S. Chen in Strength of Materials (2019)

Article

Numerical Study of Failure Modes and Crack Propagation in 2A12 Aluminum Target Against Blunt-Nosed Projectile at Low Yaw Angle

Simulation models of 2A12 aluminum targets with thickness 1 mm stricken by the high strength 38CrSi blunt-nosed projectiles at different yaw angle have been established with the help of ABAQUS, then the failur...

Y. F. Deng, J. F. Li, B. H. Jia, G. Wei in Strength of Materials (2016)

Article

Metastable Co₂₃B₆ phase solidified from deeply undercooled Co_79.3B_20.7 alloy melt

M₂₃X₆ (M-transition metal, X-nonmetal) phases widely exist in alloy steels and some other multicomponent alloys, but were seldom solidified from binary alloys. In the present work, the alloy melt with the nominal...

X. X. Wei, W. Xu, J. L. Kang, M. Ferry, J. F. Li in Journal of Materials Science (2016)

Article

Contact transparency inducing low bias negative differential resistance in two capped carbon nanotubes sandwiching σ barrier

A first-principles study of the transport properties of two capped (5, 5) carbon nanotubes sandwiching σ barrier is reported. Contact transparency at zero bias is obtained. Strong negative differential resistance...

Y. Min, J. H. Fang, C. G. Zhong, Z. C. Dong, J. F. Li, K. L. Yao… in Applied Physics A (2015)

Article

Roles of alloying additions on local structure and glass-forming ability of Cu–Zr metallic glasses

To identify the structural role of alloying element M (M = Ti, Ga, Co, Fe) on the glass-forming ability (GFA) of Cu₅₀Zr₅₀ base alloy, the atomic structures of the binary and ternary metallic glasses were examined...

B. F. Lu, L. T. Kong, Z. Jiang, Y. Y. Huang, J. F. Li… in Journal of Materials Science (2014)

Article

Metal Flow during Friction Stir Welding of 7075-T651 Aluminum Alloy

Bronze foil of 0.1 mm thickness was placed between faying surfaces of two plates to be butt-welded as marker material to reveal the flow behavior of weld metal during friction stir welding of 7075-T651 aluminu...

W. -Y. Li, J. -F. Li, Z. -H. Zhang, D. -L. Gao, Y. -J. Chao in Experimental Mechanics (2013)

Article

Room-Temperature Nanoindentation Creep of Thermally Cycled Ultrasonically Bonded Heavy Aluminum Wires

Recent findings suggest that creep occurs during thermal cycling of ultrasonically bonded wires, the extent of which is influenced by the nature of the temperature cycle, particularly its peak temperature. In ...

P.A. Agyakwa, V.M.F. Marques, M.R. Corfield, J.F. Li… in Journal of Electronic Materials (2013)

Article

Effects of Cr addition on glass-forming ability and mechanical properties of Cu–Zr–Al bulk metallic glass

Effects of a small amount addition of Cr on glass-forming ability (GFA) and mechanical properties of Cu–Zr–Al bulk metallic glass were investigated. The GFA of (Cu₄₆Zr₄₆Al₈)_100−x Cr _...

W. Zhou, L. T. Kong, J. F. Li, Y. H. Zhou in Journal of Materials Science (2012)

Article

Microstructure and mechanical property of Zr₆₅Al_7.5Ni₁₀Cu_12.5Ag₅ bulk metallic glass subjected to rolling

The as-cast and the pre-annealed Zr₆₅Al_7.5Ni₁₀Cu_12.5Ag₅ bulk metallic glasses were rolled at room temperature to different deformation degrees, and the microstructure and microhardness were examined. It is reveal...

W. Zhou, Y. B. Guo, B. F. Lu, L. T. Kong, J. F. Li… in Journal of Materials Science (2012)

Article

A fixed-grid numerical modelling of transient liquid phase bonding and other diffusion-controlled phase changes

A transient liquid phase (TLP), in which a liquid layer is formed and subsequently solidifies, and other diffusion-controlled phase changes are generally associated with moving phase-change interfaces. Both fi...

J. F. Li, P. A. Agyakwa, C. M. Johnson in Journal of Materials Science (2010)

Article

Structure evolution of bulk Zr₆₀Cu₂₀Pd₁₀Al₁₀ amorphous alloy during rolling deformation

Bulk Zr₆₀Cu₂₀Pd₁₀Al₁₀ amorphous alloy was rolled at room temperature up to 96% reduction in thickness without fracture. The changes of microstructure and hardness during rolling deformation were investigated by X...

P. N. Zhang, J. F. Li, Y. Hu, Y. H. Zhou in Journal of Materials Science (2008)

Article

Structural Evidence for the Transition from Coupled to Decoupled Growth in the Solidification of Undercooled Ni-Sn Eutectic Melt

Ni-18.7 at. pct Sn eutectic melt was undercooled and spontaneously solidified in the encasement of a glass flux. Structure morphologies of the sample surface as well as inside the sample were systematically ex...

J.F. Li, W.Q. Jie, S. Zhao, Y.H. Zhou in Metallurgical and Materials Transactions A (2007)

Article

Direct evidence of substituent clustering in lower valent K⁺ modified PbZrO₃ by high-resolution Z-contrast imaging

The distribution of substituents in lead zirconate (PZ) modified by K⁺ (PKZ) has been studied by high-resolution Z-contrast imaging. Pronounced intensity variations were observed between various Pb columns, givin...

D. Viehland, J.F. Li, Z. Xu in Applied Physics A (2004)

Article

Indentation analysis of plasma-sprayed Cr₃C₂-NiCr coatings

J. F. Li, X. Y. Wang, H. Liao, C. X. Ding, C. Coddet in Journal of Materials Science (2004)