Zhefeng Zhang

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Academic Career Length

29Years (1998-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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28 February 2024 in Nature

Journal Article

High fatigue resistance in a titanium alloy via near-void-free 3D printing

Zhan Qu

Zhenjun Zhang

Rui Liu

Ling Xu

Yining Zhang

Zhefeng Zhang

+10

7 March 2005 in Physical Review Letters

Journal Article

Unified Tensile Fracture Criterion

Zhefeng Zhang

Jürgen Eckert

We find that the classical failure criteria, i.e., maximum normal stress criterion, Tresca criterion, Mohr-Coulomb criterion, and von Mises criterion, cannot satisfactorily explain the tensile fracture behavior of the bulk metallic glass (BMG) materials. For a better description, we propose an ellipse criterion as a new failure criterion to unify the four classical criteria above and apply it to exemplarily describe the tensile fracture behavior of BMGs as well as a variety of other materials. It is suggested that each of the classical failure criteria can be unified by the present ellipse criterion depending on the difference of the ratio

α = τ_{0} / σ_{0}

6 June 2022 in Nature Communications

Journal Article

On the damage tolerance of 3-D printed Mg-Ti interpenetrating-phase composites with bioinspired architectures

Ning Zhao

Bioinspired architectures are effective in enhancing the mechanical properties of materials, yet are difficult to construct in metallic systems. The structure-property relationships of bioinspired metallic composites also remain unclear. Here, Mg-Ti composites were fabricated by pressureless infiltrating pure Mg melt into three-dimensional (3-D) printed Ti-6Al-4V scaffolds. The result was composite materials where the constituents are continuous, mutually interpenetrated in 3-D space and exhibit specific spatial arrangements with bioinspired brick-and-mortar, Bouligand, and crossed-lamellar architectures. These architectures promote effective stress transfer, delocalize damage and arrest cracking, thereby bestowing improved strength and ductility than composites with discrete reinforcements. Additionally, they activate a series of extrinsic toughening mechanisms, including crack deflection/twist and uncracked-ligament bridging, which enable crack-tip shielding from the applied stress and lead to “Γ”-shaped rising fracture resistance R-curves. Quantitative relationships were established for the stiffness and strengths of the composites by adapting classical laminate theory to incorporate their architectural characteristics.

8 May 2020 in Science Advances

Journal Article

3D printed Mg-NiTi interpenetrating-phase composites with high strength, damping capacity, and energy absorption efficiency

Mingyang Zhang

Qin Yu

Zengqian Liu

Jian Zhang

Guoqi Tan

Robert O. Ritchie

A 3D printed magnesium alloy with an interpenetrating NiTi phase shows remarkable strength, damping, and self-healing properties.

1 October 2005 in Philosophical Magazine Letters

Journal Article

Effect of aspect ratio on the compressive deformation and fracture behaviour of Zr-based bulk metallic glass

Zhefeng Zhang

H. Zhang

X. F. Pan

JAYANTA DAS

Jürgen Eckert

The compressive deformation and fracture features of Zr₅₉Cu₂₀Al₁₀Ni₈Ti₃ bulk metallic glassy samples with aspect ratios in the range of 0.67–2.00 have been investigated. The compressive plastic strain of the glass monotonically increases with decreasing aspect ratio, but the maximum strength almost maintains a constant value of 1.77–1.88 GPa. All the compressive shear-band angles are equal to ∼40° if modified by the rotation of the primary shear bands.

3 April 2014 in Fatigue & Fracture of Engineering Materials & Structures

Journal Article

Relations between fatigue strength and other mechanical properties of metallic materials

Jianchao Pang

S. X. Li

Z. G. Wang

Zhefeng Zhang

About Me

Prof. Dr. Zhefeng Zhang received a doctor's degree from the Institute of Metals, Chinese Academy of Sciences. From 2000 to 2001, he was a research fellow funded by the Japan Society for the Promotion of Science (JSPS) at the Japan Institute of Industrial Technology. From 2001 to 2003, he was a Humboldt scholar at the Leibniz Institute of Solid Materials in Germany. From January to December 2003, he was a visiting scholar at the Stuttgart Max Planck Institute of Metals in Germany. In 2004, he returned to work at the Institute of Metals, Chinese Academy of Sciences. He served as a member of the International Committee on Strength (ICSMA), a member of the International Committee on Metal Mechanical Fatigue (ICMFM), a director of the Chinese Society for Materials Research, Secretary General/Director of the Fatigue Branch of the Chinese Society for Materials Research, Deputy Director/Executive Director of the Youth Committee of the Chinese Society for Materials Research. He received honors and awards such as the National Talent Program, National Hundred and Ten Million Talents Project "Outstanding Contribution Young Expert", and Chinese Highly Cited Scholar. His research interests include the mechanical behavior of metal materials, strengthening and toughening mechanisms, fatigue damage and life prediction, fracture mechanisms, and strength theory.

Zhefeng Zhang

Zhefeng Zhang

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About Me