Results 41 to 50 of about 243 (119)

Room‐temperature dislocation plasticity in ceramics: Methods, materials, and mechanisms

Journal of the American Ceramic Society, Volume 108, Issue 9, September 2025.
Abstract Dislocation‐mediated plastic deformation in ceramic materials has sparked renewed research interest due to the technological potential of dislocations. Despite the long research history of dislocations as one‐dimensional lattice defects in crystalline solids, the understanding of plastically deformable ceramics at room temperature seems ...
Alexander Frisch, Chukwudalu Okafor, Oliver Preuß, Jiawen Zhang, Katsuyuki Matsunaga, Atsutomo Nakamura, Wenjun Lu, Xufei Fang   +7 more
wiley   +1 more source

In situ studies on temperature‐dependent deformation mechanisms of Al2O3 prepared by spark plasma sintering

Journal of the American Ceramic Society, Volume 108, Issue 6, June 2025.
Abstract Alumina (α‐Al2O3) is one of the most versatile engineering ceramics, and its mechanical properties have been extensively studied. However, the micromechanical properties of Al2O3 with a fine microstructure are less well understood. Here, we present one of the first investigations that probe the micromechanical properties of fine‐grained ...
Chao Shen, Tongjun Niu, Jaehun Cho, Tianyi Sun, Anyu Shang, Yifan Zhang, Haiyan Wang, Xinghang Zhang   +7 more
wiley   +1 more source

Actuated Hydrogel Platforms To Study Brain Cell Behavior

Advanced Healthcare Materials, Volume 14, Issue 10, April 15, 2025.
The complex and dynamic viscoelastic properties of the brain underpin neural plasticity and overall function. Actuating hydrogel platforms support mechanistic research to elucidate how brain cells respond to dynamic microenvironments. This study reviews the mechanobiology of the brain and its impact on brain function in health and disease and describes
Kirill E. Zhurenkov, Darren Svirskis, Bronwen Connor, Jenny Malmström   +3 more
wiley   +1 more source

Mechanism of Fatigue Crack Closure in Steel Under High‐Density Pulsed Current

Fatigue &Fracture of Engineering Materials &Structures, Volume 48, Issue 4, Page 1879-1892, April 2025.
ABSTRACT This study is aimed at clarifying the mechanism of effectively healing fatigue cracks in steel; austenitic stainless steel, SUS304; and hot work tool steel, SKD61, using high‐density pulsed current. The results show that the current concentration occurred at the crack tip for SUS304, and crack closure was observed near the fatigue crack tip ...
Shota Nakayama, Yutaro Sugeno, Tomoto Kambayashi, Atsushi Hosoi, Yuichi Furukawa, Takashi Tomita, Hiroyuki Kawada   +6 more
wiley   +1 more source

Mechanical tailoring of dislocations in ceramics at room temperature: A perspective

Journal of the American Ceramic Society, Volume 107, Issue 3, Page 1425-1447, March 2024.
Abstract The potential of dislocations (line defects) in ceramics may have been greatly underrated until most recently. Promising proofs‐of‐concept have been demonstrated for dislocation‐tuned functional and mechanical properties, revealing a new research front for dislocations in ceramics for a wide range of potential applications.
Xufei Fang
wiley   +1 more source

Electroplasticity and Electromigration

, 1994
It is known that an electric current can interact with dislocations in metals. Recent studies suggest that these interactions include current-induced dislocation motion and multiplication (electroplasticity) through both glide and climb mechanisms.
Eduard Arzt, Shefford P. Baker, Michael P. Knauss, Ulrich E. Möckl   +3 more
core   +1 more source

A forming anisotropy CPFEM model of superalloys electroplasticity based on conductivity tensor

Materials & Design
Electro-assisted forming (EAF) was widely applied for forming thin-walled superalloy components. However, temperature, stress, dislocation, and Taylor factor are affected under different current loading directions and amplitudes, which remains ...
Rui Zhao, Changke Li, Jiuxing Zhao, Bao Meng, Min Wan   +4 more
doaj   +1 more source

Mechanical Properties of 7075-T6 Aluminum Alloy in Electrically Assisted Forming

Metals
The coupling effects of electrical pulse, temperature, strain rate, and strain on the flow behavior and plasticity of 7075-T6 aluminum alloy were investigated and characterized.
Shasha Dou, Zhuang Liu, Zhijun Li, Haojie Shi, Kang Zhou, Jiansheng Xia   +5 more
doaj   +1 more source

Deformation behavior and its mechanism of Al–Zn–Mg–Cu alloys in different heat treatment states under electrically-assisted uniaxial tension

Journal of Materials Research and Technology
Electrically-assisted manufacturing has proven to be an efficient process in improving formability for metal alloys. However, there are relatively few studies on the mechanism of the deformation behavior of Al–Zn–Mg–Cu alloys in different heat-treated ...
Yanli Song, Long Chen, Chuanchuan Hao, Hainan Xu, Lin Hua, Jue Lu, Lechun Xie, Qian Sun   +7 more
doaj   +1 more source

COMPARISON OF THE EFFECT OF ELECTROPLASTICITY IN COPPER AND ALUMINUM [PDF]

The effect of electroplasticity (EE) is used to increase the deformability of metals and alloys, save the energy used to deform them, and reduce tool wear.
Tarov, Danila V., Semenov, Alexander S., Yakushev, Ilya A., Morkina, Alina Y., Dmitriev, Sergey V., Khalikova, Gulnara R., Tatarinov, Pavel S.   +6 more
core   +2 more sources