Results 41 to 50 of about 9,369,954 (130)

Dislocation response to electric fields in strontium titanate: A mesoscale indentation study

Journal of the American Ceramic Society, Volume 109, Issue 1, January 2026.
Abstract Dislocations in perovskite oxides have drawn increasing research interest due to their potential for tuning functional properties of electroceramics. Open questions remain regarding the stability of dislocations under strong externally applied electric fields. In this study, we investigate the dielectric breakdown strength of nominally undoped
Alexander Frisch, Daniel Isaia, Oliver Preuß, Xufei Fang   +3 more
wiley   +1 more source

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

Current-carrying friction of Ag coatings by additive manufacturing: uncovering the role of electric current

Materials Research Letters
Ag coatings by additive manufacturing are a representative high-performance electrical contact materials. Here, an appropriate current of 2 A is introduced during the friction process to optimize the current-carrying friction behavior and anti-wear ...
Jiebin Du, Mingchong Lu, Jiamin Fang, Wei Li, Dexin Chen   +4 more
doaj   +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

The Coupled Temperature Field Model of Difficult-to-Deform Mg Alloy Foil High-Efficiency Electro-Rolling and Experimental Study

Metals
In response to the challenging difficult-to-deform of magnesium foils, a high-efficiency and high-precision electro-rolling temperature field coupled model is established.
Gengliang Liu, Jiaxuan Yang, Tianren Shan, Huaimei Li, Dianlong Wang, Lipo Yang   +5 more
doaj   +1 more source

Study on the orientation detection of surface cracks by electromagnetic acoustic emission

International Journal of Distributed Sensor Networks, 2019
Crack orientation plays a vital role in structural integrity analysis, which provides quantitative crack growth and structural failure information. Even though many structural health monitoring systems can detect crack location and length, only few ...
Zhichao Cai
doaj   +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

Electrostimulated plasticity of titanium under tension

Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов
The paper confirms the possibility of electrical stimulation of plasticity, previously discovered in ultrafine-grained titanium. The regimes of pulsed current during tension have been experimentally determined, which make it possible to significantly ...
O.E. Korolkov, A.A. Misochenko, V.V. Stolyarov   +2 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