Results 51 to 60 of about 419,468 (275)

Mesoscale magnetism at the grain boundaries in colossal magnetoresistive films

, 2000
We report the discovery of mesoscale regions with distinctive magnetic properties in epitaxial La$_{1-x}$Sr$_{x}$MnO$_{3}$ films which exhibit tunneling-like magnetoresistance across grain boundaries.
A. Gupta, A.J. Millis, C. Kwon, D.K. Petrov, F. Tsui, G. Aeppli, H.L. Ju, H.Y. Hwang, J. Klein, J.E. Evetts, K. Steenbeck, L. Balcells, M. G. Blamire, N. D. Mathur, N.D. Mathur, P. Lecoeur, P. Schiffer, Q. Gan, R.A. Rao, S. Jin, S.P. Isaac, Y. Soh, Yeong-Ah Soh, Z.W. Lin   +23 more
core   +1 more source

Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy

Advanced Engineering Materials, EarlyView.
This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar, David Osman Busse, Maximilian Sprengel, Domenico Furfari, Marc‐André Nielsen, Guilherme Abreu Faria, Jérémy Epp   +6 more
wiley   +1 more source

Evolution of grain boundary character distributions in a cold-deformed Nickel-based superalloy during electropulsing treatment

Journal of Materials Research and Technology, 2020
The evolution of grain boundary character distribution in a cold-deformed nickel-based superalloy during the electropulsing treatment (EPT) was studied. The results revealed that both coherent Σ3 boundaries (Σ3c) and incoherent Σ3 boundaries (Σ3ic) were ...
Hongbin Zhang, Chengcai Zhang, Baokun Han, Jianfeng Qiu, Huiping Li, Shengxue Qin, Jie Liu, Yan Wang, Peng Zhang, Yaokun Pan, Haiping Zhou   +10 more
doaj   +1 more source

Contribution of Pore-Connectivity to Permeation Performance of Silicalite-1 Membrane; Part I, Pore Volume and Effective Pore Size

Membranes, 2021
The micropore volumes and effective pore sizes of two types of silicalite-1 membranes were compared with those of a typical silicalite-1 powder. The silicalite-1 membrane with fewer grain boundaries in the membrane layer showed similar micropore volume ...
Motomu Sakai, Yukichi Sasaki, Takuya Kaneko, Masahiko Matsukata   +3 more
doaj   +1 more source

On the Impact Energy Absorption of an Advanced High‐Strength Bilayer Steel Composite Consisting of Carbide‐Free Bainitic Steel and High‐Mn Twinning‐Induced Plasticity Steel

Advanced Engineering Materials, EarlyView.
Excellent combinations of strength and impact toughness are obtained in a bilayer composite of high‐strength carbide‐free bainitic (CFB) steel and high‐ductility twinning‐induced plasticity (TWIP) steel. The composite absorbs energy at small strains when the notch is placed on the TWIP side and at high strains when the notch is placed on the CFB side ...
Kendra Hawke, Xiaogang Li, Amir Partovi, Colin Scott, Fateh Fazeli, Hatem Zurob   +5 more
wiley   +1 more source

A study of multi-frequency electromagnetic responses on steel grain boundaries using 3D micro and macro FE models

Materials & Design
Microstructures of steels has a decisive influence on its mechanical properties, among which the microscopic component of grain boundary is particularly important. In this study, based on multi-frequency electromagnetic detection technology, the 3D micro-
Jianing Zhao, Jialong Shen, Xi Liu, Yufeng Chen, Chen Zhang, Zhengbing Meng, Lei Zhou   +6 more
doaj   +1 more source

Research progress in grain boundary serration in iron/nickel based austenitic polycrystalline alloys

工程科学学报, 2021
Grain boundaries of high-temperature metallic materials, such as alloys, are often considered weak. At elevated temperatures, the strength of the grain boundary is relatively lower than that of the intragranular areas, and cracks often initially form on ...
Xia ZHAO, Min WANG, Xian-chao HAO, Xiang-dong ZHA, Ming GAO, Ying-che MA, Kui LIU   +6 more
doaj   +1 more source

Removing grain boundaries from three-dimensional colloidal crystals using active dopants

, 2016
Using computer simulations we explore how grain boundaries can be removed from three-dimensional colloidal crystals by doping with a small fraction of active colloids. We show that for sufficient self-propulsion, the system is driven into a crystal-fluid
Dijkstra, Marjolein, Filion, Laura, van der Meer, Berend   +2 more
core   +1 more source

Is Young's Modulus a Critical Coating Property Determining Fouling‐Release Performance of Marine Coatings?

Advanced Engineering Materials, EarlyView.
The release of foulers from protective marine coatings is determined by several interrelated material properties, including the strength of Young's modulus, the flexibility of chain segments, the surface free energy, and the magnitude of hydrodynamic stress.
Johann C. Schaal, Andreas Brinkmann, Andreas Hartwig   +2 more
wiley   +1 more source

Misorientation effect of grain boundary on the formation of discontinuous precipitation in second and third generation single crystal superalloys

MATEC Web of Conferences, 2014
[001] tilt artificial grain boundaries of Ni-based single crystal superalloys CMSX-4 and DD10 have been prepared by self-diffusion bonding. The microstructural stability of 0 ∼ 30∘ artificial grain boundaries have been investigated after heat treatment ...
Yu Zhengrong, Ding Xianfei, Zheng Yunrong, Cao Lamei, Feng Qiang   +4 more
doaj   +1 more source