Results 91 to 100 of about 7,201 (214)

Coupled Vacancy and Phonon‐Scattering Engineering Drive Defect Evolution Toward Multifunctional High‐Performance Bi2Te3 Thermoelectrics

Advanced Science, EarlyView.
ZnSb reduces carrier concentration and suppresses Te volatilization, while Se substitution within QLs softens phonons and enhances anharmonicity. Swapped bilayers near twin boundaries strengthen phonon scattering and interlayer bonding. As a result, the optimal sample achieves an ultra‐high zT ∼1.51, cooling temperature difference of ∼70 K, power ...
Ruiheng Li, Minwen Yang, Huangshui Ma, Jie Zheng, Shengqiang Cui, Xiaobo Tan, Xuri Rao, Xiang An, Zongxiang Kan, Siqi Huo, Jing Shuai, Min Hong, Ran Ang   +12 more
wiley   +1 more source

Research on microstructure and mechanical properties of ultrasonic-assisted contact reactive brazed AZ31B/Zn/AZ31B joints

Hanjie xuebao
AZ31B magnesium alloy was successfully joined via ultrasonic-assisted contact reactive brazing, with Zn serving as the interlayer. The effect of ultrasonic vibration duration on the microstructure and mechanical properties of the joints was studied.
Lei WU, Weineng TANG, wei FU, Xiajun GUO
doaj   +1 more source

Ordered intermetallic compounds combining precious metals and transition metals for electrocatalysis. [PDF]

Front Chem, 2022
Yang M, Wan J, Yan C.
europepmc   +1 more source

Spike‐Embedded Nanocatalysts via Metal‐Directed Carbonization for Highly Efficient and Robust Semi‐Hydrogenation

Advanced Science, EarlyView.
A metal‐directed carbonization strategy transforms hierarchical organic microspheres into spiky carbon catalysts with Pd nanoparticles embedded at the tips. This approach resolves the activity‐stability trade‐off, achieving exceptional poison resistance in semi‐hydrogenations, offering a versatile, scalable platform for designing high‐performance ...
Yintao Li, Yang Sun, Minghang Li, Wenxuan Zhang, Zhengtao Li, Yihao Ni, Yao Zhang, Yong Wang, Samuel S. Veroneau, Pengfei Ji   +9 more
wiley   +1 more source

New Insights on the Electronic-Structural Interplay in LaPdSb and CePdSb Intermetallic Compounds. [PDF]

Materials (Basel), 2022
Gutmann MJ, Pascut GL, Katoh K, Zimmermann MV, Refson K, Adroja DT.   +5 more
europepmc   +1 more source

Hierarchical Ordering Induced Ultrahigh Cryogenic Strength and Strain Hardening in a Ni2CoFeV Medium‐Entropy Alloy

Advanced Science, EarlyView.
A tri‐phase Ni2CoFeV medium‐entropy alloy with fcc, κ, and L12 phases achieves exceptional cryogenic strength‐ductility synergy at 77 K. It delivers a yield strength of 1.4 GPa, an ultimate tensile strength of 2.07 GPa and a tensile ductility of 28%.
Lei Gu, Wei Jiang, Qingzhong Mao, Xiang Chen, Yonghao Zhao   +4 more
wiley   +1 more source

Investigation of variations of metallurgical and morphological phenomena of interface in the magnetic pulse welding of Al–Cu

Journal of Materials Research and Technology
This study investigates the bonding interface characteristics, formation mechanisms of metallurgical bonds, and intermetallic compounds in Al–Cu joints produced by magnetic pulse welding (MPW) using an E-type coil.
Morteza Sarvari, Amir Abdollah-zadeh, Homam Naffakh-Moosavy   +2 more
doaj   +1 more source

Mixing‐Driven Defects and Composition Evolution in Multi‐Material Metal Additive Manufacturing

Advanced Science, EarlyView.
Operando synchrotron X‐ray imaging coupled with high‐fidelity multiphysics modeling uncovers how inter‐material mixing reshapes keyhole dynamics and drives distinct pore‐formation pathways in multi‐material laser powder bed fusion (LPBF). Composition‐dependent instabilities trigger defects, whereas rescanning suppresses porosity and homogenizes Cu ...
Zhilang Zhang, Steve Gaudez, Mario Togni, Steven Van Petegem, Markus Bambach, Mamzi Afrasiabi   +5 more
wiley   +1 more source

Fabrication of CrSi₂-Containing Master Alloys for Modification of Fe-Containing Intermetallic Compounds in Aluminum Alloys. [PDF]

Materials (Basel), 2022
Sun J, Takahashi A, Higashi K, Yamamoto T, Komarov S.   +4 more
europepmc   +1 more source

Structurally Complex Precipitates Enhance Strength‐Ductility Synergy in a Duplex Medium Entropy Alloy

Advanced Science, EarlyView.
Strong‐yet‐ductile precipitation‐hardening alloys require novel microstructural complexity of precipitates in particularly at cryogenic condition, to constantly impart strain hardening of hard‐and‐brittle precipitates. The present work creates innovative structurally complex precipitates assembled with dispersed nanocores and a chemical‐heterogeneity ...
Shaohua Gao, Yang Yang, Xiaoxuan Fan, Jinyu Zhang, Shuaiyang Liu, Jiao Li, Hui Wang, Wenli Song, Gang Liu, Jun Sun   +9 more
wiley   +1 more source