Results 91 to 100 of about 2,346 (291)

Cryogenic ductility enhancement mechanisms of AA7075 alloy under different deformation conditions: Tensile tests and incremental sheet forming

Materials & Design
High-strength aluminum alloys are potential structural materials for aerospace and transportation fields. However, the poor formability at room temperature (RT) and the unstable microstructure at elevated temperature limit the wider application in which ...
Yanle Li, Feifei Liu, Heng Chen, Xiaoxia Qi, Tingyu Ge, Xunzhong Guo, Hai Gong, Fangyi Li   +7 more
doaj   +1 more source

Design and Analysis of Compression–Torsion Coupling Metamaterials Using the Golden Section Method

Advanced Engineering Materials, EarlyView.
A novel compression–torsion metamaterial is engineered using inclined rods and symmetry breaking. To optimize its torsional performance, the golden section method is employed. The mechanical response of the metamaterial is validated through both numerical analysis and experimental validation.
Amirhossein Hassani, Sara Bagherifard
wiley   +1 more source

High-cycle fatigue behavior of TWIP steel with graded grains: breaking the rule of mixture

Materials Research Letters, 2019
We report a method, named as T & A treatment, to improve the high-cycle fatigue (HCF) property of twinning-induced plasticity (TWIP) steel without sacrificing its ductility and work-hardening ability.
C.W. Shao, P. Zhang, X.G. Wang, Q. Wang, Z.F. Zhang   +4 more
doaj   +1 more source

Flow stress anisotropy caused by geometrically necessary boundaries

, 1992
The microstructural anisotropy of deformed metal is related to the formation of geometrically necessary boundaries such as dense dislocation walls and microbands.
Hansen, N., Juul Jensen, D.
core   +1 more source

Stretching the Printability Metric in Direct‐Ink Writing with Highly Extensible Yield‐Stress Fluids

Advanced Functional Materials, EarlyView.
This study introduces “drawability” as a new metric for assessing printability in direct‐ink writing, focusing on gap‐spanning performance and speed robustness. By designing yield‐stress fluids with high extensibility, we demonstrate that extensional strain‐to‐break significantly enhances printability.
Chaimongkol Saengow, Samya Sen, Joaquin Yus, Eliza E. Lovrich, Amanda G. Hoika, Kelly M. Chang, Arielle A. Pfeil, Nellie Haug, Amy J. Wagoner Johnson, Randy H. Ewoldt   +9 more
wiley   +1 more source

γʹ and γ″ co-precipitation phenomena in directly aged Alloy 718 with high δ-phase fractions

Materials & Design
Co-precipitation of γ′ and γ′′ is the main strengthening mechanism that provides superior high-temperature strength in directly aged Alloy 718 aerospace parts.
Vitor V. Rielli, Ehsan Farabi, Flora Godor, Christian Gruber, Aleksandar Stanojevic, Bernd Oberwinkler, Sophie Primig   +6 more
doaj   +1 more source

Hierarchical features infused heterogeneous grain structure for extraordinary strength-ductility synergy

Materials Research Letters, 2018
A synergistic balance of strength and ductility was achieved in a prototypical fcc-based Al0.3CoCrFeNi complex concentrated alloy by incorporating hierarchical microstructural features into heterogeneous grain structure.
Shivakant Shukla, Deep Choudhuri, Tianhao Wang, Kaimiao Liu, Robert Wheeler, Sarah Williams, Bharat Gwalani, Rajiv S. Mishra   +7 more
doaj   +1 more source

Strain-Hardening Model of Dual-Phase Steel With Geometrically Necessary Dislocations

, 2018
The strain-hardening behavior of metal during the uniaxial tension can be treated as the competing result of generation and annihilation of statistically stored dislocations (SSDs). Geometrically necessary dislocations (GNDs) are generated to accommodate
Wen Jiao Dan, Yong Sheng Xu, Wei Gang Zhang, Chuang Ren   +3 more
core   +1 more source

Polarizable Vanadium Dipoles Promote Water Dissociation on Vanadium‐Based Metal Organic Framework

Advanced Functional Materials, EarlyView.
The polarization of unpaired V 3d electrons weakens the H─O bond to improve water dissociation by the dual Vδ+:O─H and Pλ−:H─O coupling hydrogen bonds formation and relaxation. P@V‐MOF electrocatalyst shows low overpotentials (94 mV in acid, 178 mV in neutral, and 77 mV in alkaline solutions) with excellent stability for effective overall water ...
Xinjuan Liu, Jun Xu, Minmin Fan, Jingcheng Xu, Mengyuan Li, Yun Gong, Weiwei Yang, Lei Li, Yong Zhou, Deqiang Zhao, Yuhua Xue, Xingtao Xu, Chang Q. Sun, Liming Dai   +13 more
wiley   +1 more source

Calculation of Geometrically Necessary Dislocation Density within Planar Discrete Dislocation Plasticity: Application to Cyclic Loading

European Journal of Mechanics - A/Solids
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Y. Piao, N.G. Prastiti, S. Waheed, D.S. Balint   +3 more
openaire   +1 more source