Results 41 to 50 of about 6,691 (300)

Microstructural modelling of creep crack growth from a blunted crack [PDF]

, 1998
The effect of crack tip blunting on the initial stages of creep crack growth is investigated by means of a planar microstructural model in which grains are represented discretely. The actual linking-up process of discrete microcracks with the macroscopic
Giessen, E. van der, Onck, P.R.,, Onck, P.R., Giessen, E. van der; id_orcid, Giessen, E. van der,   +4 more
core  

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Achieving high-plasticity pure aluminium from wire-based friction stir additive manufacturing

Materials Research Letters
In the request for sustainable development in complex components manufacturing, designing room-temperature high-plasticity material with simpler alloys becomes paramount.
Zeyu Zhang, Long Wan, Yuming Xie, Qi Wen, Dongxin Mao, Wenjiang Dong, Xiuwen Sun, Huijia Tian, Xiangchen Meng, Yongxian Huang   +9 more
doaj   +1 more source

Atomistic simulations of plasticity heterogeneity in gradient nano-grained FCC metals

Materials & Design, 2022
Gradient nano-grained (GNG) metals are an emerging class of heterogeneous structured materials with extraordinary mechanistic performances and unnatural plasticity mechanisms, which are unachievable in traditional homogeneous nanocrystalline metals. Here,
Like Xu, Zhifeng Huang, Qiang Shen, Fei Chen   +3 more
doaj   +1 more source

Plastic deformation of dense nanocrystalline yttrium oxide at elevated temperatures [PDF]

, 2012
Nanocrystalline yttrium oxide, Y2O3 with 110 nm average grain size was plastically deformed between 800 ◦C and 1100 ◦C by compression at different strain rates and by creep at different stresses. The onset temperature for plasticity was at 1000 ◦C. Yield
Estournès, Claude, Gallardo-López, Angela, Domínguez-Rodríguez, Arturo, Chaim, Rachman, Marder, Rachel   +4 more
core   +1 more source

Field Report from Collaborative Research Center 1625: Heterogeneous Research Data Management Using Ontology Representations

Advanced Engineering Materials, EarlyView.
A unified research data management framework for heterogeneous materials data is presented. The system integrates multimodal datasets using ontologies and knowledge graphs, enabling interoperability and FAIR (findable, accessible, interoperable, reusable) data principles. By linking data across scales and workflows, it supports reproducible, Artifitial
Doaa Mohamed, Samuel García Vázquez, Behnam Mardani, Victor Dudarev, Alfred Ludwig, Maribel Acosta, Markus Stricker   +6 more
wiley   +1 more source

Creep-fatigue life evaluation of Sn-3.5Ag lead-free solder at low temperatures

Mechanical Engineering Journal, 2016
This paper describes creep-fatigue lives of Sn-3.5Ag lead-free solder at low temperatures. Since solders have lower melting temperature and electronic devices are often used at low temperature environment, it is effective for improving the fatigue life ...
Noritake HIYOSHI
doaj   +1 more source

Deformation nanomechanics and dislocation quantification at the atomic scale in nanocrystalline magnesium

Journal of Magnesium and Alloys, 2020
Classical molecular dynamics (MD) simulation method is employed to study the uniaxial tensile deformation of nanocrystalline magnesium (Mg) of varying grain size levels.
Md. Shahrier Hasan, Rachell Lee, Wenwu Xu   +2 more
doaj   +1 more source

Efficient Coarse‐Grained Superplasticity of a Gigapascal Lightweight Refractory Medium Entropy Alloy

Advanced Science, 2023
Superplastic metals that exhibit exceptional ductility (>300%) are appealing for use in high‐quality engineering components with complex shapes. However, the wide application of most superplastic alloys has been constrained due to their poor strength ...
Yuefei Jia, Shiwei Wu, Yongkun Mu, Long Xu, Chang Ren, Kang Sun, Jun Yi, Yandong Jia, Wentao Yan, Gang Wang   +9 more
doaj   +1 more source

Influence of solutes on the competition between mesoscopic grain boundary sliding and coupled grain boundary motion

, 2012
The competition between coupled grain boundary motion and mesoscopic grain boundary sliding as deformation mechanisms in polycrystalline metals is studied for nanocrystalline Cu with and without solutes by molecular dynamics computer simulations.
Karsten Albe, Schäfer, Jonathan, Albe, Karsten, Jonathan Schäfer   +3 more
core   +1 more source