Results 91 to 100 of about 26,998 (312)

Suppressing scratch-induced brittle fracture in silicon by geometric design modification of the abrasive grits

open access: yesJournal of Materials Research and Technology, 2019
The overarching goal of this research was to investigate the application of spherically shaped abrasive particles in achieving ductile-mode cutting. Scratching experiments were carried out to assess the differences between arbitrarily and spherically ...
Andrii M. Kovalchenko   +4 more
doaj   +1 more source

Ductile To Brittle Transition In Dynamic Fracture Of Brittle Bulk Metallic Glass [PDF]

open access: yes, 2008
We report an unusual transition from a locally ductile to a pure brittle fracture in the dynamic fracture of brittle Mg65Cu20Gd10 bulk metallic glass. The fractographic evolution from a dimple structure to a periodic corrugation pattern and then to the ...
Wang, WH (reprint author), Chinese Acad Sci, Inst Phys, POB 603, Beijing 100080, Peoples R China.   +6 more
core   +1 more source

Creep Properties and Deformation Mechanism of Additively Manufactured NiAl‐CrMo Composites

open access: yesAdvanced Engineering Materials, EarlyView.
Additively manufactured NiAl‐CrMo composites contain numerous interfaces and cell boundaries that control their creep response. At 700°C under high applied stress, creep is dominated by dislocation‐controlled power‐law mechanisms. At 800°C–900°C and lower stresses, creep is primarily diffusion‐controlled along cell boundaries.
Jan Vollhüter   +9 more
wiley   +1 more source

Ontology‐Aligned Structuring and Reuse of Multimodal Materials Data and Workflows Toward Automatic Reproduction

open access: yesAdvanced Engineering Materials, EarlyView.
Reproduction of stacking fault energy calculations from literature with a semi‐automated large language model‐assisted extraction procedure: extraction of simulation protocol, atomistic structures, computational parameters, and reported results, ontology alignment, knowledge graph construction and, finally, recomputation forvalidation.
Sepideh Baghaee Ravari   +5 more
wiley   +1 more source

Fracture toughness characterization of thin Ti/SiC composites [PDF]

open access: yes, 2011
Titanium based alloys reinforced uniaxially with silicon carbide fibres (Ti/SiC) are advanced and innovative materials for aerospace vehicles.
Ma, Wei
core  

Nondestructive Testing of Welded Composite Metal Foams

open access: yesAdvanced Engineering Materials, EarlyView.
X‐ray computed tomography (CT) is used to evaluate welded steel–steel composite metal foam (CMF) joints of two density classes. It reports variation in postweld spatial void distribution and correlates it to weld‐induced changes, mechanical performance, and failure within welded CMF panels.
Chinmaya Prerana Inguva   +2 more
wiley   +1 more source

Multiscale Modeling and Simulation of Damage by Void Nucleation and Growth [PDF]

open access: yes, 2011
Voids are observed to be generated under sufficient loading in many materials, ranging from polymers and metals to biological tissues. The presence of these voids can have drastic implications at the macroscopic level including strong material softening ...
Reina Romo, Celia
core   +1 more source

Precipitation Simulations of the O‐Phase in Ti2AlNb Alloys Processed by Laser Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
Simulated and experimental evolution of the O‐phase volume fraction during postprocessing of a Ti‐21Al‐25Nb (at.%) alloy processed by laser powder bed fusion. With results of sensitivity to input parameters from a thorough and quantified analysis, the interfacial energy matrix/precipitate is the most relevant input parameter for the simulation of the O‐
Silvana Tumminello   +7 more
wiley   +1 more source

Ductile-to-brittle transition behavior of X52 line pipe steel at low temperatures and its implications for crack arrest in CO2 pipelines

open access: yes管道保护
During CO2 leakage, the Joule-Thomson effect and operational factors such as throttling and venting can cause the local temperature of the pipeline to drop abruptly to -78.5 ℃, significantly increasing the risk of brittle fracture.
Yi ZHANG   +4 more
doaj   +1 more source

Influence of strain rate on ductile versus brittle fracture for ductile cast iron EN-GJS-500-14 in V-notch three-point bending tests

open access: yesMATEC Web of Conferences, 2018
Three point bending tests on V-notched specimens machined from a component cast in EN-GJS 500-14 nodular iron solid solution strengthened by silicon have been carried out.
Ahmad Maqsood   +2 more
doaj   +1 more source

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