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Fracture of Brittle Metallic Glasses: Brittleness or Plasticity

open access: greenPhysical Review Letters, 2021
We report a brittle Mg-based bulk metallic glass which approaches the ideal brittle behavior. However, a dimple structure is observed at the fracture surface by high resolution scanning electron microscopy, indicating some type of "ductile" fracture mechanism in this very brittle glass. We also show, from the available data, a clear correlation between
X. K. Xi   +5 more
openalex   +4 more sources

A Review on Brittle Fracture Nanomechanics by All-Atom Simulations [PDF]

open access: yesNanomaterials, 2019
Despite a wide range of current and potential applications, one primary concern of brittle materials is their sudden and swift collapse. This failure phenomenon exhibits an inability of the materials to sustain tension stresses in a predictable and ...
Sandeep P. Patil, Yousef Heider
doaj   +2 more sources

Brittle or Quasi-Brittle Fracture of Engineering Materials 2016 [PDF]

open access: yesAdvances in Materials Science and Engineering, 2016
1Department of Engineering Design and Materials, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway 2Faculty of Mechanical Engineering, Politehnica University of Timisoara, Blvd. M. Viteazu, Nr. 1, 300222 Timisoara, Romania 3Fatigue and Fracture Research Laboratory, Center of Excellence in Experimental Solid Mechanics and ...
Filippo Berto   +4 more
doaj   +4 more sources

Microstructural characterisation of brittle fracture initiation sites in reactor pressure vessel steels

open access: goldNuclear Materials and Energy, 2023
Neutron embrittlement of reactor pressure vessel (RPV) steels potentially limits the safe operational time of nuclear reactors. In tested RPV steel samples microcracks are known to originate from cleaved precipitates, inclusions or grain boundaries ...
Paul Chekhonin   +3 more
doaj   +2 more sources

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

open access: goldJournal 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   +2 more sources

Study on Impact Toughness and Fracture Characteristics of N80 Steel Oil Casing at Low Temperature [PDF]

open access: yesCailiao Baohu, 2023
For clarifying the toughness change rules of N80 steel for oil casing under low temperature conditions, the oscillometric shock performance tests were conducted on N80 steel oil casing materials at different temperatures (25, 0, -20, and -40 ℃) using an ...
XING Xijin, LIU Wanying, WU Guang'ai, ZHOU Dingzhao, ZHANG Zhi
doaj   +1 more source

Technical status and considerations of brittle fracture control of pipe fittings

open access: yesYou-qi chuyun, 2020
The station temperature of China-Russia Eastern Gas Pipeline Project is designed low to -45 ℃, which poses new challenges to the brittle fracture prevention capability of pipeline facilities, so it is necessary to set up scientific and reasonable ...
Feng WANG   +4 more
doaj   +1 more source

Study on Fracture Distribution and Local Brittleness Characteristics Based on Stepwise Regression Method

open access: yesGeofluids, 2021
The brittleness of rock is an important parameter that influences and controls the evolution mechanism of the fracture and formation of a fracture net.
Wanchun Zhao   +2 more
doaj   +1 more source

Splitting Opaque, Brittle Materials with Dual-Sided Thermal Stress Using Thermal-Controlled Fracture Method by Microwave

open access: yesCrystals, 2022
The thermal-controlled fracture method has been increasingly focused upon in the high-quality splitting of advanced brittle materials due to its excellent characteristics related to the fact that it does not remove material. For opaque, brittle materials,
Xiaoliang Cheng   +3 more
doaj   +1 more source

Numerical Investigation on Fracture Initiation Properties of Interface Crack in Dissimilar Steel Welded Joints

open access: yesChinese Journal of Mechanical Engineering, 2020
Fracture toughness property is of significant importance when evaluating structural safety. The current research of fracture toughness mainly focused on crack in homogeneous material and experimental results.
Longfei Zhao   +4 more
doaj   +1 more source

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