Results 21 to 30 of about 623,573 (324)

Evaluation of Mechanical Characteristics of Tribofilm Formed on the Surface of Metal Material Due to Friction under Lubrication with Automatic Transmission Fluid

open access: yesTribology Online, 2021
In this study, nano-scratch tests were conducted using atomic force microscope (AFM) to clarify the hardness of a tribofilm derived from an additive (Fluid A or Fluid B in automatic-transmission fluid) formed on an SKS3 cold work tool steel substrate ...
Takayuki Tokoroyama   +8 more
doaj   +1 more source

Mechanical properties of self-ion irradiated pure tungsten using nano-indentation test and micro-tensile test

open access: yesNuclear Materials and Energy, 2022
The existing nano-indentation method and developmental micro-tensile testing method are more attractive in accurately defining the irradiation effect on the mechanical behavior and adopted in this study to identify the detailed irradiation behavior of ...
J.H. Yu, H. Kurotaki, M. Ando, T. Nozawa
doaj   +1 more source

Effects of particle distribution and calculation method on results of nano-indentation technique in heterogeneous nanocomposites-experimental and numerical approaches

open access: yes, 2021
This study aims to investigate the effects of two testing parameters on the results of the nano-indentation experiment in the heterogeneous particle reinforced composites: (1) the particle distribution pattern, and (2) the methods for calculating the ...
M. Heidari   +3 more
semanticscholar   +1 more source

Assessment and validation of SPH modeling for nano-indentation [PDF]

open access: yesComputational Particle Mechanics, 2022
AbstractNano-indentation tests are important techniques in material science. Over the past two decades, many numerical approaches have been proposed to model and simulate the nano-indentation process. In this paper, the possibility of modeling the process using a meshless numerical technique, known as smooth particle hydrodynamics (SPH), is explored ...
Hao Shen   +2 more
openaire   +1 more source

Microstructure, macro-, and nano-hardness assessment of AISI 302 steel aged at 1000°C [PDF]

open access: yesE3S Web of Conferences, 2023
Changes in the microstructure of the AISI 302 steel must be analyzed in order to optimize its mechanical performance. In this paper, we studied the thermal aging behavior of the AISI 302 steel.
Ben Lenda Omar   +4 more
doaj   +1 more source

Penetration Resistance and Penetrability in Pyramidal (Nano)Indentations [PDF]

open access: yesScanning, 2012
SummaryPyramidal nanoindentation loading curves were linearly plotted, normal force versus (penetration depth)3/2. The slope is penetration resistance k, its inverse penetrability. Linear correlations verify. All contributions to the indentation are included in the penetrability.
Gerd, Kaupp, Mohammad Reza, Naimi-Jamal
openaire   +2 more sources

Effect of Structural Relaxation on the Indentation Size Effect and Deformation Behavior of Cu–Zr–Based Nanoglasses

open access: yesFrontiers in Materials, 2021
In this work, the deformation behavior of as-prepared (AP) and structurally relaxed (SR) Cu–Zr–based nanoglasses (NGs) are investigated using nano- and micro-indentation. The NGs are subjected to structural relaxation by annealing them close to the glass
A Sharma   +5 more
doaj   +1 more source

Effect of Heavy Ion Irradiation Dosage on the Hardness of SA508-IV Reactor Pressure Vessel Steel

open access: yesMetals, 2017
Specimens of the SA508-IV reactor pressure vessel (RPV) steel, containing 3.26 wt. % Ni and just 0.041 wt. % Cu, were irradiated at 290 °C to different displacement per atom (dpa) with 3.5 MeV Fe ions (Fe2+).
Xue Bai   +4 more
doaj   +1 more source

Modified deformation behaviour of self-ion irradiated tungsten: A combined nano-indentation, HR-EBSD and crystal plasticity study [PDF]

open access: yes, 2019
Predicting the dramatic changes in mechanical and physical properties caused by irradiation damage is key for the design of future nuclear fission and fusion reactors.
Suchandrima Das   +4 more
semanticscholar   +1 more source

Orientation dependence of the nano-indentation behaviour of pure Tungsten [PDF]

open access: yes, 2020
Coupling of nano-indentation and crystal plasticity finite element (CPFE) simulations is widely used to quantitatively probe the small-scale mechanical behaviour of materials.
Hongbing Yu   +5 more
semanticscholar   +1 more source

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