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Modelling nano-indentation of ion-irradiated FCC single crystals by strain-gradient crystal plasticity theory

International journal of plasticity, 2019
In this work, a strain-gradient crystal plasticity theory with irradiation effect is proposed for the surface nano-indentation of ion-irradiated FCC metals.
Xiazi Xiao   +3 more
semanticscholar   +1 more source

A model for nano-indentation creep

Acta Metallurgica et Materialia, 1993
A new model is developed to describe that stage of nano-intentation creep prior to `pop-in', i.e. when the indentation load induces purely elastic stresses within the sample.
W.B. Li, R. Warren
openaire   +1 more source

Mesure de dureté par nano-indentation

Frottement, usure et lubrification, 2007
La nano-indentation est une technique permettant la mesure des proprietes mecaniques des couches minces et des materiaux traites en surface. Cet article s’interesse a la mesure de durete par nano-indentation. L’appareillage tres precis a necessite d'ete detaille : mesure et application de la force normale, mesure du deplacement normal et geometrie des ...
Olek MACIEJAK, Pascal AUBERT
openaire   +1 more source

Effect of Cu additions on mechanical properties of Ni3Sn4-based intermetallic compounds: First-principles calculations and nano-indentation measurements

Vacuum, 2019
The (Ni,Cu)3Sn4 phase as intermetallic compounds (IMCs) plays an important role in evaluating reliability of solder joints. The first-principles calculations were performed to investigate the phase stability, mechanical properties and electronic ...
Xiaoyang Bi   +3 more
semanticscholar   +1 more source

A nano-indentation model for spherical indenters

Modelling and Simulation in Materials Science and Engineering, 2006
A model is developed for nano-indentation with spherical indenters. It is based on the Taylor dislocation model and is an extension of Qu et al's (2006 Int. J. Plast. 22 1265?86) micro-indentation model for spherical indenters to nano-indentation. For relatively large indenters (e.g. radii on the order of 100??m), the present model degenerates to Qu et
Y Huang, X Feng, G M Pharr, K C Hwang
openaire   +1 more source

Single-step calibration method for nano indentation testing machines

, 2020
Nano indentation is an effective method for materials mechanical characterisation at grain scale. Literature underlined relevance of testing machine calibration to measurement uncertainty of the mechanical characterisation. ISO 14577-2 defines multi-step
M. Galetto   +2 more
semanticscholar   +1 more source

Thin Film Mechanical Properties Through Nano-Indentation

MRS Proceedings, 1998
Measuring material properties of sub-micron layers is an important yet a difficult task due to unavailability of proper instrumentation. Techniques such as Dynamic mechanical analysis has been used heavily in the last few years to measure modulus and glass transition temperature.
Indira Adhihetty   +3 more
openaire   +1 more source

High temperature nano-indentation of tungsten: Modelling and experimental validation

Materials Science & Engineering: A, 2019
It is very well known that tungsten is intrinsically brittle at room temperature, and the characterization of its ductile properties by conventional mechanical tests is possible only above the ductile-to-brittle transition temperature (DBTT), i.e.
Xiazi Xiao   +5 more
semanticscholar   +1 more source

Evaluation of helium effect on irradiation hardening in F82H, ODS, SIMP and T91 steels by nano-indentation method

Fusion engineering and design, 2019
To access irradiation conditions of candidate materials used in advanced nuclear energy systems, simultaneous helium and iron-ion irradiation have been widely used to study on the synergistic effects of helium bubble nucleation and displacement damage ...
Bingsheng Li   +9 more
semanticscholar   +1 more source

NANO-INDENTATION USING SPHERICAL INDENTERS

Nondestructive Testing and Evaluation, 2001
Abstract Depth sensing nano-indentation can be used to determine the mechanical properties of materials in situations where conventional test methods may be difficult or inappropriate to apply. Experimental materials may only be available in small quantities, as a component in a composite or as a coating on a dissimilar substrate.
openaire   +1 more source

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