Results 41 to 50 of about 5,882 (208)

Size-dependent geometrically necessary dislocation structures in single-crystalline tungsten [PDF]

, 2022
Wedge indentation experiments were conducted to study the depth dependence of geometrically necessary dislocation (GND) structures in single-crystalline tungsten.
Luan, Likang, Schwaiger, Ruth, Volz, Tillmann, Wang, Jin, Weygand, Sabine M.   +4 more
core   +3 more sources

Indentation size effects of ferritic/martensitic steels: A comparative experimental and modelling study

Materials & Design, 2018
The paper presents a comparative study of different nanoindentation methods as applied to the ferritic/martensitic steels T91 and Eurofer97, here investigated in the non-irradiated reference state, but envisaged as structural materials for nuclear ...
Ana Ruiz-Moreno, Peter Hähner
doaj   +1 more source

Nanoindentation Properties of 18CrNiMo7-6 Steel after Carburizing and Quenching Determined by Continuous Stiffness Measurement Method

Metals, 2020
In this work, the nanomechanical properties involving the indentation size effect (ISE) and yield strength of a surface-modified layer of 18CrNiMo7-6 steel after case hardening were investigated via nanoindentation experiments.
Guiyuan Zhou, Jian Guo, Junyu Zhao, Qian Tang, Zhaonan Hu   +4 more
doaj   +1 more source

Microhardness model based on geometrically necessary dislocations for heterogeneous material

Journal of Materials Research and Technology, 2021
Lamellar cast irons are known as heterogeneous materials. Their overall hardness is determined by the microhardness of their microstructure contents.
Mohammed Mendas, Stéphane Benayoun, Mohamed Hadj Miloud, Ibrahim Zidane   +3 more
doaj   +1 more source

The influence of the indentation size in relation to the size of the microstructure of three polycrystalline materials indented with a Berkovich indenter [PDF]

, 2017
Three different polycrystalline materials, a fine-grained martensitic steel (CrMoV), a coarse-grained high-purity copper (C110), and a two-phase microstructure titanium alloy (Ti-6Al-4V), have been selected to investigate the heterogeneity of deformation
Bhadeshia, C.J. Bennett, Callister, Doerner, Fischer-Cripps, Fleck, Han, Kucharski, Kuhn, Larsson, Li, Lim, Liu, Loubet, Ma, McElhaney, Meyers, O. Iracheta, Pethica, Qu, Sargent, Sen, Stelmashenko, W. Sun, Wang   +24 more
core   +2 more sources

Balancing porosity and mechanical properties of titanium samples to favor cellular growth against bacteria [PDF]

, 2019
Two main problems limit the success of titanium implants: bacterial infection, which restricts their osseointegration capacity; and the stiffness mismatch between the implant and the host cortical bone, which promotes bone resorption and risk of fracture.
Beltrán, Ana M., Cauich-Rodríguez, Juan V., Civantos, Ana, Domínguez-Trujillo, Cristina, García-Moreno, Francisco, Garvi Higueras, María Dolores, Guzmán, Julio J., Lebrato Martínez, Julián, Rodríguez-Ortiz, José Antonio, Torres Hernández, Yadir   +9 more
core   +1 more source

The Relationship between Polishing Method and ISE Effect

Crystals, 2023
The aim of the submitted work is to study the relationship between the method of polishing the metallurgical surface and the indentation size effect (ISE). The material of the sample was annealed 99.5% aluminum.
Jozef Petrík, Peter Blaško, Dagmar Draganovská, Sylvia Kusmierczak, Marek Šolc, Miroslava Ťavodová, Mária Mihaliková   +6 more
doaj   +1 more source

Indentation Hardness Measurements at Macro-, Micro-, and Nanoscale: A Critical Overview [PDF]

, 2016
The Brinell, Vickers, Meyer, Rockwell, Shore, IHRD, Knoop, Buchholz, and nanoindentation methods used to measure the indentation hardness of materials at different scales are compared, and main issues and misconceptions in the understanding of these ...
A Fischer-Cripps, A Germak, A Gouldstone, A Gård, A Iost, A Khan, A Norbury, A Zocco, AM Korsunsky, ASTM D1415, ASTM D2240 - 15, ASTM D2583 - 13a, ASTM E10 - 15a, ASTM E140-12be1, ASTM E18 - 16, ASTM E2546, ASTM E384 - 16, ASTM E92–16, B Alemón, B Rother, BS EN ISO 18265, C Gamonpilas, CD Rivera-Tello, D Grabco, D Tabor, D Tabor, E Berkovich, E Broitman, E Broitman, E Broitman, E Broitman, E Lips, E Meyer, Esteban Broitman, F Knoop, F Mohs, G Pharr, G Pharr, G Vander Voort, H Bückle, H Czichos, H-R Wilde, I Hussain, IM Hutching, ISO 14577, ISO 2039-2, ISO 2815, ISO 48, ISO 6506-1-2014, ISO 6507-1-2005, ISO 6508-1, J Brinell, J Chen, J Tuck, K Herrmann, L Coltro, L Min, M Rester, M Soomro, MP Johansson, N Sakharova, National Physics Laboratory (UK), P Ludwik, R Brown, R Eriksson, R Jamison, R Jones, RL Smith, S Olsson, S Walley, W Nix, W Oliver, W Oliver, Y Huang, Z Ma   +74 more
core   +1 more source

A gradient elasticity approach to the indentation size effect at very small depths

Journal of the Mechanical Behavior of Materials, 2011
Over the past two decades, the indentation size effect (ISE) has been studied extensively by several authors. A common point among all these studies has been the premise that during the indentation process sufficient plastic deformation is developed so ...
Mokios George P., Aifantis Elias C.
doaj   +1 more source

Effect of annealing ambient conditions on crack formation mechanisms of bulk Bi-2212 ceramic systems

Journal of Asian Ceramic Societies, 2021
This study paves way to examine the influence of different annealing conditions (temperature range of 830-850°C and duration intervals 24-48 h) on the fundamental mechanical performance and characteristic quantities of polycrystalline Bi2.1Sr2.0Ca1.1Cu2 ...
U. Erdem, B. Akkurt, A.T. Ulgen, Y. Zalaoglu, T. Turgay, G. Yildirim   +5 more
doaj   +1 more source