Twinning in CoCrFeNiMn high entropy alloy induced by nanoindentation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F20%3A00533791" target="_blank" >RIV/68081723:_____/20:00533791 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21340/20:00341815

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0921509320303798?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0921509320303798?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.msea.2020.139297" target="_blank" >10.1016/j.msea.2020.139297</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Twinning in CoCrFeNiMn high entropy alloy induced by nanoindentation

Popis výsledku v původním jazyce

The nanoindentation tests of CoCrFeNiMn high entropy alloy prepared by mechanical alloying route have been performed. Pop-ins on loading curves have been characterized by their indentation load, depth and length. Locations of indents within the grains, grain sizes and their orientation were obtained by the Scanning Electron Microscope/Electron Back Scattered Diffraction analysis. The stress state under the indenter was analyzed by Finite Element Method simulations using von Mises plasticity. The analysis has shown that pop-in events can be attributed to twin initiation as the pop-in length can be correlated with the twin thickness. The estimated critical twin shear stress corresponds to the one measured by the tensile test when the indentation size effect is taken into account. Fine grained HEA has very close Critical Resolved Shear Stress values for slip and twinning.

Název v anglickém jazyce

Twinning in CoCrFeNiMn high entropy alloy induced by nanoindentation

Popis výsledku anglicky

The nanoindentation tests of CoCrFeNiMn high entropy alloy prepared by mechanical alloying route have been performed. Pop-ins on loading curves have been characterized by their indentation load, depth and length. Locations of indents within the grains, grain sizes and their orientation were obtained by the Scanning Electron Microscope/Electron Back Scattered Diffraction analysis. The stress state under the indenter was analyzed by Finite Element Method simulations using von Mises plasticity. The analysis has shown that pop-in events can be attributed to twin initiation as the pop-in length can be correlated with the twin thickness. The estimated critical twin shear stress corresponds to the one measured by the tensile test when the indentation size effect is taken into account. Fine grained HEA has very close Critical Resolved Shear Stress values for slip and twinning.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Materials Science and Engineering A-Structural materials

ISSN

0921-5093

e-ISSN

—

Svazek periodika

784

Číslo periodika v rámci svazku

MAY

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

8

Strana od-do

139297

Kód UT WoS článku

000531017900007

EID výsledku v databázi Scopus

2-s2.0-85082870968