Slip activity in molybdenum single crystals compressed at77 K

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F18%3A00495464" target="_blank" >RIV/68081723:_____/18:00495464 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1080/14786435.2018.1505056" target="_blank" >http://dx.doi.org/10.1080/14786435.2018.1505056</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/14786435.2018.1505056" target="_blank" >10.1080/14786435.2018.1505056</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Slip activity in molybdenum single crystals compressed at77 K

Popis výsledku v původním jazyce

High-purity single crystals of molybdenum of five different orientations were compressed at 77 K to plastic strains between 3% and 4% to investigate the initial stage of plastic flow in these metals. Electron back-scatter diffraction was used to determine the sample orientations before and after deformation to quantify the magnitude and direction of lattice rotation. The slip trace analysis on two perpendicular faces of each prismatic specimen, made using the Nomarski interference contrast, reveals that the slip morphology depends strongly on the orientation of the applied load. The sample oriented near the [001] axis and that of the centre-triangle orientation exhibited sharp slip traces on (101) and (101) planes, whereas the samples oriented near the [011] -[111] edge of the triangle yielded by macroscopic slip on a series of high-index planes. The orientations of observed slip traces were compared with theoretical predictions of slip activity of the twelve {110} < 111 > slip systems made by the Schmid law and using the effective yield criterion developed previously using molecular statics simulations of an isolated 1/2[111] screw dislocation under stress

Název v anglickém jazyce

Slip activity in molybdenum single crystals compressed at77 K

Popis výsledku anglicky

High-purity single crystals of molybdenum of five different orientations were compressed at 77 K to plastic strains between 3% and 4% to investigate the initial stage of plastic flow in these metals. Electron back-scatter diffraction was used to determine the sample orientations before and after deformation to quantify the magnitude and direction of lattice rotation. The slip trace analysis on two perpendicular faces of each prismatic specimen, made using the Nomarski interference contrast, reveals that the slip morphology depends strongly on the orientation of the applied load. The sample oriented near the [001] axis and that of the centre-triangle orientation exhibited sharp slip traces on (101) and (101) planes, whereas the samples oriented near the [011] -[111] edge of the triangle yielded by macroscopic slip on a series of high-index planes. The orientations of observed slip traces were compared with theoretical predictions of slip activity of the twelve {110} < 111 > slip systems made by the Schmid law and using the effective yield criterion developed previously using molecular statics simulations of an isolated 1/2[111] screw dislocation under stress

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

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

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Philosophical Magazine

ISSN

1478-6435

e-ISSN

—

Svazek periodika

98

Číslo periodika v rámci svazku

30

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

20

Strana od-do

2749-2768

Kód UT WoS článku

000444441500003

EID výsledku v databázi Scopus

2-s2.0-85051828477