Interplay of slip and twinning in niobium single crystals compressednat 77 K

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F18%3A00496930" target="_blank" >RIV/68081723:_____/18:00496930 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1557/jmr.2018.398" target="_blank" >http://dx.doi.org/10.1557/jmr.2018.398</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1557/jmr.2018.398" target="_blank" >10.1557/jmr.2018.398</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Interplay of slip and twinning in niobium single crystals compressednat 77 K

Popis výsledku v původním jazyce

High-purity niobium single crystals of five different orientations were compressed at 77 K ton2–4% plastic strain to investigate the mechanisms operative in the initial stage of yielding. Thencrystals deformed in the direction close to the [001] axis exhibit predominant slip on the highstressedn(101) and a much lower stressed ð0 11Þ plane. The expected slip on the ð 101Þ plane isnnearly homogeneously distributed with only a few sharp slip traces corresponding to localizednslip. The samples compressed along center-triangle orientations and those close to then½011 ½ 111 edge deform predominantly by twinning on {112}h111i systems with somencontribution from slip on the ð 101Þ½ 1 1 1 system with the highest Schmid factor. A majority ofntwins exhibit internal contrast due to alternating slip on ð 101Þ and ð0 11Þ planes. No slip traces arenobserved in the matrix adjacent to the twin, which implies that twin boundaries are impenetrablenobstacles for the motion of dislocations.

Název v anglickém jazyce

Interplay of slip and twinning in niobium single crystals compressednat 77 K

Popis výsledku anglicky

High-purity niobium single crystals of five different orientations were compressed at 77 K ton2–4% plastic strain to investigate the mechanisms operative in the initial stage of yielding. Thencrystals deformed in the direction close to the [001] axis exhibit predominant slip on the highstressedn(101) and a much lower stressed ð0 11Þ plane. The expected slip on the ð 101Þ plane isnnearly homogeneously distributed with only a few sharp slip traces corresponding to localizednslip. The samples compressed along center-triangle orientations and those close to then½011 ½ 111 edge deform predominantly by twinning on {112}h111i systems with somencontribution from slip on the ð 101Þ½ 1 1 1 system with the highest Schmid factor. A majority ofntwins exhibit internal contrast due to alternating slip on ð 101Þ and ð0 11Þ planes. No slip traces arenobserved in the matrix adjacent to the twin, which implies that twin boundaries are impenetrablenobstacles for the motion of dislocations.

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

Journal of Materials Research

ISSN

0884-2914

e-ISSN

—

Svazek periodika

34

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

261-270

Kód UT WoS článku

000458506600004

EID výsledku v databázi Scopus

2-s2.0-85056606228