Deformation due to migration of faceted twin boundaries in magnesium and cobalt

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F15%3A00464014" target="_blank" >RIV/68081723:_____/15:00464014 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1080/14786435.2015.1115134" target="_blank" >http://dx.doi.org/10.1080/14786435.2015.1115134</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/14786435.2015.1115134" target="_blank" >10.1080/14786435.2015.1115134</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Deformation due to migration of faceted twin boundaries in magnesium and cobalt

Popis výsledku v původním jazyce

Recent experimental observations show that {1 0 -1 2} twin boundaries in hexagonal close-packed (hcp) metals are frequently faceted. The objective of this paper is to investigate the influence of this faceting on the strain produced by twinning. We show that basal–prismatic (BP) facets are terminated by opposite disclinations and the migration of these facets along a straight {1 0 -1 2} twin boundary produces ordinary twinning shear. On the other hand, joining conjugate twins gives rise to BP facets terminated on the parent twin boundaries by identical disclinations. In this case, the strain produced by the migration of BP facets is an average between the strains produced by the individual conjugate twins. These theoretical studies are complemented by two EBSD measurements on cobalt that is closely related to magnesium. The misorientation profiles measured across two conjugate twin boundaries yield a misfit of approx. 7° consistent with the theoretical prediction that the corner of a twin embryo is terminated by two identical disclinations, each accommodating a misfit of 3.7°.

Název v anglickém jazyce

Deformation due to migration of faceted twin boundaries in magnesium and cobalt

Popis výsledku anglicky

Recent experimental observations show that {1 0 -1 2} twin boundaries in hexagonal close-packed (hcp) metals are frequently faceted. The objective of this paper is to investigate the influence of this faceting on the strain produced by twinning. We show that basal–prismatic (BP) facets are terminated by opposite disclinations and the migration of these facets along a straight {1 0 -1 2} twin boundary produces ordinary twinning shear. On the other hand, joining conjugate twins gives rise to BP facets terminated on the parent twin boundaries by identical disclinations. In this case, the strain produced by the migration of BP facets is an average between the strains produced by the individual conjugate twins. These theoretical studies are complemented by two EBSD measurements on cobalt that is closely related to magnesium. The misorientation profiles measured across two conjugate twin boundaries yield a misfit of approx. 7° consistent with the theoretical prediction that the corner of a twin embryo is terminated by two identical disclinations, each accommodating a misfit of 3.7°.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

—

Projekt

<a href="/cs/project/ED1.1.00%2F02.0068" target="_blank" >ED1.1.00/02.0068: CEITEC - central european institute of technology</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

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

95

Číslo periodika v rámci svazku

36

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

4106-4117

Kód UT WoS článku

000366665100004

EID výsledku v databázi Scopus

2-s2.0-84948146715