Basal slip of ⟨a⟩ screw dislocations in hexagonal titanium

Piotr Kwaśniak , Emmanuel Clouet


Basal slip of ⟨a⟩ screw dislocations in hexagonal closed-packed titanium is investigated with ab initio calculations. We show that a basal dissociation is highly unstable and reconfigures to other structures dissociated in a first order pyramidal plane. The obtained mechanism for basal slip corresponds to the migration of the partial dislocations and of the associated stacking fault ribbon in a direction perpendicular to the dissociation plane. Presented results indicate that both basal and pyramidal slip will operate through the Peierls mechanism of double-kink nucleation and will be equally active at high enough temperature.
Author Piotr Kwaśniak (FMSE / DMD)
Piotr Kwaśniak,,
- Division of Materials Design
, Emmanuel Clouet - [Universite Paris-Saclay]
Emmanuel Clouet,,
Journal seriesScripta Materialia, [Scripta Metallurgica et Materialia], ISSN 1359-6462, [0036-9748], (A 35 pkt, Not active)
Issue year2019
Publication size in sheets0.5
Keywords in PolishTytan, plastyczność, dyslokacje, ab initio, poślizg bazowy
Keywords in EnglishTitanium, Plasticity, Dislocations, Ab initio, Basal slip
ASJC Classification3104 Condensed Matter Physics; 2500 General Materials Science; 2200 General Engineering
Languageen angielski
PKwasniak_Basal slip of ⟨a⟩ screw dislocations in hexagonal titanium.pdf 1.75 MB
Score (nominal)35
ScoreMinisterial score = 35.0, 25-04-2019, ArticleFromJournal
Ministerial score (2013-2016) = 35.0, 07-01-2019, ArticleFromJournal
Publication indicators Scopus Citations = 0; WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2016 = 1.696; WoS Impact Factor: 2017 = 4.163 (2) - 2017=3.982 (5)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.