Technical Physics Letters
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Investigation of the mechanism of polymorphic transformation in titanium under femtosecond laser pulse exposure
ManokhinS.S
1,2, Nelasov I.V.
1,2, AshitkovS.I.
3, SitnikovD.S.
3, Kolobov Y.R.
1,2
1Federal Research Center for Problems of Chemical Physics and Medical Chemistry, Russian Academy of Sciences, Chernogolovka, Moscow region, Russia
2Togliatti State University, Togliatti, Russia
3Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow, Russia
2Togliatti State University, Togliatti, Russia
3Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow, Russia
Email: manohin@icp.ac.ru, nelasov@icp.ac.ru, ashitkov11@yandex.ru, sitnikds@gmail.com, kolobov@icp.ac.ru
The change of structural-phase state of near-surface layers of technically pure α-titanium (alloy BT1-0) under the influence of shock waves arising at femtosecond laser irradiation has been investigated. The formation of the near-surface layer hardened by finely dispersed particles of titanium carbides has been established. The elongated particles with FCC -lattice (δ-phase) have a certain orientation ratio with the α-titanium HPC matrix: < 2110> α(HCP)|| < 011>δ(FCC) and 0001α(HCP)||111δ(FCC). The mechanism of this transformation is discussed, which is related to the segregation of carbon atoms on the defects of the crystal structure induced by shock-wave action. Keywords: titanium, titanium carbide, shock-wave impact, phase, structure defects, molecular dynamics.
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Дата начала обработки статистических данных - 27 января 2016 г.