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Title: Plastic deformation of single crystals of Ti5Si3 with the hexagonal D88 structure
Authors: Kishida, Kyosuke  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0003-0391-5022 (unconfirmed)
Fujiwara, Masakazu
Adachi, Hiroki
Tanaka, Katsushi
Inui, Haruyuki  kyouindb  KAKEN_id
Keywords: Deformation behavior
Dislocation structures
Mechanical properties
Transition-metal silicides
Twinning
Issue Date: Feb-2010
Publisher: Elsevier
Journal title: Acta Materialia
Volume: 58
Issue: 3
Start page: 846
End page: 857
Abstract: The deformation behavior of Ti5Si3 single crystals with the hexagonal D88 structure has been investigated in compression as a function of crystal orientation in a temperature range from 1200 to 1500°C. Three different types of deformation modes: {1¯100}[0001] prismatic slip, {2¯1¯12}1/3<2¯1¯1¯3> pyramidal slip and {2¯1¯18}<8¯4¯4¯3> twinning were identified for the first time as being operative in Ti5Si3 at temperatures above 1300°C, depending on the loading axis orientation. The critical resolved shear stresses (CRSS) decrease steeply with increasing temperature for all deformation modes. The values of the CRSS for {1¯100}[0001] prismatic slip are considerably lower than those for {2¯1¯12}1/3<2¯1¯1¯3> pyramidal slip, but are comparable to those for {2¯1¯18}<8¯4¯4¯3> twinning. The favored deformation modes are discussed on the basis of anisotropic elasticity theory of dislocations.
Rights: c 2009 Acta Materialia Inc.
この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。This is not the published version. Please cite only the published version.
URI: http://hdl.handle.net/2433/102267
DOI(Published Version): 10.1016/j.actamat.2009.09.062
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