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Title: EBSD characterization of twinning in cold-rolled CP-Ti

This work presents the use of a mechanical testing system and the electron backscatter diffraction technique to study the mechanical properties and twinning systems of cold-rolled commercial purity titanium, respectively. The dependence of twinning on the matrix orientation is analyzed by the distribution map of Schmid factor. The results showed that the commercial purity titanium experienced strong strain hardening and had excellent formability during rolling. Both the (112{sup ¯}2)<112{sup ¯}3{sup ¯}> compressive twins and (101{sup ¯}2)<101{sup ¯}1{sup ¯}> tensile twins were dependent on the matrix orientation. The Schmid factor of a grain influenced the activation of a particular twinning system. The specific rolling deformation of commercial purity titanium controlled the number and species of twinning systems and further changed the mechanical properties. - Highlights: • CP-Ti experienced strain hardening and had excellent formability. • Twins were dependent on the matrix orientation. • Schmid factor of a grain influenced the activation of a twinning system. • Rolling deformation controlled twinning systems and mechanical properties.
Authors:
 [1] ;  [1] ;  [1] ;  [2] ;  [1] ;  [1] ;  [3] ;  [1]
  1. School of Materials Science and Engineering, Central South University, Changsha 410083 (China)
  2. (China)
  3. Zunyi Titanium Industry Co. Ltd., Zunyi 563004 (China)
Publication Date:
OSTI Identifier:
22288664
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Characterization; Journal Volume: 84; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BACKSCATTERING; ELECTRON DIFFRACTION; ELECTRONS; IMPURITIES; MECHANICAL PROPERTIES; ROLLING; STRAIN HARDENING; TITANIUM; TWINNING