Details

Autor(en) / Beteiligte

• Bertrand, Emmanuel
• Castany, Philippe
• Yang, Yang
• Menou, Edern
• Gloriant, Thierry

Titel

Deformation twinning in the full-α″ martensitic Ti–25Ta–20Nb shape memory alloy

Ist Teil von

• Acta materialia, 2016-02, Vol.105, p.94-103

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2016

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Deformation twinning of the Ti–25Ta–20Nb (mass%) shape memory alloy is characterized using EBSD and TEM. The selfaccommodating α″ microstructure is shown to be first deformed using {111}α″ type I and α″ type II reorientation twinning. Plastic deformation occurs further by plastic twinning with a new {130} α″ twinning system. Maximum lattice deformation calculation is a relevant parameter to predict the variant of martensite that is favored during the reorientation process. Conversely, Schmid factor analysis can be used to predict the selection of {130} α″ twinning variants during deformation. Analogy between {130} α″ and {332} β twinning systems is highlighted. [Display omitted]