Details

Autor(en) / Beteiligte

• Yang, Y.
• Zhan, J.B.
• Sui, J.B.
• Li, C.Q.
• Yang, K.
• Castany, P.
• Gloriant, T.

Titel

Functionally graded NiTi alloy with exceptional strain-hardening effect fabricated by SLM method

Ist Teil von

• Scripta materialia, 2020-11, Vol.188, p.130-134

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2020

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• In this study, we have employed a repetitive laser scanning strategy to fabricate a three-dimensional functionally graded NiTi alloy by SLM method. The microstructure shows gradient characterized by the increase of volume fraction for B19’ phase. An exceptional strain-hardening associated with continuous increase of mechanical recoverable strain is obtained in such material. The gradient of functionality is attributed to the superimposition of multi-deformation mechanisms originating from the microstructural gradient. The deformation mechanisms are dominated by reorientation of B19’ variants at early stage of deformation and then by stress-induced martensitic transformation at higher level of stress. [Display omitted]