Title

Temperature-Dependent Behavior Of A Polycrystalline Niti Shape Memory Alloy Around The Transformation Regime

Keywords

Dynamic modulus; Martensite reorientation; Neutron diffraction; NiTi; Shape memory alloys

Abstract

The mechanical and microstructural behavior of a polycrystalline Ni 49.9Ti50.1 (at.%) shape memory alloy was investigated as a function of temperature around the transformation regime. The bulk macroscopic responses, measured using ex situ tensile deformation and impulse excitation tests, were compared to the microstructural evolution captured using in situ neutron diffraction. The onset stress for inelastic deformation and dynamic Young's modulus were found to decrease with temperature in the martensite regime followed by an increase starting near the austenite start temperature, attributed to the reverse transformation.

Publication Date

4-1-2013

Publication Title

Scripta Materialia

Volume

68

Issue

8

Number of Pages

571-574

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.scriptamat.2012.11.042

Socpus ID

84874000337 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84874000337

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