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The effect of sample size on the microstructure and mechanical properties of Ti2448 (Ti-24Nb-4Zr-8Sn wt%)

DOI: 10.1016/j.scriptamat.2022.115035 DOI Help

Authors: N. L. Church (University of Cambridge) , L. D. Connor (Diamond Light Source) , N. G. Jones (University of Cambridge)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Scripta Materialia , VOL 222

State: Published (Approved)
Published: September 2022
Diamond Proposal Number(s): 30411 , 22960

Open Access Open Access

Abstract: Ti-Nb based alloys are of commercial importance due to their damping capabilities via a superelastic transformation. However, the starting microstructure of these alloys is often not consistent between studies, even when produced via a nominally comparable methodology, which has the potential to limit the reversibility of the transformation. As such, samples were produced to investigate whether the thickness of the material influenced the microstructures and behaviours seen. It was shown that a single-phase layer exists close to the surface of a two-phase microstructure, and that in very thin material, this can span across the whole sample, promoting more recoverable transformation behaviour. This is important as it not only rationalises discrepancies in the literature, but may also influence component geometries necessary for industrial application.

Journal Keywords: Shape memory alloys (SMA); Titanium alloys; Mechanical properties testing; X-ray diffraction

Diamond Keywords: Alloys

Subject Areas: Materials, Engineering

Instruments: I11-High Resolution Powder Diffraction , I12-JEEP: Joint Engineering, Environmental and Processing

Added On: 12/09/2022 09:01


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Materials Engineering & Processes Aerospace Materials Science Engineering & Technology Metallurgy

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