Aging Enhanced Super-Elasticity and Ductility of a Cold NiTiTa Alloy

Song CAI; Jeremy E. SCHAFFER; Yang REN

doi:10.1007/s11661-022-06738-7

Aging Enhanced Super-Elasticity and Ductility of a Cold NiTiTa Alloy

Song CAI^*, Jeremy E. SCHAFFER, Yang REN

^*Corresponding author for this work

Department of Physics

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

4 Citations (Scopus)

Abstract

A cold NiTiTa alloy was found to be very brittle in the fully annealed condition due to its high-austenite stability, which suppressed stress-induced-martensite transformation and dislocation slip. However, ductility and super-elasticity are largely improved by formation of Ti₃Ni₄ and Ti₂Ni₃ precipitates upon aging at lower temperatures. Cold work promotes Ti₂Ni₃ precipitation during aging. Compared to the as-drawn material, the fully annealed material shows higher strain recovery and elongation after aging for a short amount of time.

Original language	English
Journal	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Online published	15 Jun 2022
DOIs	https://doi.org/10.1007/s11661-022-06738-7
Publication status	Online published - 15 Jun 2022

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title = "Aging Enhanced Super-Elasticity and Ductility of a Cold NiTiTa Alloy",

abstract = "A cold NiTiTa alloy was found to be very brittle in the fully annealed condition due to its high-austenite stability, which suppressed stress-induced-martensite transformation and dislocation slip. However, ductility and super-elasticity are largely improved by formation of Ti3Ni4 and Ti2Ni3 precipitates upon aging at lower temperatures. Cold work promotes Ti2Ni3 precipitation during aging. Compared to the as-drawn material, the fully annealed material shows higher strain recovery and elongation after aging for a short amount of time.",

author = "Song CAI and SCHAFFER, {Jeremy E.} and Yang REN",

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T1 - Aging Enhanced Super-Elasticity and Ductility of a Cold NiTiTa Alloy

AU - CAI, Song

AU - SCHAFFER, Jeremy E.

AU - REN, Yang

PY - 2022/6/15

Y1 - 2022/6/15

N2 - A cold NiTiTa alloy was found to be very brittle in the fully annealed condition due to its high-austenite stability, which suppressed stress-induced-martensite transformation and dislocation slip. However, ductility and super-elasticity are largely improved by formation of Ti3Ni4 and Ti2Ni3 precipitates upon aging at lower temperatures. Cold work promotes Ti2Ni3 precipitation during aging. Compared to the as-drawn material, the fully annealed material shows higher strain recovery and elongation after aging for a short amount of time.

AB - A cold NiTiTa alloy was found to be very brittle in the fully annealed condition due to its high-austenite stability, which suppressed stress-induced-martensite transformation and dislocation slip. However, ductility and super-elasticity are largely improved by formation of Ti3Ni4 and Ti2Ni3 precipitates upon aging at lower temperatures. Cold work promotes Ti2Ni3 precipitation during aging. Compared to the as-drawn material, the fully annealed material shows higher strain recovery and elongation after aging for a short amount of time.

UR - http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000811421400001

U2 - 10.1007/s11661-022-06738-7

DO - 10.1007/s11661-022-06738-7

M3 - RGC 21 - Publication in refereed journal

SN - 1073-5623

JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

ER -

Aging Enhanced Super-Elasticity and Ductility of a Cold NiTiTa Alloy

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