Textural Evolution Evaluated by EBSD and XRD after Thermal Treatment in Ni-Ti Shape Memory Alloy

Karimbi Koosappa Mahesh; Francisco Manuel Braz Fernandes

doi:10.4028/www.scientific.net/MSF.702-703.884

Textural Evolution Evaluated by EBSD and XRD after Thermal Treatment in Ni-Ti Shape Memory Alloy

Karimbi Koosappa Mahesh, Francisco Manuel Braz Fernandes

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Citation (Scopus)

Abstract

The Nickel-Titanium (Ni-Ti) alloys are the most attractive amongst shape memory alloys (SMA) due to their good functional properties coupled with high strength and good ductility. The transformation temperatures in Ni-Ti SMA can be altered by chemical composition and thermal and/or mechanical treatments adequate to obtain reversible martensitic transformation in one or more steps. The goal of the present work is to investigate the evolution of texture in Ni-Rich Ni-Ti (50.8at%Ni-Ti) SMA showing different phase transformation temperatures as a result of different thermal/mechanical history: straight-annealed (as-received condition) and subsequent thermal treatment at 500oC for 30 minutes in air. The microstructural and textural results were obtained by Electron Backscattering Diffraction on Scanning Electronic Microscopy (ESBD/SEM) and by X-Ray Diffraction (XRD) at room temperature. Mechanical properties were measured by Vickers micro hardness tests at room temperature.

Original language	Unknown
Title of host publication	Materials Science Forum
Pages	884-887
Volume	702-703
DOIs	https://doi.org/10.4028/www.scientific.net/MSF.702-703.884
Publication status	Published - 1 Jan 2012
Event	16th International Conference on the Textures of Materials (ICOTOM 16) - Duration: 1 Jan 2011 → …

Conference

Conference	16th International Conference on the Textures of Materials (ICOTOM 16)
Period	1/01/11 → …

Access to Document

10.4028/www.scientific.net/MSF.702-703.884

Cite this

@inproceedings{ec89495b760f4faca5dc1820d9746aff,

title = "Textural Evolution Evaluated by EBSD and XRD after Thermal Treatment in Ni-Ti Shape Memory Alloy",

abstract = "The Nickel-Titanium (Ni-Ti) alloys are the most attractive amongst shape memory alloys (SMA) due to their good functional properties coupled with high strength and good ductility. The transformation temperatures in Ni-Ti SMA can be altered by chemical composition and thermal and/or mechanical treatments adequate to obtain reversible martensitic transformation in one or more steps. The goal of the present work is to investigate the evolution of texture in Ni-Rich Ni-Ti (50.8at%Ni-Ti) SMA showing different phase transformation temperatures as a result of different thermal/mechanical history: straight-annealed (as-received condition) and subsequent thermal treatment at 500oC for 30 minutes in air. The microstructural and textural results were obtained by Electron Backscattering Diffraction on Scanning Electronic Microscopy (ESBD/SEM) and by X-Ray Diffraction (XRD) at room temperature. Mechanical properties were measured by Vickers micro hardness tests at room temperature.",

keywords = "XRD, microstructure, texture, Ni-Ti, shape memory alloy, EBSD",

author = "Mahesh, {Karimbi Koosappa} and {Braz Fernandes}, {Francisco Manuel}",

year = "2012",

month = jan,

day = "1",

doi = "10.4028/www.scientific.net/MSF.702-703.884",

language = "Unknown",

volume = "702-703",

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booktitle = "Materials Science Forum",

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T1 - Textural Evolution Evaluated by EBSD and XRD after Thermal Treatment in Ni-Ti Shape Memory Alloy

AU - Mahesh, Karimbi Koosappa

AU - Braz Fernandes, Francisco Manuel

PY - 2012/1/1

Y1 - 2012/1/1

N2 - The Nickel-Titanium (Ni-Ti) alloys are the most attractive amongst shape memory alloys (SMA) due to their good functional properties coupled with high strength and good ductility. The transformation temperatures in Ni-Ti SMA can be altered by chemical composition and thermal and/or mechanical treatments adequate to obtain reversible martensitic transformation in one or more steps. The goal of the present work is to investigate the evolution of texture in Ni-Rich Ni-Ti (50.8at%Ni-Ti) SMA showing different phase transformation temperatures as a result of different thermal/mechanical history: straight-annealed (as-received condition) and subsequent thermal treatment at 500oC for 30 minutes in air. The microstructural and textural results were obtained by Electron Backscattering Diffraction on Scanning Electronic Microscopy (ESBD/SEM) and by X-Ray Diffraction (XRD) at room temperature. Mechanical properties were measured by Vickers micro hardness tests at room temperature.

AB - The Nickel-Titanium (Ni-Ti) alloys are the most attractive amongst shape memory alloys (SMA) due to their good functional properties coupled with high strength and good ductility. The transformation temperatures in Ni-Ti SMA can be altered by chemical composition and thermal and/or mechanical treatments adequate to obtain reversible martensitic transformation in one or more steps. The goal of the present work is to investigate the evolution of texture in Ni-Rich Ni-Ti (50.8at%Ni-Ti) SMA showing different phase transformation temperatures as a result of different thermal/mechanical history: straight-annealed (as-received condition) and subsequent thermal treatment at 500oC for 30 minutes in air. The microstructural and textural results were obtained by Electron Backscattering Diffraction on Scanning Electronic Microscopy (ESBD/SEM) and by X-Ray Diffraction (XRD) at room temperature. Mechanical properties were measured by Vickers micro hardness tests at room temperature.

KW - XRD

KW - microstructure

KW - texture

KW - Ni-Ti

KW - shape memory alloy

KW - EBSD

U2 - 10.4028/www.scientific.net/MSF.702-703.884

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BT - Materials Science Forum

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