Selective laser melting of Ni-rich NiTi: Selection of process parameters and the superelastic response

Narges Shayesteh Moghaddam; Soheil Saedi; Amirhesam Amerinatanzi; Ehsan Saghaian; Ahmadreza Jahadakbar; Haluk Karaca; Mohammad Elahinia

doi:10.1117/12.2305247

Selective laser melting of Ni-rich NiTi: Selection of process parameters and the superelastic response

Narges Shayesteh Moghaddam, Soheil Saedi, Amirhesam Amerinatanzi, Ehsan Saghaian, Ahmadreza Jahadakbar, Haluk Karaca, Mohammad Elahinia

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

4 Scopus citations

Abstract

Material and mechanical properties of NiTi shape memory alloys strongly depend on the fabrication process parameters and the resulting microstructure. In selective laser melting, the combination of parameters such as laser power, scanning speed, and hatch spacing determine the microstructural defects, grain size and texture. Therefore, processing parameters can be adjusted to tailor the microstructure and mechanical response of the alloy. In this work, NiTi samples were fabricated using Ni50.8Ti (at.%) powder via SLM PXM by Phenix/3D Systems and the effects of processing parameters were systematically studied. The relationship between the processing parameters and superelastic properties were investigated thoroughly. It will be shown that energy density is not the only parameter that governs the material response. It will be shown that hatch spacing is the dominant factor to tailor the superelastic response. It will be revealed that with the selection of right process parameters, perfect superelasticity with recoverable strains of up to 5.6% can be observed in the as-fabricated condition.

Original language	English
Title of host publication	Behavior and Mechanics of Multifunctional Materials and Composites XII
Editors	Hani E. Naguib
ISBN (Electronic)	9781510616882
DOIs	https://doi.org/10.1117/12.2305247
State	Published - 2018
Event	Behavior and Mechanics of Multifunctional Materials and Composites XII 2018 - Denver, United States Duration: Mar 5 2018 → Mar 8 2018

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	10596
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Behavior and Mechanics of Multifunctional Materials and Composites XII 2018
Country/Territory	United States
City	Denver
Period	3/5/18 → 3/8/18

Bibliographical note

Publisher Copyright:
© 2018 SPIE.

Keywords

Additive manufacturing
Biomedical implants
Ni-rich NiTi
Selective laser melting
Shape memory alloys
Superelasticity

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.2305247

Cite this

Shayesteh Moghaddam, N., Saedi, S., Amerinatanzi, A., Saghaian, E., Jahadakbar, A., Karaca, H., & Elahinia, M. (2018). Selective laser melting of Ni-rich NiTi: Selection of process parameters and the superelastic response. In H. E. Naguib (Ed.), Behavior and Mechanics of Multifunctional Materials and Composites XII Article 105960W (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10596). https://doi.org/10.1117/12.2305247

@inproceedings{4f9649915387426f8e74d9c9014a27f3,

title = "Selective laser melting of Ni-rich NiTi: Selection of process parameters and the superelastic response",

abstract = "Material and mechanical properties of NiTi shape memory alloys strongly depend on the fabrication process parameters and the resulting microstructure. In selective laser melting, the combination of parameters such as laser power, scanning speed, and hatch spacing determine the microstructural defects, grain size and texture. Therefore, processing parameters can be adjusted to tailor the microstructure and mechanical response of the alloy. In this work, NiTi samples were fabricated using Ni50.8Ti (at.%) powder via SLM PXM by Phenix/3D Systems and the effects of processing parameters were systematically studied. The relationship between the processing parameters and superelastic properties were investigated thoroughly. It will be shown that energy density is not the only parameter that governs the material response. It will be shown that hatch spacing is the dominant factor to tailor the superelastic response. It will be revealed that with the selection of right process parameters, perfect superelasticity with recoverable strains of up to 5.6% can be observed in the as-fabricated condition.",

keywords = "Additive manufacturing, Biomedical implants, Ni-rich NiTi, Selective laser melting, Shape memory alloys, Superelasticity",

author = "{Shayesteh Moghaddam}, Narges and Soheil Saedi and Amirhesam Amerinatanzi and Ehsan Saghaian and Ahmadreza Jahadakbar and Haluk Karaca and Mohammad Elahinia",

note = "Publisher Copyright: {\textcopyright} 2018 SPIE.; Behavior and Mechanics of Multifunctional Materials and Composites XII 2018 ; Conference date: 05-03-2018 Through 08-03-2018",

year = "2018",

doi = "10.1117/12.2305247",

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Shayesteh Moghaddam, N, Saedi, S, Amerinatanzi, A, Saghaian, E, Jahadakbar, A, Karaca, H & Elahinia, M 2018, Selective laser melting of Ni-rich NiTi: Selection of process parameters and the superelastic response. in HE Naguib (ed.), Behavior and Mechanics of Multifunctional Materials and Composites XII., 105960W, Proceedings of SPIE - The International Society for Optical Engineering, vol. 10596, Behavior and Mechanics of Multifunctional Materials and Composites XII 2018, Denver, United States, 3/5/18. https://doi.org/10.1117/12.2305247

Selective laser melting of Ni-rich NiTi: Selection of process parameters and the superelastic response. / Shayesteh Moghaddam, Narges; Saedi, Soheil; Amerinatanzi, Amirhesam et al.
Behavior and Mechanics of Multifunctional Materials and Composites XII. ed. / Hani E. Naguib. 2018. 105960W (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10596).

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

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T2 - Behavior and Mechanics of Multifunctional Materials and Composites XII 2018

AU - Shayesteh Moghaddam, Narges

AU - Saedi, Soheil

AU - Amerinatanzi, Amirhesam

AU - Saghaian, Ehsan

AU - Jahadakbar, Ahmadreza

AU - Karaca, Haluk

AU - Elahinia, Mohammad

PY - 2018

Y1 - 2018

N2 - Material and mechanical properties of NiTi shape memory alloys strongly depend on the fabrication process parameters and the resulting microstructure. In selective laser melting, the combination of parameters such as laser power, scanning speed, and hatch spacing determine the microstructural defects, grain size and texture. Therefore, processing parameters can be adjusted to tailor the microstructure and mechanical response of the alloy. In this work, NiTi samples were fabricated using Ni50.8Ti (at.%) powder via SLM PXM by Phenix/3D Systems and the effects of processing parameters were systematically studied. The relationship between the processing parameters and superelastic properties were investigated thoroughly. It will be shown that energy density is not the only parameter that governs the material response. It will be shown that hatch spacing is the dominant factor to tailor the superelastic response. It will be revealed that with the selection of right process parameters, perfect superelasticity with recoverable strains of up to 5.6% can be observed in the as-fabricated condition.

AB - Material and mechanical properties of NiTi shape memory alloys strongly depend on the fabrication process parameters and the resulting microstructure. In selective laser melting, the combination of parameters such as laser power, scanning speed, and hatch spacing determine the microstructural defects, grain size and texture. Therefore, processing parameters can be adjusted to tailor the microstructure and mechanical response of the alloy. In this work, NiTi samples were fabricated using Ni50.8Ti (at.%) powder via SLM PXM by Phenix/3D Systems and the effects of processing parameters were systematically studied. The relationship between the processing parameters and superelastic properties were investigated thoroughly. It will be shown that energy density is not the only parameter that governs the material response. It will be shown that hatch spacing is the dominant factor to tailor the superelastic response. It will be revealed that with the selection of right process parameters, perfect superelasticity with recoverable strains of up to 5.6% can be observed in the as-fabricated condition.

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M3 - Conference contribution

AN - SCOPUS:85047315324

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Behavior and Mechanics of Multifunctional Materials and Composites XII

A2 - Naguib, Hani E.

Y2 - 5 March 2018 through 8 March 2018

ER -

Shayesteh Moghaddam N, Saedi S, Amerinatanzi A, Saghaian E, Jahadakbar A, Karaca H et al. Selective laser melting of Ni-rich NiTi: Selection of process parameters and the superelastic response. In Naguib HE, editor, Behavior and Mechanics of Multifunctional Materials and Composites XII. 2018. 105960W. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2305247

Selective laser melting of Ni-rich NiTi: Selection of process parameters and the superelastic response

Abstract

Publication series

Conference

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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