Fabrication of NiTi shape memory alloy by Micro-FAST

Kunlan Huang, Yi Qin, Jie Zhao, Muhammad Bin Zulkipli, Hasan Hijji

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

1 Citation (Scopus)

Abstract

A NiTi shape memory alloy, known as nitinol, has been intensively studied for last five decades. The NiTi alloy with large size is commonly produced by vacuum sintering, thermal explosion mode of self-propagating high-temperature synthesis (TE-SHS) and spark plasma sintering (SPS). These methods are, however, rarely utilized for the forming of miniature and micro-sized components and have their own limits and disadvantages, such as long process chains and low efficiency with the processes. In the study reported in this paper, an innovation in rapid powder consolidation technology, called Micro-FAST (combining micro-forming and electric-current activated sintering techniques (FAST)) is introduced for the forming of micro-components in which the loose powders are loaded directly into the die, followed by electric-sintering. In the study, Φ4.0 mm × 4.0 mm miniature cylinders were formed with pre-alloyed NiTi powders. Sintered sample with relative density of 98.65% has been fabricated at a sintering temperature of 1150 °C in a relatively short cycle time (119.5 s). Based on the results of SEM and XRD, it was found that the densified samples with Ni3Ti, NiTi and NiTi2 phases were produced.
LanguageEnglish
Title of host publication4th International Conference on New Forming Technology (ICNFT 2015)
EditorsY. Qin, A. Dean, J. Lin, S. J. Yuan, F. Vollertsen
Number of pages7
DOIs
Publication statusPublished - 10 Aug 2015

Publication series

NameMATEC Web of Conferences
PublisherEDP Sciences
Volume21

Fingerprint

Electric currents
Shape memory effect
Sintering
Fabrication
Powders
Spark plasma sintering
Consolidation
Explosions
Innovation
Vacuum
Temperature
Scanning electron microscopy

Keywords

  • fabrication
  • nitinol
  • alloys
  • vacuum sintering
  • thermal explosion mode
  • spark plasma sintering
  • microforming
  • nickel
  • titanium

Cite this

Huang, K., Qin, Y., Zhao, J., Bin Zulkipli, M., & Hijji, H. (2015). Fabrication of NiTi shape memory alloy by Micro-FAST. In Y. Qin, A. Dean, J. Lin, S. J. Yuan, & F. Vollertsen (Eds.), 4th International Conference on New Forming Technology (ICNFT 2015) [10003] (MATEC Web of Conferences; Vol. 21). https://doi.org/10.1051/matecconf/20152110003
Huang, Kunlan ; Qin, Yi ; Zhao, Jie ; Bin Zulkipli, Muhammad ; Hijji, Hasan. / Fabrication of NiTi shape memory alloy by Micro-FAST. 4th International Conference on New Forming Technology (ICNFT 2015). editor / Y. Qin ; A. Dean ; J. Lin ; S. J. Yuan ; F. Vollertsen. 2015. (MATEC Web of Conferences).
@inproceedings{9cdaa15e4bb44fdc92bd72ce009c88c8,
title = "Fabrication of NiTi shape memory alloy by Micro-FAST",
abstract = "A NiTi shape memory alloy, known as nitinol, has been intensively studied for last five decades. The NiTi alloy with large size is commonly produced by vacuum sintering, thermal explosion mode of self-propagating high-temperature synthesis (TE-SHS) and spark plasma sintering (SPS). These methods are, however, rarely utilized for the forming of miniature and micro-sized components and have their own limits and disadvantages, such as long process chains and low efficiency with the processes. In the study reported in this paper, an innovation in rapid powder consolidation technology, called Micro-FAST (combining micro-forming and electric-current activated sintering techniques (FAST)) is introduced for the forming of micro-components in which the loose powders are loaded directly into the die, followed by electric-sintering. In the study, Φ4.0 mm × 4.0 mm miniature cylinders were formed with pre-alloyed NiTi powders. Sintered sample with relative density of 98.65{\%} has been fabricated at a sintering temperature of 1150 °C in a relatively short cycle time (119.5 s). Based on the results of SEM and XRD, it was found that the densified samples with Ni3Ti, NiTi and NiTi2 phases were produced.",
keywords = "fabrication, nitinol, alloys, vacuum sintering, thermal explosion mode, spark plasma sintering, microforming, nickel, titanium",
author = "Kunlan Huang and Yi Qin and Jie Zhao and {Bin Zulkipli}, Muhammad and Hasan Hijji",
year = "2015",
month = "8",
day = "10",
doi = "10.1051/matecconf/20152110003",
language = "English",
isbn = "9782759818235",
series = "MATEC Web of Conferences",
publisher = "EDP Sciences",
editor = "Y. Qin and A. Dean and J. Lin and Yuan, {S. J.} and F. Vollertsen",
booktitle = "4th International Conference on New Forming Technology (ICNFT 2015)",

}

Huang, K, Qin, Y, Zhao, J, Bin Zulkipli, M & Hijji, H 2015, Fabrication of NiTi shape memory alloy by Micro-FAST. in Y Qin, A Dean, J Lin, SJ Yuan & F Vollertsen (eds), 4th International Conference on New Forming Technology (ICNFT 2015)., 10003, MATEC Web of Conferences, vol. 21. https://doi.org/10.1051/matecconf/20152110003

Fabrication of NiTi shape memory alloy by Micro-FAST. / Huang, Kunlan; Qin, Yi; Zhao, Jie; Bin Zulkipli, Muhammad; Hijji, Hasan.

4th International Conference on New Forming Technology (ICNFT 2015). ed. / Y. Qin; A. Dean; J. Lin; S. J. Yuan; F. Vollertsen. 2015. 10003 (MATEC Web of Conferences; Vol. 21).

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

TY - GEN

T1 - Fabrication of NiTi shape memory alloy by Micro-FAST

AU - Huang, Kunlan

AU - Qin, Yi

AU - Zhao, Jie

AU - Bin Zulkipli, Muhammad

AU - Hijji, Hasan

PY - 2015/8/10

Y1 - 2015/8/10

N2 - A NiTi shape memory alloy, known as nitinol, has been intensively studied for last five decades. The NiTi alloy with large size is commonly produced by vacuum sintering, thermal explosion mode of self-propagating high-temperature synthesis (TE-SHS) and spark plasma sintering (SPS). These methods are, however, rarely utilized for the forming of miniature and micro-sized components and have their own limits and disadvantages, such as long process chains and low efficiency with the processes. In the study reported in this paper, an innovation in rapid powder consolidation technology, called Micro-FAST (combining micro-forming and electric-current activated sintering techniques (FAST)) is introduced for the forming of micro-components in which the loose powders are loaded directly into the die, followed by electric-sintering. In the study, Φ4.0 mm × 4.0 mm miniature cylinders were formed with pre-alloyed NiTi powders. Sintered sample with relative density of 98.65% has been fabricated at a sintering temperature of 1150 °C in a relatively short cycle time (119.5 s). Based on the results of SEM and XRD, it was found that the densified samples with Ni3Ti, NiTi and NiTi2 phases were produced.

AB - A NiTi shape memory alloy, known as nitinol, has been intensively studied for last five decades. The NiTi alloy with large size is commonly produced by vacuum sintering, thermal explosion mode of self-propagating high-temperature synthesis (TE-SHS) and spark plasma sintering (SPS). These methods are, however, rarely utilized for the forming of miniature and micro-sized components and have their own limits and disadvantages, such as long process chains and low efficiency with the processes. In the study reported in this paper, an innovation in rapid powder consolidation technology, called Micro-FAST (combining micro-forming and electric-current activated sintering techniques (FAST)) is introduced for the forming of micro-components in which the loose powders are loaded directly into the die, followed by electric-sintering. In the study, Φ4.0 mm × 4.0 mm miniature cylinders were formed with pre-alloyed NiTi powders. Sintered sample with relative density of 98.65% has been fabricated at a sintering temperature of 1150 °C in a relatively short cycle time (119.5 s). Based on the results of SEM and XRD, it was found that the densified samples with Ni3Ti, NiTi and NiTi2 phases were produced.

KW - fabrication

KW - nitinol

KW - alloys

KW - vacuum sintering

KW - thermal explosion mode

KW - spark plasma sintering

KW - microforming

KW - nickel

KW - titanium

UR - http://www.icnft2015.com/

U2 - 10.1051/matecconf/20152110003

DO - 10.1051/matecconf/20152110003

M3 - Conference contribution book

SN - 9782759818235

T3 - MATEC Web of Conferences

BT - 4th International Conference on New Forming Technology (ICNFT 2015)

A2 - Qin, Y.

A2 - Dean, A.

A2 - Lin, J.

A2 - Yuan, S. J.

A2 - Vollertsen, F.

ER -

Huang K, Qin Y, Zhao J, Bin Zulkipli M, Hijji H. Fabrication of NiTi shape memory alloy by Micro-FAST. In Qin Y, Dean A, Lin J, Yuan SJ, Vollertsen F, editors, 4th International Conference on New Forming Technology (ICNFT 2015). 2015. 10003. (MATEC Web of Conferences). https://doi.org/10.1051/matecconf/20152110003