The influence of NI-TI ratio on the reversible austenite-martensite transformation and mechanical properties produced by metal injection moulding

Rosliza Razali, Zulaila Abdullah, Istikamah Subuki, Norhamidi Muhamad, Muhammad Hussain Ismail

Research output: Contribution to journalArticle

Abstract

This paper highlights the influence of Ni-Ti ratio on the phase constituents, the reversible austenite-martensite transformation and mechanical properties produced by metal injection molding (MIM). The binder system used was mainly palm stearin with minor fraction of polyethylene. Injection moulding was done successfully at 130˚C to form tensile shape samples. It was followed by solvent extraction, thermal debinding at 500°C and subsequently sintered in high vacuum at 1100˚C. The result showed that as the Ni content increased, the fraction of austenite phase also increased owing to greater fraction of transient liquid phase formation during the sintering, thus improved the mechanical tensile properties. However, the reversible austenite to martensite phase transformation temperatures (PTTs) seemed to be broadened with increased Ni content due to formation of metastable R-phase.

Original languageEnglish
Pages (from-to)75-83
Number of pages9
JournalJurnal Teknologi
Volume76
Issue number10
DOIs
Publication statusPublished - 11 Oct 2015

Fingerprint

Metal molding
Injection molding
Martensite
Austenite
Mechanical properties
Solvent extraction
Tensile properties
Binders
Polyethylenes
Sintering
Phase transitions
Vacuum
Liquids
Temperature

Keywords

  • Austenite-martensite
  • Elemental
  • Metal injection moulding
  • NiTi alloy

ASJC Scopus subject areas

  • Engineering(all)

Cite this

The influence of NI-TI ratio on the reversible austenite-martensite transformation and mechanical properties produced by metal injection moulding. / Razali, Rosliza; Abdullah, Zulaila; Subuki, Istikamah; Muhamad, Norhamidi; Ismail, Muhammad Hussain.

In: Jurnal Teknologi, Vol. 76, No. 10, 11.10.2015, p. 75-83.

Research output: Contribution to journalArticle

Razali, Rosliza ; Abdullah, Zulaila ; Subuki, Istikamah ; Muhamad, Norhamidi ; Ismail, Muhammad Hussain. / The influence of NI-TI ratio on the reversible austenite-martensite transformation and mechanical properties produced by metal injection moulding. In: Jurnal Teknologi. 2015 ; Vol. 76, No. 10. pp. 75-83.
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