Sintering parameter optimization of Ti-6Al-4V metal injection molding for highest strength using palm stearin binder

N. H Mohamad Nor, Norhamidi Muhamad, Ahmad Kamal Ariffin Mohd Ihsan, K. R. Jamaludin

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

17 Citations (Scopus)

Abstract

This paper presents an optimization of sintering parameters for the best sintered strength of Ti-6Al-4V powder mixed with 60wt% of palm stearin binder and 40wt% of polyethylene by metal injection moulding (MIM) technique. The mechanical properties of the sintered part are resulted from tremendous densification of the sample. Sintering parameters have been optimized using Taguchi method of L 9 (3 4) orthogonal array. The analysis of variance (ANOVA) was employed to determine the significant levels (α) and its contribution to the variables of the final strength. The study demonstrated that sintering temperature was the most influential variable contributes to the best final strength, followed by heating rate, dwelling time and cooling temperature. Based on these results, samples displayed yield strength of 934.3MPa, and a plastic elongation of more than 10% were produced. These values meet the requirements of the ASTM B348-02 for titanium alloy medical grade.

Original languageEnglish
Title of host publicationProcedia Engineering
PublisherElsevier Ltd
Pages359-364
Number of pages6
Volume68
DOIs
Publication statusPublished - 2013
Event2013 1st Malaysian International Tribology Conference, MITC 2013 - Kota Kinabalu, Sabah, Malaysia
Duration: 18 Nov 201320 Nov 2013

Other

Other2013 1st Malaysian International Tribology Conference, MITC 2013
CountryMalaysia
CityKota Kinabalu, Sabah
Period18/11/1320/11/13

Fingerprint

Metal molding
Injection molding
Binders
Sintering
Taguchi methods
Analysis of variance (ANOVA)
Heating rate
Densification
Titanium alloys
Yield stress
Polyethylenes
Elongation
Plastics
Cooling
Powders
Mechanical properties
Temperature

Keywords

  • Metal injection molding
  • Palm stearin
  • Taguchi method
  • Ti-6Al-4Vpowder

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Sintering parameter optimization of Ti-6Al-4V metal injection molding for highest strength using palm stearin binder. / Nor, N. H Mohamad; Muhamad, Norhamidi; Mohd Ihsan, Ahmad Kamal Ariffin; Jamaludin, K. R.

Procedia Engineering. Vol. 68 Elsevier Ltd, 2013. p. 359-364.

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

Nor, NHM, Muhamad, N, Mohd Ihsan, AKA & Jamaludin, KR 2013, Sintering parameter optimization of Ti-6Al-4V metal injection molding for highest strength using palm stearin binder. in Procedia Engineering. vol. 68, Elsevier Ltd, pp. 359-364, 2013 1st Malaysian International Tribology Conference, MITC 2013, Kota Kinabalu, Sabah, Malaysia, 18/11/13. https://doi.org/10.1016/j.proeng.2013.12.192
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AB - This paper presents an optimization of sintering parameters for the best sintered strength of Ti-6Al-4V powder mixed with 60wt% of palm stearin binder and 40wt% of polyethylene by metal injection moulding (MIM) technique. The mechanical properties of the sintered part are resulted from tremendous densification of the sample. Sintering parameters have been optimized using Taguchi method of L 9 (3 4) orthogonal array. The analysis of variance (ANOVA) was employed to determine the significant levels (α) and its contribution to the variables of the final strength. The study demonstrated that sintering temperature was the most influential variable contributes to the best final strength, followed by heating rate, dwelling time and cooling temperature. Based on these results, samples displayed yield strength of 934.3MPa, and a plastic elongation of more than 10% were produced. These values meet the requirements of the ASTM B348-02 for titanium alloy medical grade.

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