Influence of oxygen on microstructures of Ti-Mo-Cr alloy

Junaidi Syarif, Eko Kurniawan, Mohammad Rasidi Mohammad Rasani, Zainuddin Sajuri, Mohd. Zaidi Omar, Sri Harjanto

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

1 Citation (Scopus)

Abstract

In this study, the effect of oxygen addition on the microstructures of Ti-18%Mo-10%Cr alloy was investigated. The alloy was fabricated by a powder metallurgy method. The samples were subjected to sintering at 1300°C for 4 hours and furnace cooling. A Bo-Md method was initially applied for predicting stable phase. Calculation using the Bo-Md method showed that Ti-18%Mo- 10%Cr alloy have bcc (β) phase at ambient temperature. All samples with various oxygen contents exhibited needle-like structures within equiaxed grains. The increase of oxygen content promoted formation of porosity in the α phase. Calculation of phase stability using JMatPro™ showed that the decrease of β phase's stability was not due to formation of the α phase on sintering, but due to promotion of nucleation and grain growth of diffusional α phase upon furnace cooling. It was also shown that vol.% of porosity of the alloy slightly increased with increasing oxygen content. Therefore, the increase of oxygen concentration could accelerate the formation of α phase and reduce the alloy's density. The hardness increased as the oxygen concentration increased. The increase of the hardness might be due to combination of the solid solution hardening of oxygen and the precipitation hardening of α phase.

Original languageEnglish
Title of host publicationAdvanced Materials Research
PublisherTrans Tech Publications
Pages613-616
Number of pages4
Volume896
ISBN (Print)9783038350316
DOIs
Publication statusPublished - 2014
Event2013 International Conference on Advanced Materials Science and Technology, ICAMST 2013 - Yogyakarta
Duration: 17 Sep 201318 Sep 2013

Publication series

NameAdvanced Materials Research
Volume896
ISSN (Print)10226680

Other

Other2013 International Conference on Advanced Materials Science and Technology, ICAMST 2013
CityYogyakarta
Period17/9/1318/9/13

Fingerprint

Microstructure
Oxygen
Phase stability
Furnaces
Sintering
Porosity
Hardness
Cooling
Age hardening
Powder metallurgy
Grain growth
Needles
Hardening
Solid solutions
Nucleation
Temperature

Keywords

  • B phase
  • Microstructure
  • Oxygen
  • Pores
  • Ti alloy

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Syarif, J., Kurniawan, E., Mohammad Rasani, M. R., Sajuri, Z., Omar, M. Z., & Harjanto, S. (2014). Influence of oxygen on microstructures of Ti-Mo-Cr alloy. In Advanced Materials Research (Vol. 896, pp. 613-616). (Advanced Materials Research; Vol. 896). Trans Tech Publications. https://doi.org/10.4028/www.scientific.net/AMR.896.613

Influence of oxygen on microstructures of Ti-Mo-Cr alloy. / Syarif, Junaidi; Kurniawan, Eko; Mohammad Rasani, Mohammad Rasidi; Sajuri, Zainuddin; Omar, Mohd. Zaidi; Harjanto, Sri.

Advanced Materials Research. Vol. 896 Trans Tech Publications, 2014. p. 613-616 (Advanced Materials Research; Vol. 896).

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

Syarif, J, Kurniawan, E, Mohammad Rasani, MR, Sajuri, Z, Omar, MZ & Harjanto, S 2014, Influence of oxygen on microstructures of Ti-Mo-Cr alloy. in Advanced Materials Research. vol. 896, Advanced Materials Research, vol. 896, Trans Tech Publications, pp. 613-616, 2013 International Conference on Advanced Materials Science and Technology, ICAMST 2013, Yogyakarta, 17/9/13. https://doi.org/10.4028/www.scientific.net/AMR.896.613
Syarif J, Kurniawan E, Mohammad Rasani MR, Sajuri Z, Omar MZ, Harjanto S. Influence of oxygen on microstructures of Ti-Mo-Cr alloy. In Advanced Materials Research. Vol. 896. Trans Tech Publications. 2014. p. 613-616. (Advanced Materials Research). https://doi.org/10.4028/www.scientific.net/AMR.896.613
Syarif, Junaidi ; Kurniawan, Eko ; Mohammad Rasani, Mohammad Rasidi ; Sajuri, Zainuddin ; Omar, Mohd. Zaidi ; Harjanto, Sri. / Influence of oxygen on microstructures of Ti-Mo-Cr alloy. Advanced Materials Research. Vol. 896 Trans Tech Publications, 2014. pp. 613-616 (Advanced Materials Research).
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