Martensitic transformation and magnetic transition of Co41Ni32Al27-xSix alloy

Fenghua Luo, Katsunari Oikawa, Kiyohito Ishida

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The effects of Si on the martensitic transformation and magnetic transition of Co41Ni32Al27-xSix alloys were investigated by optical micrography, DSC and VSM methods. The structure type of martensitic phase was determined by X-ray diffraction. Martensitic transformation temperatures of Co41Ni32Al27 alloys are obviously elevated by the substitute of Si for Al element, the addition of 1% Si can increase the martensitic transformation temperature by about 50 K. Curie points are also increased with increasing of Si content, 1% Si can increase the Curie temperature by 10 K. Martensites are all of ordered L10 structure, but the unit cell volumes are decreased with increasing Si content. The reason for above results were discussed.

Original languageEnglish
Pages (from-to)680-684
Number of pages5
JournalJinshu Xuebao/Acta Metallurgica Sinica
Volume41
Issue number7
Publication statusPublished - 2005 Jul 1
Externally publishedYes

Keywords

  • Co-Ni-Al-Si alloy
  • Ferromagnetic shape memory alloy
  • Martensite (L1)

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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