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Tensile properties of L12 intermetallic foils fabricated by cold rolling

  • Yasuyuki Kaneno , Tadamichi Myoki and Takayuki Takasugi
Published/Copyright: June 11, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 99 Issue 11

Abstract

Polycrystalline L12-type Ni3(Si,Ti), Ni3Al and Co3Ti alloys prepared through thermomechanical processing from arc-melted ingots were successfully cold-rolled to thin foils with a thickness of less than 200 m. The cold-rolling with over 90 % reduction in thickness was possible without providing intermediate annealing. The cold-rolled foils showed high tensile strength (∼2 GPa) at room temperature although no plastic elongation was observed. The tensile strength of the annealed foils generally decreased acquiring a certain level of fracture strain. Room temperature fracture strain increased with increasing annealing temperature, and reached to 30 – 40 % by a high temperature annealing at 1173 K. Among three kinds of intermetallic alloys, the Ni3(Si, Ti) foil annealed around at 900 K exhibited an extremely high tensile strength and yield strength (over 2 GPa) with a reasonable fracture strain. Also, it was found that the fully-recrystallized Ni3(Si, Ti) and Co3Ti foils showed a strength anomaly at intermediate testing temperature. The observed tensile properties, especially tensile strength at low temperature as well as at high temperature for the present L12 intermetallic foils, were found to be superior to those for the conventional alloys such as nickel based alloys and stainless steels.

Keywords: Ni3(Si, Ti); Co3Ti; Ni3Al; L12 structure; Cold rolling; Tensile properties
* Correspondence address, Dr. Yasuyuki Kaneno, Department of Materials Science, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan, Tel.: +81 72 254 9316, Fax: +81 72 254 9912, E-mail:

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Received: 2007-8-18
Accepted: 2008-7-11
Published Online: 2013-06-11
Published in Print: 2008-11-01

© 2008, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.101757
Keywords for this article
Ni3(Si, Ti); Co3Ti; Ni3Al; L12 structure; Cold rolling; Tensile properties

Articles in the same Issue

  1. Contents
  2. Contents
  3. Basic
  4. A model to calculate the viscosity of silicate melts
  5. A model to calculate the viscosity of silicate melts
  6. A note on the application of the phase rule
  7. Thermodynamic properties of liquid silver–indium–tin alloys determined from emf measurements
  8. Unconstrained solidification and characterisation of near-eutectic Al–Cu–Ag alloys
  9. Tensile properties of L12 intermetallic foils fabricated by cold rolling
  10. Microstructural control of FeB-inoculated mottled low-alloy white iron by a design of experiments approach
  11. Applied
  12. Dislocation structure and crystallite size distribution in lath martensite determined by X-ray diffraction peak profile analysis
  13. Effect of minor addition of Pb upon interfacial reactions and mechanical properties at Sn-3.0Ag-0.5Cu/Cu and Sn-58Bi/Cu solder joints
  14. Elastic properties of braided ceramic matrix composites
  15. The influence of microstructural characteristics and contaminants on the mechanical properties and fracture topography of low cost Ti6Al4V alloy
  16. Microstructure and room temperature mechanical properties of Hf and Sn-doped Nb-20Ti-5Cr-3Al-18Si alloy
  17. The effect of alloying elements on constrained carbon equilibrium due to a quench and partition process
  18. Hardfacing behavior of Cr–Ni stainless steel with Co-based super alloys
  19. Development of SMD 32.768 kHz tuning fork-type crystals
  20. Notification
  21. DGM News
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