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Journal of Materials Science

, Volume 26, Issue 5, pp 1173–1178 | Cite as

Mechanical properties of recrystallized L12-type Ni3(Si,Ti) intermetallics

  • Takayuki Takasugi
  • Osamu Izumi
  • Mitsuhiko Yoshida
Papers

Abstract

The mechanical properties of the Ni3(Si, Ti) alloys undoped and doped with 50 p.p.m. boron, both of which were polycrystalline specimens prepared by recrystallization, were investigated by tensile testing. The yield stress was found to increase with increasing test temperature to a maximum at 800 K, followed by a decrease. The tensile elongation was highest at room temperature and tended to decrease with increasing temperature for both alloys, but was consistently higher in the boron-doped Ni3(Si, Ti) alloys than in the undoped ones over all the test temperatures. The change in the ultimate tensile stress (UTS) with temperature was similar to that of tensile elongation. The transgranular fracture became dominant as the elongation increased, regardless of the alloys and the testing temperature. Thus, this work again verified that the alloying method proposed by the present authors is useful for improving the grain-boundary cohesion of L12-type ordered alloys.

Keywords

Polymer Mechanical Property Boron Recrystallization Tensile Testing 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman and Hall Ltd. 1991

Authors and Affiliations

  • Takayuki Takasugi
    • 1
  • Osamu Izumi
    • 1
  • Mitsuhiko Yoshida
    • 2
  1. 1.Institute for Materials ResearchTohoku UniversitySendaiJapan
  2. 2.Miyagi National College of TechnologyMiyagi PrefectureJapan

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