Effect of Growth Rate on Microstructure and Mechanical Properties of the Directionally Solidified Nb-Si Eutectic Alloy

Nobuaki Sekido, Yoshisato Kimura, Yoshinao Mishima

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)

Abstract

The development of ultra-high temperature structural materials having superior mechanical properties to the nickel based superalloys has been pursued in the niobium silicide based composites. The unidirectional solidification technique was performed on the (Nb)/Nb3Si eutectic alloy in the Nb-Si binary system. A continuity of Nb phases in the eutectic microstructure increases with decreasing a growth rate, which yields the enhancement of fracture toughness as well as high temperature strength. The mechanisms of microstructural formation, toughening, and strengthening are briefly discussed.

Original languageEnglish
Pages (from-to)327-332
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume753
Publication statusPublished - 2003 Nov 10
Externally publishedYes
EventDefect Properties and Related Phenomena in Intermetallic Alloys - Boston, MA, United States
Duration: 2002 Dec 32002 Dec 5

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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