Investigation of the Cross-Sectional Structure and Isothermal Section at 1150°C of a Nb-Re-Si Alloy Fabricated Using a Tetra-Arc Furnace

• Saito Shigeru

  Laboratory of Advanced Materials for Cold Region, Hokkaido University of Science

• Takashima Toshiyuki

  Hokkaido University of Science

• Horiuchi Toshiaki

  Laboratory of Advanced Materials for Cold Region, Hokkaido University of Science

• Miura Seiji

  Faculty of Engineering, Hokkaido University

• Narita Toshio

  DBC System R&D Co., Ltd.

Bibliographic Information

Other Title

• テトラアーク引上炉を用いて作製したNb-Re-Si合金の断面組織と1150°Cにおける等温断面図の検討
• テトラアーク ヒキアゲロ オ モチイテ サクセイ シタ Nb-Re-Si ゴウキン ノ ダンメン ソシキ ト 1150℃ ニ オケル トウオン ダンメンズ ノ ケントウ

Abstract

Ternary Nb-Re-Si alloy samples were melted and pulled simultaneously in a tetra-arc furnace and rapidly water-quenched after heat treatment at 1150°C for 1200 h. The microstructures of the samples that had been water-quenched after heat treatment were observed and the Nb, Re and Si concentrations in the constituent phases were measured using an electron probe microanalyzer (EPMA). In the cross-sectional structure of the obtained alloy samples, the lower portion of the pulled part consists of Nb₅Si₃ and Nb-Re-Si ternary compound phases. By contrast, the upper portion consists of Nb₅Si₃ and Nb solid solution phases. The Nb solid-solution phase, Nb₅Si₃ and Nb-Re-Si ternary compound are in equilibrium. It was found that the solubility limit of Si in the Nb solid-solution phase ranges from 0.6 to 1.7 at%, while the solubility limit of Re in the Nb₅Si₃ phase is 1.3-2.0 at%. The maximum amount of Re in the Nb₅Si₃ phase in equilibrium with the Nb solid solution is about 0.9 at%.

Journal

• Journal of the Japan Institute of Metals and Materials

  Journal of the Japan Institute of Metals and Materials 82 (11), 409-414, 2018-11-01

  The Japan Institute of Metals and Materials

Keywords

• niobium-rhenium-silicon
• tetra-arc furnace
• Nb₅Si₃ phase
• niobium solid-solution phase

Details

• CRID: 1390845713013686400
• NII Article ID: 130007500793
• NII Book ID: AN00187860
• DOI: 10.2320/jinstmet.jaw201808
• ISSN: 18806880
• ISSN: 24337501
• ISSN: 00214876
• NDL BIB ID: 029333017
• Web Site: http://id.ndl.go.jp/bib/029333017
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I029333017
• Web Site: https://www.jstage.jst.go.jp/article/jinstmet/82/11/82_JAW201808/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed