Influence of Anisotropy in the Elastic Strain Energy on Morphology of Microstructure in Spinodal Decomposition Alloys

• Kagawa Junichi

  Graduate School, Nagoya Institute of Technology

• Miyazaki Toru

  Department of Metallurgical Engineering, Nagoya Institute of Technology

• Mori Hirotaro

  Department of Metallurgical Engineering, Nagoya Institute of Technology

抄録

The elastic energy term, 2η² Y_[hkl], was experimentally measured for single crystals of Ni-37.6at% Cu-6.1at% Si and Ni-36.8at% Cu-7.6at% Al alloys by the pulse echo method using the ultrasonic sound wave, and an influence of the anisotropy of the energy on the metallographic morphology was investigated for the two alloys. The Ni–Cu–Si alloy produces the typical modulated structure having highly aligned zones, while the Ni–Cu–Al alloy forms the mottled structure possessing a more random zone arrangement. Such a morphological difference between the both alloys does not come from a difference in anisotropy of the elastic modulus Y_[hkl], but from a difference in the linear expansion coefficient per unit composition change η. On the Ni–Cu–Si alloy, η and anisotropy of the elastic modulus are large enough to produce the modulated structure, while in the Ni–Cu–Al alloy η is so small that the elastic energy does not make any influence on the morphology of the microstructure, although the anisotropy of the elastic modulus is fairly large.

収録刊行物

• Transactions of the Japan Institute of Metals

  Transactions of the Japan Institute of Metals 18 (10), 707-714, 1977

  社団法人 日本金属学会

キーワード

• General Engineering

詳細情報

• CRID: 1390282680095197568
• NII論文ID: 130003485535
• DOI: 10.2320/matertrans1960.18.707
• COI: 1:CAS:528:DyaE1cXhvFGrsrc%3D
• ISSN: 24324701
• ISSN: 00214434
• Web Site: https://www.jstage.jst.go.jp/article/matertrans1960/18/10/18_10_707/_pdf
• 本文言語コード: en
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