Two-and three-dimensional grain growth in the cualmn shape memory alloy

Tomoe Kusama, Toshihiro Omori, Takashi Saito, Ikuo Ohnuma, Kiyohito Ishida, Ryosuke Kainuma

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


The normal grain growth behaviors at 750, 800 and 900°C in block and sheet samples of CuAlMn shape memory alloy with the bcc single-phase structure were investigated. The grain growth exponents, n, evaluated in the two-and three-dimensional grain growths were found to be larger than those in most other metals and were located between 10 and 18. Furthermore, the two-dimensional growth in thin sheet samples was much slower than the three-dimensional growth in block samples due to the grooves formed along grain boundaries on the specimen surface, these grooves constituting a hindrance to the movement.

Original languageEnglish
Pages (from-to)2044-2048
Number of pages5
JournalMaterials Transactions
Issue number10
Publication statusPublished - 2013


  • Copperaluminummanganese
  • Grain growth
  • Grooving
  • Shape memory alloy
  • Three-dimensional growth
  • Two-dimensional growth


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