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説明:

Understanding the precise elastic modulus of individual γ and γ′ phases is crucial for estimating the elastic misfit between these phases, because it is a key factor in controlling the formation of raft structures and local stress/strain around γ′ precipitates. Despite its importance, research in this area remains limited. This study determines the elastic modulus of 6th generation Ni-base single crystal superalloy TMS-238 and its tie-lined γ and γ phases under equilibrium conditions above 900 °C. We fabricated TMS-238 and its tie-lined alloys with varying γ′ volume fractions. Using the rectangular parallelepiped resonance (RPR) method, we measured the elastic modulus from room temperature to 1100 °C. Elastic moduli between tie-lined phases were then estimated above 900 °C using composite models. Our findings were compared with those of Ni-Al binary alloys, Ni-Al-X ternary alloys, and multi-component systems, providing a comprehensive understanding of the elastic properties.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: Elastic moduli

刊行年月日: 2025-04-29

出版者: Elsevier BV

掲載誌:

• Materials Science and Engineering: A (ISSN: 09215093) vol. 941 148410

研究助成金:

• Advanced Low Carbon Technology Research and Development Program JPMJAL1302
• New Energy and Industrial Technology Development Organization JPNP21007
• Japan Science and Technology Corporation
• New Energy and Industrial Technology Development Organization
• Japan Science and Technology Agency

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1016/j.msea.2025.148410

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更新時刻: 2025-12-19 16:30:16 +0900

MDRでの公開時刻: 2025-12-19 14:11:47 +0900