Effect of Microstructure Factor on Room-temperature Fracture Toughness of β-Ti Containing γ-TiAl Alloys

Presentation information

General Session

4.Mechanical Properties » Mechanical Properties of Materials and Sturucture

[G] Mechanical Properties of Materials and Sturucture

Thu. Mar 19, 2020 9:00 AM - 3:45 PM Rm. A (W321,2nd Flr., West Bldg.3)

座長:安田弘行(阪大）、高田尚記(名古屋大学)、三浦誠司(北海道大学)、金野泰幸(大阪府立大学)

11:00 AM - 11:15 AM

*YAMAGATA Ryosuke¹, NAKASHIMA Hirotoyo¹, TAKEMAYA Masao¹ (1. School of Materials and Chemical Technology, Tokyo Institute of Technology)

Keywords:TiAl基合金、室温破壊靱性、組織制御

β-Ti相を含むTiAl基合金中のβ/α₂/γ粒界組織の体積率を状態図に基づいて制御し，室温破壊靱性と組織因子の関係を調査した．結果，粒界上におけるγ相体積率の増加は破壊靱性の低下を招くことを明らかにした．

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