鋳造TiAl基合金の耐異物衝撃性に及ぼす合金元素の影響

• 川浦 宏之

  豊田中央研究所

• 西野 和彰

  豊田中央研究所

• 斎藤 卓

  豊田中央研究所

書誌事項

タイトル別名

• Effects of Alloying Elements on Foreign Object Damage Resistance of Cast-TiAl Base Alloys
• チュウゾウ TiAlキ ゴウキン ノ タイイブツ ショウゲキセイ ニ オヨボス ゴウキン ゲンソ ノ エイキョウ

抄録

The aim of the present study is to obtain new TiAl-base alloys that are more resistant to foreign object damage (FOD). Ballistic impact tests were performed on TiAl alloys under the conditions closely simulating those in the turbine wheel of an automotive turbocharger. Several parameters including impact velocity, thickness of test specimens, and proportion of aluminum and additional alloying elements (boron, niobium, and vanadium) in the alloys were varied. The addition of boron and niobium caused degradation in the FOD resistance. On the other hand, the FOD resistance of TiAl alloys was improved by vanadium additions. Furthermore, the particular balance of additional vanadium and aluminum percentage was found to be important in determining the FOD resistance of TiAl alloys. The improvement of FOD resistance by vanadium addition specifically is an increased resistance to crack propagation across the lamellar grains, which is due to serrated grain boundaries formed thereby.

収録刊行物

• 日本金属学会誌

  日本金属学会誌 66 (5), 451-458, 2002

  公益社団法人 日本金属学会

キーワード

• foreign object damage resistance
• impact
• TiAl-base alloys
• castings
• turbine wheels

詳細情報

• CRID: 1390001206492057984
• NII論文ID: 130007342488
• NII論文ID: 10008832990
• NII書誌ID: AN00187860
• DOI: 10.2320/jinstmet1952.66.5_451
• ISSN: 18806880
• ISSN: 24337501
• ISSN: 00214876
• NDL書誌ID: 6178959
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6178959
• Web Site: https://www.jstage.jst.go.jp/article/jinstmet1952/66/5/66_5_451/_pdf
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