Correlation between solution treatment temperature, microstructure, and yield strength of forged ti-17 alloys

Yoko Yamabe-Mitarai, Syuji Kuroda, Norie Motohashi, Takanobu Hiroto, Akira Ishida, Hideyuki Murakami, Yoshio Itsumi

研究成果: Article査読

抄録

The Ti compressor disks of aviation jet engines are produced by forging. Their microstructure, which depends on the forging conditions, strongly affects their mechanical properties. In this study, changes in the microstructure of Ti-17 alloy as a result of different solution-treatment (ST) temperatures and the related tensile yield strengths were investigated to elucidate the correlation between the ST temperature, microstructure, and yield strength. Ti-17 alloys ingots were isothermally forged at 800 C and solution-treated at 750, 800, and 850 C. The microstructure and yield strength were investigated for samples subjected to different ST temperatures. The primary a phase formed during the ST, and the secondary a phase formed during the aging treatment at 620 C. The yield strength increased with increasing volume fraction of the primary a phase and increased further upon formation of the secondary a phase during the tensile test at room temperature. The correlation of the primary and secondary a phases with yield strength was clarified for tensile properties at room temperature, 450, and 600 C. An equation to predict the yield strength was constructed using the volume fraction of the primary and secondary a phases.

本文言語English
論文番号625
ジャーナルCrystals
11
6
DOI
出版ステータスPublished - 2021 6 1
外部発表はい

ASJC Scopus subject areas

  • 化学工学(全般)
  • 材料科学(全般)
  • 凝縮系物理学
  • 無機化学

フィンガープリント

「Correlation between solution treatment temperature, microstructure, and yield strength of forged ti-17 alloys」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル