Construction of processing maps with high precision for Ti-10V-2Fe-3Al alloy

Toshiyuki Akanuma, Hiroaki Matsumoto, Akihiko Chiba, Ikuhiro Inagaki, Yoshihisa Shirai, Takashi Maeda

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

Hot deformation behavior of Ti-10V-2Fe-3Al was evaluated with processing maps. Ti-10V-2Fe-3Al is a metastable (3-titanium alloy for aerospace application. In developing the maps, we applied the new friction and thermal correction method found by Li et al. and Mataya et al. to make authentic stress-strain curves. The cases for the as hot-forged Ti-10V-2Fe-3Al alloy and the Ti-10V-2Fe-3Al alloy annealed at β-single phase temperature (950°C) were evaluated in this work. Cylindrical specimens were machined and then compression tests were carried out in the temperature range of 700°C-1000°C and in the strain rate range 0. 001-10s-1 using a computer-aided hot forging simulator (Thermec Master Z). Micro-structure of as-hot forged specimen exhibited a duplex α + β structure. Microstructures of the sample after compression below the β-transus showed equiaxed α+β structure. On the other hand,microstructures after compression at and above the β-transus revealed the almost fully mar-tensite structure especially at higher strain more than 1s-1. There was a difference in the peaks in power dissipation maps and the regions in instability maps before and after compensation. Comparing the compressed microstuructures and the processing maps, it was found that the deformation is dominated by dynamic recovery or continuous dynamic recrystallization.

本文言語English
ホスト出版物のタイトルTi 2011 - Proceedings of the 12th World Conference on Titanium
ページ269-273
ページ数5
出版ステータスPublished - 2012 12 1
イベント12th World Conference on Titanium, Ti 2011 - Beijing, China
継続期間: 2011 6 192011 6 24

出版物シリーズ

名前Ti 2011 - Proceedings of the 12th World Conference on Titanium
1

Other

Other12th World Conference on Titanium, Ti 2011
国/地域China
CityBeijing
Period11/6/1911/6/24

ASJC Scopus subject areas

  • セラミックおよび複合材料

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