[J] 共同セッション：チタン・チタン合金

[J6] Unusual Hall-Petch relation of a Ti-6Al-2Sn-4Zr-2Mo-Si alloy with martensitic duplex (α+α”) microstructure: effects of grain size and texture.

*Irvin Sechepee¹、洋明 松本²、Vincent Velay³ (1. 香川大学（院生）、2. 香川大学創造工学部、3. アルビ鉱山大学)

キーワード：Martensite、Hall-Petch、Slip systems、Multiscale modeling、CRSS

A unique Hall-Petch relation is found in a Ti-6Al-2Sn-4Zr-2Mo-Si alloy with duplex (α+α”) microstructure. The causes are investigated by studying the deformation modes with multiscale modeling.