[J] JIM-ISIJ Joint Session:Titan and Its Alloys

[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, Hiroaki Matsumoto², Vincent Velay³ (1. Kagawa University, 2. Kagawa University, 3. IMT Albi)

Keywords: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.