Recrystallization Characteristics of Ti-50.9at%Ni Alloy Processed by Equal Channel Angular Extrusion

Zhi Guo Fan; Chao Ying Xie

doi:10.4028/www.scientific.net/AMR.26-28.385

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 26-28Recrystallization Characteristics of Ti-50.9at%Ni...

Recrystallization Characteristics of Ti-50.9at%Ni Alloy Processed by Equal Channel Angular Extrusion

Abstract:

The initial coarse grains of Ti-50.9at%Ni alloy were refined into submicron grains, small than 0.5 um in size, after eight passes Equal Channel Angular Extrusion (ECAE) at 500°C. Optical microscopy and high temperature DSC tests were applied to investigate recrystallization behavior. It is found that the recrystallization start (Rs) and recrystallization peak (Rp) temperatures of Ti-50.9at%Ni specimens processed by eight passes ECAE are lower than that of the samples processed by one pass ECAE. Ti-50.9at%Ni specimens processed by eight passes ECAE with submicron grains are characterized by higher stability and need less energy to finish recrystallization process.

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Periodical:

Advanced Materials Research (Volumes 26-28)

Pages:

385-388

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.26-28.385

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Online since:

October 2007

Authors:

Zhi Guo Fan, Chao Ying Xie

Keywords:

Equal Channel Angular Extrusion (ECAE), Grain Stability, Recrystallization, Ti-50.9at%Ni

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