Title

Tailoring grain boundary and resultant plasticity of pure iron by pulsed-electric-current treatment

Document Type

Journal Article

ISSN

10735623

Publisher

Springer Boston

School

School of Engineering

Comments

Originally published as: Yang, C., Zhao, Y. J., Wang, Z., Qu, S. G., Li, X. Q., Zhang, W. W., & Zhang, L. C. (2019). Tailoring grain boundary and resultant plasticity of pure iron by pulsed-electric-current treatment. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 50(2), 856-862. Original Article available here

Abstract

In general, annealing twins (Σ3 boundaries) are induced in face-centered cubic metals by thermal–mechanical processes. We report on the Σ3 boundary-induced plasticity enhancement of pure iron treated by a pulsed electric current subject to its allotropic transformation of α → γ → α. The behavior is attributed to an increased amount of Σ3 boundaries with the grain-boundary interconnection evolution from {112}/{112} to {110}/{110} resulting from the increasing pulsed-electric-current intensity. The results provide an alternative pathway to fabricate high-performance metallic materials by tailoring special grain boundaries.

DOI

10.1007/s11661-018-5012-6

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