Crystallographic Orientation of the Ε → Α' Martensitic (Athermal) Transformation in a FeMnAlSi Steel
Abstract
The presence of a thermal ε- and α-martensite (α') in the as-cast structure of a Fe-0.08C-1.95Si-15.1Mn-1.4Al-0.017N alloy has been revealed by electron backscattered diffraction analysis. The alloy exhibited two a thermal martensitic transformation described by γ → α' and γ → ε → α'. The Shoji-Nishiyama orientation relationship was observed between γ-austenite and ε-martensite, while α-martensite nucleated from γ-austenite exhibited a Kurdjumov-Sachs orientation relationship. Six crystallographic variants of α-martensite consisting of three twin-related variant pairs were observed in ε-bands. A planar parallelism of {0001}ε || {110}α' and a directional relation of 1 1 ̄ 1 α ' lying within 1 deg of 1 ̄ 2 1 ̄ 0 ε existed for these variants. © 2014 The Minerals, Metals & Materials Society and ASM International.
Recommended Citation
S. T. Pisarik and D. C. Van Aken, "Crystallographic Orientation of the Ε → Α' Martensitic (Athermal) Transformation in a FeMnAlSi Steel," Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, vol. 45, no. 8, pp. 3173 - 3178, Springer; ASM International, Jan 2014.
The definitive version is available at https://doi.org/10.1007/s11661-014-2303-4
Department(s)
Materials Science and Engineering
International Standard Serial Number (ISSN)
1073-5623
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Springer; ASM International, All rights reserved.
Publication Date
01 Jan 2014
Comments
National Science Foundation, Grant DMR-0723128