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Microtexture Development and Flow Stress Saturation during Triaxial Forging of an Al-3Mg-Sc(Zr) Alloy

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Abstract:

An Al-3%Mg-0.25%Sc-0.12%Zr alloy was deformed by triaxial forging at 20-400°C up to strains of about 3. A study of its textural evolution reveals the tendency towards three symmetrical variants of a <110><1 10 ><001> component. This experimental observation is supported by a 3D spatially resolved crystal plasticity analysis. Samples strained at room temperature undergo grain fragmentation in the form of fine substructures and relatively weak textures. Conversely, at 300°C and above, more homogeneous intergranular deformation and rotations give rise to stronger textures. This eventually encourages grain coalescence and thus the development of interpenetrating “orientation chains”, creating a new type of microstructure. The influence of this texture development on the specific work hardening behaviour is discussed.

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Info:

Periodical:

Materials Science Forum (Volumes 546-549)

Pages:

793-800

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.546-549.793

Citation:

Cite this paper

Online since:

May 2007

Authors:

S. Ringeval, David Piot, Julian H. Driver

Keywords:

Al-Mg-Sc-Zr Alloy, Forging, Simulation, Texture, Work-Hardening

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