Crystallographic Peculiarities of β-α Transformation in Brass Induced by Hot Extrusion

Abstract:

Structure-texture states in brass rods after hot extrusion and air-cooling have been investigated with the orientation microscopy (EBSD). In the examined samples, a significant concentration of β-phase with the lattice, close to bcc and fcc α-phase, has been detected. The β-phase texture consisted of the main components: two close to {110}<110> and {001}<110>. The α-phase texture consisted of the main components: close to {001}<100> and two close {110}<111>. The analysis of crystallographic relationship of the texture components of β-and α-phases demonstrates that they may all be obtained, in accordance with the orientation relations, which are intermediate between the Kurdjumov-Sachs and Nishiyama-Wasserman types It is assumed that β-α transformation began in β-phase at coincident site lattice Σ3 and Σ33a boundaries.

• Periodical: Solid State Phenomena (Volume 299)
• Pages: 541-545
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.299.541
• Online since: January 2020
• Authors: Mikhail L. Lobanov, S.V. Danilov*, Vladimir I. Pastukhov
• Keywords: Brass, CSL Boundaries, EBSD, Extrusion, Orientation Relationship, Phase Transformation, Texture

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