A Study of Microstructure Evolution for Mg Alloy Subjecting to Multi-Pass Equal Channel Angular Extrusion

Abstract Equal channel angular extrusion (ECAE) has been recognized as one of the effective ways for grain refinement. The microstructures after ECAE have been studied for many alloys with relating to mechanical properties. However, the evolution of microstructures and their relationship with the prior conditions are rarely studied. In the present work, the microstructures and tensile behavior of a Mg alloy, AZ31, were investigated after each pass of ECAE. The results revealed an unreported rule that the alloy follows for texture evolution, where the basal texture or namely the focused c-axis orients 45° for each ECAE process, regardless of the prior microstructure. This implies that the texture or grain orientation development under ECAE could be irrelevant with shearing, but have relation to rotation. The tensile behavior of the extruded samples with different passes has been found to fit very well with the microstructure, i.e., the varying yield strengths are highly related with the texture..

Medienart:

E-Artikel

Erscheinungsjahr:

2022

Erschienen:

2022

Enthalten in:

Zur Gesamtaufnahme - volume:76

Enthalten in:

Transactions of the Indian Institute of Metals - 76(2022), 1 vom: 29. Aug., Seite 165-173

Sprache:

Englisch

Beteiligte Personen:

Liu, Yongji [VerfasserIn]
Heng, Zhonghao [VerfasserIn]
He, Yupeng [VerfasserIn]
Dong, Ziming [VerfasserIn]
Jiang, Hailong [VerfasserIn]
Zeng, Zhigang [VerfasserIn]
Shen, Jianghua [VerfasserIn]

Links:

Volltext [lizenzpflichtig]

Themen:

ECAE
Mechanical properties
Mg alloy
Microstructure
Texture

Anmerkungen:

© The Indian Institute of Metals - IIM 2022. Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

doi:

10.1007/s12666-022-02711-5

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

OLC2133463259

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