Journal Article

PUBDB-2022-04733

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Evolución microestructural y envejecimiento dinámico por deformación en la aleación Mg-6%Gd- 1%Zn durante ensayos a tracción y compresión a temperaturas intermedias

Garcés, G. (Corresponding author)Extern* ; Pérez, P. ; Barea, R. ; Chávez, B. W. ; Medina, J.Extern* ; Adeva, P.

2018
Madrid

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Please use a persistent id in citations: doi:10.3989/revmetalm.124  doi:10.3204/PUBDB-2022-04733

Abstract: The Mg-6%Gd-1%Zn alloy exhibits flow serrations when strained at intermediate temperaturesdue to the dynamic strain ageing phenomenon. Such flow serrations during deformation need the simultaneousand competitive movement of diffusing solutes and mobile dislocations. Although the alloy examined hasa random texture, tension-compression asymmetry and significantly greater yield stress and work hardening incompression than in tension have been observed. During deformation at intermediate temperatures, and independentlyof the nature of the stress (tension or compression), the activation of <a>-dislocations and tensiletwin systems has been observed. The volume fraction of twins is always higher, however, in the case of compressiontesting. At the intermediate temperatures where flow serrations are observed, Gd and Zn atoms pindislocations as well as twins. Above 250 °C, the flow serrations disappear and g´ and g´´ precipitates form in thebasal plane which increase work hardening.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. Helmholtz-Zentrum Hereon (Hereon)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)

Experiment(s):

1. PETRA Beamline P07 (PETRA III)

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; DOAJ Seal ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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