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Influence of fine scale features on room temperature superplastic behaviour of an ultrafine-grained Al-30Zn alloy. / Bobruk, Elena V.; Sauvage, Xavier; Еникеев, Нариман Айратович; Valiev, Ruslan Z.

In: Materials Letters, Vol. 254, 01.11.2019, p. 329-331.

Research output: Contribution to journal › Article › peer-review

Harvard

Bobruk, EV, Sauvage, X, Еникеев, НА & Valiev, RZ 2019, 'Influence of fine scale features on room temperature superplastic behaviour of an ultrafine-grained Al-30Zn alloy', Materials Letters, vol. 254, pp. 329-331. https://doi.org/10.1016/j.matlet.2019.07.097

APA

Bobruk, E. V., Sauvage, X., Еникеев, Н. А., & Valiev, R. Z. (2019). Influence of fine scale features on room temperature superplastic behaviour of an ultrafine-grained Al-30Zn alloy. Materials Letters, 254, 329-331. https://doi.org/10.1016/j.matlet.2019.07.097

Vancouver

Bobruk EV, Sauvage X, Еникеев НА, Valiev RZ. Influence of fine scale features on room temperature superplastic behaviour of an ultrafine-grained Al-30Zn alloy. Materials Letters. 2019 Nov 1;254:329-331. https://doi.org/10.1016/j.matlet.2019.07.097

Author

Bobruk, Elena V. ; Sauvage, Xavier ; Еникеев, Нариман Айратович ; Valiev, Ruslan Z. / Influence of fine scale features on room temperature superplastic behaviour of an ultrafine-grained Al-30Zn alloy. In: Materials Letters. 2019 ; Vol. 254. pp. 329-331.

BibTeX

@article{61c98c4a4b8341e58901dd053daab5b3,
title = "Influence of fine scale features on room temperature superplastic behaviour of an ultrafine-grained Al-30Zn alloy",
abstract = "Two different ultrafine-grained states have been achieved in an Al-30Zn (wt%) alloy by high-pressure torsion (HPT) in different conditions. The material processed at room temperature exhibits a two phases mixture with Zn particles that have nucleated inside Al grains but also at triple lines and Zn segregation at grain boundaries. Under tensile stress at room temperature, this ultrafine grain structure gives rise to a superplastic behaviour with a total elongation exceeding 200%. Interestingly, further deformation by HPT at 50 °C leads to significantly finer intragranular Zn precipitates which affects the mechanical behavior reducing the elongation to failure down to only 70%. This transition in superplastic behaviour is attributed these fine scale Zn particles that should lead to a greater accumulation of dislocations and earlier failure.",
keywords = "Al-Zn alloy, Grain boundaries, Phase transformation, Superplasticity, Ultrafine-grained microstructure",
author = "Bobruk, {Elena V.} and Xavier Sauvage and Еникеев, {Нариман Айратович} and Valiev, {Ruslan Z.}",
year = "2019",
month = nov,
day = "1",
doi = "10.1016/j.matlet.2019.07.097",
language = "English",
volume = "254",
pages = "329--331",
journal = "Materials Letters",
issn = "0167-577X",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Influence of fine scale features on room temperature superplastic behaviour of an ultrafine-grained Al-30Zn alloy

AU - Bobruk, Elena V.

AU - Sauvage, Xavier

AU - Еникеев, Нариман Айратович

AU - Valiev, Ruslan Z.

PY - 2019/11/1

Y1 - 2019/11/1

N2 - Two different ultrafine-grained states have been achieved in an Al-30Zn (wt%) alloy by high-pressure torsion (HPT) in different conditions. The material processed at room temperature exhibits a two phases mixture with Zn particles that have nucleated inside Al grains but also at triple lines and Zn segregation at grain boundaries. Under tensile stress at room temperature, this ultrafine grain structure gives rise to a superplastic behaviour with a total elongation exceeding 200%. Interestingly, further deformation by HPT at 50 °C leads to significantly finer intragranular Zn precipitates which affects the mechanical behavior reducing the elongation to failure down to only 70%. This transition in superplastic behaviour is attributed these fine scale Zn particles that should lead to a greater accumulation of dislocations and earlier failure.

AB - Two different ultrafine-grained states have been achieved in an Al-30Zn (wt%) alloy by high-pressure torsion (HPT) in different conditions. The material processed at room temperature exhibits a two phases mixture with Zn particles that have nucleated inside Al grains but also at triple lines and Zn segregation at grain boundaries. Under tensile stress at room temperature, this ultrafine grain structure gives rise to a superplastic behaviour with a total elongation exceeding 200%. Interestingly, further deformation by HPT at 50 °C leads to significantly finer intragranular Zn precipitates which affects the mechanical behavior reducing the elongation to failure down to only 70%. This transition in superplastic behaviour is attributed these fine scale Zn particles that should lead to a greater accumulation of dislocations and earlier failure.

KW - Al-Zn alloy

KW - Grain boundaries

KW - Phase transformation

KW - Superplasticity

KW - Ultrafine-grained microstructure

UR - https://www.sciencedirect.com/science/article/pii/S0167577X19310845

UR - http://www.scopus.com/inward/record.url?scp=85069837641&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2019.07.097

DO - 10.1016/j.matlet.2019.07.097

M3 - Article

VL - 254

SP - 329

EP - 331

JO - Materials Letters

JF - Materials Letters

SN - 0167-577X

ER -

ID: 43825951