One-step consolidation and precipitation hardening of an ultrafine-grained Al-Zn-Mg alloy powder by Spark Plasma Sintering

H. Queudet; S. Lemonnier; E. Barraud; J. Guyon; J. Ghanbaja; N. Allain; E. Gaffet

doi:10.1016/j.msea.2017.01.009

One-step consolidation and precipitation hardening of an ultrafine-grained Al-Zn-Mg alloy powder by Spark Plasma Sintering

H. Queudet
, S. Lemonnier
, E. Barraud
, J. Guyon
, J. Ghanbaja
, N. Allain
, E. Gaffet

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

Abstract

In the present work, ultrafine-grained Al-Zn-Mg alloy produced by high energy ball milling and Spark Plasma Sintering was synthesized. The Hall-Petch strengthening due to grain refinement (about 150 nm) is preserved and the Orowan's effect attributed to the presence of the hardening phase η’ is obtained in a single-step during the sintering. Maximum compression stresses as high as 736 MPa and 830 MPa were reached in quasistatic and dynamic conditions respectively. Hardness was increased from 124 HV5 for a consolidated coarse grained material to 196 HV for a consolidated ultrafine-grained (UFG) material. The mechanical properties obtained in this study were all superior to the ones of the reference AA7020-T651.

Original language	English
Pages (from-to)	227-234
Number of pages	8
Journal	Materials Science and Engineering: A
Volume	685
DOIs	https://doi.org/10.1016/j.msea.2017.01.009
Publication status	Published - 8 Feb 2017
Externally published	Yes

Keywords

Al alloy
High energy ball milling
Mechanical properties
Spark Plasma Sintering
Strengthening mechanism
Ultrafine grained materials

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10.1016/j.msea.2017.01.009

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title = "One-step consolidation and precipitation hardening of an ultrafine-grained Al-Zn-Mg alloy powder by Spark Plasma Sintering",

abstract = "In the present work, ultrafine-grained Al-Zn-Mg alloy produced by high energy ball milling and Spark Plasma Sintering was synthesized. The Hall-Petch strengthening due to grain refinement (about 150 nm) is preserved and the Orowan's effect attributed to the presence of the hardening phase η{\textquoteright} is obtained in a single-step during the sintering. Maximum compression stresses as high as 736 MPa and 830 MPa were reached in quasistatic and dynamic conditions respectively. Hardness was increased from 124 HV5 for a consolidated coarse grained material to 196 HV for a consolidated ultrafine-grained (UFG) material. The mechanical properties obtained in this study were all superior to the ones of the reference AA7020-T651.",

keywords = "Al alloy, High energy ball milling, Mechanical properties, Spark Plasma Sintering, Strengthening mechanism, Ultrafine grained materials",

author = "H. Queudet and S. Lemonnier and E. Barraud and J. Guyon and J. Ghanbaja and N. Allain and E. Gaffet",

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doi = "10.1016/j.msea.2017.01.009",

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journal = "Materials Science and Engineering: A",

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TY - JOUR

T1 - One-step consolidation and precipitation hardening of an ultrafine-grained Al-Zn-Mg alloy powder by Spark Plasma Sintering

AU - Queudet, H.

AU - Lemonnier, S.

AU - Barraud, E.

AU - Guyon, J.

AU - Ghanbaja, J.

AU - Allain, N.

AU - Gaffet, E.

PY - 2017/2/8

Y1 - 2017/2/8

N2 - In the present work, ultrafine-grained Al-Zn-Mg alloy produced by high energy ball milling and Spark Plasma Sintering was synthesized. The Hall-Petch strengthening due to grain refinement (about 150 nm) is preserved and the Orowan's effect attributed to the presence of the hardening phase η’ is obtained in a single-step during the sintering. Maximum compression stresses as high as 736 MPa and 830 MPa were reached in quasistatic and dynamic conditions respectively. Hardness was increased from 124 HV5 for a consolidated coarse grained material to 196 HV for a consolidated ultrafine-grained (UFG) material. The mechanical properties obtained in this study were all superior to the ones of the reference AA7020-T651.

AB - In the present work, ultrafine-grained Al-Zn-Mg alloy produced by high energy ball milling and Spark Plasma Sintering was synthesized. The Hall-Petch strengthening due to grain refinement (about 150 nm) is preserved and the Orowan's effect attributed to the presence of the hardening phase η’ is obtained in a single-step during the sintering. Maximum compression stresses as high as 736 MPa and 830 MPa were reached in quasistatic and dynamic conditions respectively. Hardness was increased from 124 HV5 for a consolidated coarse grained material to 196 HV for a consolidated ultrafine-grained (UFG) material. The mechanical properties obtained in this study were all superior to the ones of the reference AA7020-T651.

KW - Al alloy

KW - High energy ball milling

KW - Mechanical properties

KW - Spark Plasma Sintering

KW - Strengthening mechanism

KW - Ultrafine grained materials

UR - https://www.scopus.com/pages/publications/85008703748

U2 - 10.1016/j.msea.2017.01.009

DO - 10.1016/j.msea.2017.01.009

M3 - Article

AN - SCOPUS:85008703748

SN - 0921-5093

VL - 685

SP - 227

EP - 234

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

ER -

One-step consolidation and precipitation hardening of an ultrafine-grained Al-Zn-Mg alloy powder by Spark Plasma Sintering

Abstract

Keywords

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