Effect of microalloying with Ca on the microstructure and mechanical properties of Mg-6 mass%Zn alloys

Y. Z. Du; X. G. Qiao; M. Y. Zheng; D. B. Wang; K. Wu; I. S. Golovin

doi:10.1016/j.matdes.2016.03.025

Effect of microalloying with Ca on the microstructure and mechanical properties of Mg-6 mass%Zn alloys

Y. Z. Du
, X. G. Qiao
, M. Y. Zheng^*
, D. B. Wang
, K. Wu
, I. S. Golovin

^*Corresponding author for this work

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

130 Scopus citations

Abstract

The Mg-6 mass%Zn alloys microalloyed with different amounts of Ca were cast and extruded. The second phase in the as-cast Mg-6Zn alloy is Mg₄Zn₇, which is replaced by Ca₂Mg₆Zn₃ with an increase of Ca addition. Microalloying by Ca affects the grain size, dynamic recrystallization, and dynamic precipitation of Mg-6Zn alloys during extrusion. The Ca addition inhibits dynamic recrystallization and grain growth due to the pinning effect of fine precipitates, giving rise to fine dynamic recrystallized grains. A large amount of precipitates is observed in the Ca containing alloys after extrusion. Ca effectively improves strength of the as-extruded Mg-6Zn alloy, which is mainly attributed to refined dynamic recrystallized grains, dense precipitates, and deformed regions with high-density dislocations and strong basal texture.

Original language	English
Pages (from-to)	285-293
Number of pages	9
Journal	Materials and Design
Volume	98
DOIs	https://doi.org/10.1016/j.matdes.2016.03.025
State	Published - 15 May 2016
Externally published	Yes

Keywords

Mechanical properties
Mg-Zn-Ca alloy
Microalloying
Microstructure
Precipitates

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10.1016/j.matdes.2016.03.025

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@article{b44c9fd6e2de4d33a7070a164f038fb1,

title = "Effect of microalloying with Ca on the microstructure and mechanical properties of Mg-6 mass\%Zn alloys",

abstract = "The Mg-6 mass\%Zn alloys microalloyed with different amounts of Ca were cast and extruded. The second phase in the as-cast Mg-6Zn alloy is Mg4Zn7, which is replaced by Ca2Mg6Zn3 with an increase of Ca addition. Microalloying by Ca affects the grain size, dynamic recrystallization, and dynamic precipitation of Mg-6Zn alloys during extrusion. The Ca addition inhibits dynamic recrystallization and grain growth due to the pinning effect of fine precipitates, giving rise to fine dynamic recrystallized grains. A large amount of precipitates is observed in the Ca containing alloys after extrusion. Ca effectively improves strength of the as-extruded Mg-6Zn alloy, which is mainly attributed to refined dynamic recrystallized grains, dense precipitates, and deformed regions with high-density dislocations and strong basal texture.",

keywords = "Mechanical properties, Mg-Zn-Ca alloy, Microalloying, Microstructure, Precipitates",

author = "Du, \{Y. Z.\} and Qiao, \{X. G.\} and Zheng, \{M. Y.\} and Wang, \{D. B.\} and K. Wu and Golovin, \{I. S.\}",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd.",

year = "2016",

month = may,

day = "15",

doi = "10.1016/j.matdes.2016.03.025",

language = "英语",

volume = "98",

pages = "285--293",

journal = "Materials and Design",

issn = "0264-1275",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Effect of microalloying with Ca on the microstructure and mechanical properties of Mg-6 mass%Zn alloys

AU - Du, Y. Z.

AU - Qiao, X. G.

AU - Zheng, M. Y.

AU - Wang, D. B.

AU - Wu, K.

AU - Golovin, I. S.

PY - 2016/5/15

Y1 - 2016/5/15

N2 - The Mg-6 mass%Zn alloys microalloyed with different amounts of Ca were cast and extruded. The second phase in the as-cast Mg-6Zn alloy is Mg4Zn7, which is replaced by Ca2Mg6Zn3 with an increase of Ca addition. Microalloying by Ca affects the grain size, dynamic recrystallization, and dynamic precipitation of Mg-6Zn alloys during extrusion. The Ca addition inhibits dynamic recrystallization and grain growth due to the pinning effect of fine precipitates, giving rise to fine dynamic recrystallized grains. A large amount of precipitates is observed in the Ca containing alloys after extrusion. Ca effectively improves strength of the as-extruded Mg-6Zn alloy, which is mainly attributed to refined dynamic recrystallized grains, dense precipitates, and deformed regions with high-density dislocations and strong basal texture.

AB - The Mg-6 mass%Zn alloys microalloyed with different amounts of Ca were cast and extruded. The second phase in the as-cast Mg-6Zn alloy is Mg4Zn7, which is replaced by Ca2Mg6Zn3 with an increase of Ca addition. Microalloying by Ca affects the grain size, dynamic recrystallization, and dynamic precipitation of Mg-6Zn alloys during extrusion. The Ca addition inhibits dynamic recrystallization and grain growth due to the pinning effect of fine precipitates, giving rise to fine dynamic recrystallized grains. A large amount of precipitates is observed in the Ca containing alloys after extrusion. Ca effectively improves strength of the as-extruded Mg-6Zn alloy, which is mainly attributed to refined dynamic recrystallized grains, dense precipitates, and deformed regions with high-density dislocations and strong basal texture.

KW - Mechanical properties

KW - Mg-Zn-Ca alloy

KW - Microalloying

KW - Microstructure

KW - Precipitates

UR - https://www.scopus.com/pages/publications/84963623443

U2 - 10.1016/j.matdes.2016.03.025

DO - 10.1016/j.matdes.2016.03.025

M3 - 文章

AN - SCOPUS:84963623443

SN - 0264-1275

VL - 98

SP - 285

EP - 293

JO - Materials and Design

JF - Materials and Design

ER -

Effect of microalloying with Ca on the microstructure and mechanical properties of Mg-6 mass%Zn alloys

Abstract

Keywords

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