Improving creep property of Mg–Gd–Zn alloy via trace Ca addition

C. Xu; T. Nakata; K. Oh-ishi; T. Homma; T. Ozaki; S. Kamado

doi:10.1016/j.scriptamat.2017.06.012

Improving creep property of Mg–Gd–Zn alloy via trace Ca addition

C. Xu^*
, T. Nakata
, K. Oh-ishi
, T. Homma
, T. Ozaki
, S. Kamado

^*Corresponding author for this work

Nagaoka University of Technology
IHI Corporation

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

52 Scopus citations

Abstract

Only trace Ca addition to the Mg–2Gd–0.5Zn–0.2Zr (at.%) alloy leads to the precipitation of Guinier-Preston (GP) zones and remarkably improves the creep resistance at elevated temperatures. The Mg–2Gd–0.5Zn–0.4Ca–0.2Zr alloy exhibits a minimum creep rate of 5.75 × 10^− 8 s^− 1 tested at 250 °C and 110 MPa, its superior creep resistance is attributed to the precipitation of dense GP zones on the basal plane, increment in number density of refined β phases on the prismatic plane of the α-Mg matrix, narrow precipitate free zones (PFZs) and strengthened long period stacking ordered (LPSO) phases by trace concentration of Ca.

Original language	English
Pages (from-to)	34-38
Number of pages	5
Journal	Scripta Materialia
Volume	139
DOIs	https://doi.org/10.1016/j.scriptamat.2017.06.012
State	Published - Oct 2017
Externally published	Yes

Keywords

Creep
Magnesium alloys
Precipitation
Transmission electron microscopy

Access to Document

10.1016/j.scriptamat.2017.06.012

Cite this

@article{cf641e196bb54eaf8aa89e001322b620,

title = "Improving creep property of Mg–Gd–Zn alloy via trace Ca addition",

abstract = "Only trace Ca addition to the Mg–2Gd–0.5Zn–0.2Zr (at.\%) alloy leads to the precipitation of Guinier-Preston (GP) zones and remarkably improves the creep resistance at elevated temperatures. The Mg–2Gd–0.5Zn–0.4Ca–0.2Zr alloy exhibits a minimum creep rate of 5.75 × 10− 8 s− 1 tested at 250 °C and 110 MPa, its superior creep resistance is attributed to the precipitation of dense GP zones on the basal plane, increment in number density of refined β phases on the prismatic plane of the α-Mg matrix, narrow precipitate free zones (PFZs) and strengthened long period stacking ordered (LPSO) phases by trace concentration of Ca.",

keywords = "Creep, Magnesium alloys, Precipitation, Transmission electron microscopy",

author = "C. Xu and T. Nakata and K. Oh-ishi and T. Homma and T. Ozaki and S. Kamado",

note = "Publisher Copyright: {\textcopyright} 2017 Acta Materialia Inc.",

year = "2017",

month = oct,

doi = "10.1016/j.scriptamat.2017.06.012",

language = "英语",

volume = "139",

pages = "34--38",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Acta Materialia Inc",

}

TY - JOUR

T1 - Improving creep property of Mg–Gd–Zn alloy via trace Ca addition

AU - Xu, C.

AU - Nakata, T.

AU - Oh-ishi, K.

AU - Homma, T.

AU - Ozaki, T.

AU - Kamado, S.

PY - 2017/10

Y1 - 2017/10

N2 - Only trace Ca addition to the Mg–2Gd–0.5Zn–0.2Zr (at.%) alloy leads to the precipitation of Guinier-Preston (GP) zones and remarkably improves the creep resistance at elevated temperatures. The Mg–2Gd–0.5Zn–0.4Ca–0.2Zr alloy exhibits a minimum creep rate of 5.75 × 10− 8 s− 1 tested at 250 °C and 110 MPa, its superior creep resistance is attributed to the precipitation of dense GP zones on the basal plane, increment in number density of refined β phases on the prismatic plane of the α-Mg matrix, narrow precipitate free zones (PFZs) and strengthened long period stacking ordered (LPSO) phases by trace concentration of Ca.

AB - Only trace Ca addition to the Mg–2Gd–0.5Zn–0.2Zr (at.%) alloy leads to the precipitation of Guinier-Preston (GP) zones and remarkably improves the creep resistance at elevated temperatures. The Mg–2Gd–0.5Zn–0.4Ca–0.2Zr alloy exhibits a minimum creep rate of 5.75 × 10− 8 s− 1 tested at 250 °C and 110 MPa, its superior creep resistance is attributed to the precipitation of dense GP zones on the basal plane, increment in number density of refined β phases on the prismatic plane of the α-Mg matrix, narrow precipitate free zones (PFZs) and strengthened long period stacking ordered (LPSO) phases by trace concentration of Ca.

KW - Creep

KW - Magnesium alloys

KW - Precipitation

KW - Transmission electron microscopy

UR - https://www.scopus.com/pages/publications/85020831769

U2 - 10.1016/j.scriptamat.2017.06.012

DO - 10.1016/j.scriptamat.2017.06.012

M3 - 文章

AN - SCOPUS:85020831769

SN - 1359-6462

VL - 139

SP - 34

EP - 38

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Improving creep property of Mg–Gd–Zn alloy via trace Ca addition

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this