Precipitation modification in cast Mg–1Nd–1Ce–Zr alloy by Zn addition

Yiyuan Zhou; Penghuai Fu; Liming Peng; Dan Wang; Yingxin Wang; Bin Hu; Ming Liu; Anil K. Sachdev; Wenjiang Ding

Journal of Magnesium and Alloys (Mar 2019)

Precipitation modification in cast Mg–1Nd–1Ce–Zr alloy by Zn addition

Yiyuan Zhou,
Penghuai Fu,
Liming Peng,
Dan Wang,
Yingxin Wang,
Bin Hu,
Ming Liu,
Anil K. Sachdev,
Wenjiang Ding

Affiliations

Yiyuan Zhou: National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, Shanghai 200240, PR China
Penghuai Fu: National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, Shanghai 200240, PR China; Shanghai Light Alloy Net Forming National Engineering Research Center Co., Ltd, Shanghai 201615, PR China; Corresponding author at: National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, Shanghai 200240, PR China.
Liming Peng: National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, Shanghai 200240, PR China
Dan Wang: National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, Shanghai 200240, PR China
Yingxin Wang: National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, Shanghai 200240, PR China
Bin Hu: General Motors China Science Laboratory, Shanghai 201206, PR China
Ming Liu: General Motors China Science Laboratory, Shanghai 201206, PR China
Anil K. Sachdev: General Motors Research & Development Center, Warren, MI 48090, USA
Wenjiang Ding: National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, Shanghai 200240, PR China

Journal volume & issue: Vol. 7, no. 1
pp. 113 – 123

Abstract

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The effects of different Zn addition (0, 0.2, 0.5, 1.0 wt%) on the microstructure and mechanical properties of cast Mg–1Nd–1Ce–Zr alloy in as-cast, solution-treated and 200 °C peak-aged conditions were studied. Precipitates in cast Mg–1Nd–1Ce–Zr alloy are significantly modified by the Zn addition. In the Zn-free alloy, the disk-shaped prismatic precipitates and the point-like precipitates are the main strengthening phases. When 0.2 Zn is added, the disk-shaped precipitates are refined and very fine basal precipitates form additionally. When 0.5 Zn is added, the basal precipitates become the main strengthening phase. Further increasing the Zn addition to 1.0%, only spare basal precipitates and point-like precipitates exist. The 0.5 Zn addition alloy has the highest strength at room temperature, whose yield strength, ultimate tensile strength and elongation in T6 condition are 136 MPa, 237 MPa and 9%, respectively. Keywords: Mg alloy, Precipitate, Rare earth, Zn addition, Mechanical properties, Mg wheel

Published in Journal of Magnesium and Alloys

ISSN: 2213-9567 (Online)
Publisher: KeAi Communications Co., Ltd.
Country of publisher: China
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.keaipublishing.com/en/journals/journal-of-magnesium-and-alloys/

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