首页|Ameliorating the Strength-Modulus Synergy in GNPs Reinforced Mg-Zn-Zr Composites via Multidirectional Forging and Hot Extrusion Deformation

Ameliorating the Strength-Modulus Synergy in GNPs Reinforced Mg-Zn-Zr Composites via Multidirectional Forging and Hot Extrusion Deformation

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The integration of lightweight and high-modulus magnesium-based materials is becoming increasingly valued as structural materials due to the complexity and intelligence of industrial products like automobiles and electronics.In this study,the graphene nanoplatelets(GNPs)/Mg-Zn-Zr composites with 0.5 wt％GNPs were successfully prepared by the combination of multidirectional forging(MDF)and hot extrusion(Ex).The newly-developed composites after multi-step deformation possessed excellent strength and modulus,with a tensile strength exceeding 375 MPa and an elastic modulus reaching 54 GPa.The results revealed that the stripping and thinning of GNPs bands parallel to the extrusion direction occurred after MDF+Ex,which promoted the dynamic recrystallization and the formation of numerous fine grains.The significant improve-ment in comprehensive mechanical performances of the composites could be primarily ascribed to the refinement of grain size caused by the optimized distribution of GNPs,and efficient load transfer facilitated by the tight interface.

Magnesium matrix compositesGraphene nanoplatelets(GNPs)Multi-step deformationMicrostructureStrength-modulus

Yuhao Chen、Kaibo Nie、Kunkun Deng、Zhilong Liu、Quanxin Shi

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College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China

State Key Laboratory of Compressor Technology(Compressor Technology Laboratory of Anhui Province),Hefei 230031,China

Instrumental Analysis Center,Taiyuan University of Technology,Taiyuan 030024,China

Fundamental Research Program of Shanxi ProvinceFundamental Research Program of Shanxi ProvinceFund Program for the Scientific Activities of Selected Returned Overseas Professionals in Shanxi ProvinceShanxi Provincial Science and Technology Major Special Project plan of"Taking the lead in unveiling the list"Research Project Supported by Shanxi Scholarship Council of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Key Research and Development Program for Young ScientistsSpecial Fund Project for Guiding Local Science and Technology Development by the Central GovernmentOpen Foundation of State Key Laboratory of Compressor Technology(Compressor Technology Laboratory of Anhui Province)

202203021221088202103021223043202300102022010502010122023-0635177112952271109517711282021YFB3703300YDZJSX2021B019SKL-YSJ202103

2024

10.1007/s40195-023-01645-1

金属学报(英文版)
中国金属学会

金属学报(英文版)

CSTPCD
影响因子：0.77
ISSN：1006-7191
年,卷(期)：2024.37(3)
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