The effect of nanoquasicrystals on mechanical properties of as-extruded Mg-Zn-Gd alloy

Hua Huang; Hidemi Kato; Chunlin Chen; Zhongchang Wang; Guangyin Yuan

doi:10.1016/j.matlet.2012.04.018

The effect of nanoquasicrystals on mechanical properties of as-extruded Mg-Zn-Gd alloy

Hua Huang, Hidemi Kato, Chunlin Chen, Zhongchang Wang, Guangyin Yuan

金属材料研究所・物質創製研究部

研究成果: Article › 査読

42 被引用数 (Scopus)

抄録

The Mg-3.5Zn-0.6Gd (at. %) alloy was prepared and homogenized at 673 K for 8 h, and then extruded at 523 K with an extrusion ratio of 9:1. The microstructure and mechanical properties of the extruded alloy have been investigated. Icosahedral quasicrystalline phase (I-phase) existed in extruded Mg-Zn-Gd-based alloys in two morphologies: (1) micron-scale I-phase formed in the solidification, (2) nano-scale ellipsoid-shape I-phase particles precipitated in the extrusion process. A definite orientation relationship and good atomic match between I-phase and α-Mg matrix were directly observed by conventional and high-resolution transmission electron microscopy (HRTEM), which contribute to the high tensile strength of 308 MPa and the large plasticity of 16.4%.

本文言語	English
ページ（範囲）	281-283
ページ数	3
ジャーナル	Materials Letters
巻	79
DOI	https://doi.org/10.1016/j.matlet.2012.04.018
出版ステータス	Published - 2012 7月 15

ASJC Scopus subject areas

材料科学（全般）
凝縮系物理学
材料力学
機械工学

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10.1016/j.matlet.2012.04.018

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title = "The effect of nanoquasicrystals on mechanical properties of as-extruded Mg-Zn-Gd alloy",

abstract = "The Mg-3.5Zn-0.6Gd (at. %) alloy was prepared and homogenized at 673 K for 8 h, and then extruded at 523 K with an extrusion ratio of 9:1. The microstructure and mechanical properties of the extruded alloy have been investigated. Icosahedral quasicrystalline phase (I-phase) existed in extruded Mg-Zn-Gd-based alloys in two morphologies: (1) micron-scale I-phase formed in the solidification, (2) nano-scale ellipsoid-shape I-phase particles precipitated in the extrusion process. A definite orientation relationship and good atomic match between I-phase and α-Mg matrix were directly observed by conventional and high-resolution transmission electron microscopy (HRTEM), which contribute to the high tensile strength of 308 MPa and the large plasticity of 16.4%.",

keywords = "Interface, Mechanical properties, Microstructure, Nano-scale, Quasicrystal",

author = "Hua Huang and Hidemi Kato and Chunlin Chen and Zhongchang Wang and Guangyin Yuan",

note = "Funding Information: This work was supported by the National Nature Science Foundation of China (No. 51174136 ), Science and Technology Commission of Shanghai Municipality (No. 10JC1407400 ), and Specialized Research Fund for the Doctoral Program of Higher Education of China ( 20100073110004 ). The authors are also thankful to the Instrumental Analysis Center of Shanghai Jiao Tong University for tensile tests, XEDS, TEM and HRTEM observation.",

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AU - Wang, Zhongchang

AU - Yuan, Guangyin

N1 - Funding Information: This work was supported by the National Nature Science Foundation of China (No. 51174136 ), Science and Technology Commission of Shanghai Municipality (No. 10JC1407400 ), and Specialized Research Fund for the Doctoral Program of Higher Education of China ( 20100073110004 ). The authors are also thankful to the Instrumental Analysis Center of Shanghai Jiao Tong University for tensile tests, XEDS, TEM and HRTEM observation.

PY - 2012/7/15

Y1 - 2012/7/15

N2 - The Mg-3.5Zn-0.6Gd (at. %) alloy was prepared and homogenized at 673 K for 8 h, and then extruded at 523 K with an extrusion ratio of 9:1. The microstructure and mechanical properties of the extruded alloy have been investigated. Icosahedral quasicrystalline phase (I-phase) existed in extruded Mg-Zn-Gd-based alloys in two morphologies: (1) micron-scale I-phase formed in the solidification, (2) nano-scale ellipsoid-shape I-phase particles precipitated in the extrusion process. A definite orientation relationship and good atomic match between I-phase and α-Mg matrix were directly observed by conventional and high-resolution transmission electron microscopy (HRTEM), which contribute to the high tensile strength of 308 MPa and the large plasticity of 16.4%.

AB - The Mg-3.5Zn-0.6Gd (at. %) alloy was prepared and homogenized at 673 K for 8 h, and then extruded at 523 K with an extrusion ratio of 9:1. The microstructure and mechanical properties of the extruded alloy have been investigated. Icosahedral quasicrystalline phase (I-phase) existed in extruded Mg-Zn-Gd-based alloys in two morphologies: (1) micron-scale I-phase formed in the solidification, (2) nano-scale ellipsoid-shape I-phase particles precipitated in the extrusion process. A definite orientation relationship and good atomic match between I-phase and α-Mg matrix were directly observed by conventional and high-resolution transmission electron microscopy (HRTEM), which contribute to the high tensile strength of 308 MPa and the large plasticity of 16.4%.

KW - Interface

KW - Mechanical properties

KW - Microstructure

KW - Nano-scale

KW - Quasicrystal

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The effect of nanoquasicrystals on mechanical properties of as-extruded Mg-Zn-Gd alloy

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