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Precipitation behavior and mechanical properties of a Mg–Zn–Y–Zr alloy processed by thermo-mechanical treatment

Zeng, Xiaoqin ; Zhang, Ya ; Lu, Chen ; Ding, Wenjiang ; Wang, Yingxin ; Zhu, Yanpin

Journal of alloys and compounds, 2005-05, Vol.395 (1), p.213-219 [Periódico revisado por pares]

Lausanne: Elsevier B.V

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  • Título:
    Precipitation behavior and mechanical properties of a Mg–Zn–Y–Zr alloy processed by thermo-mechanical treatment
  • Autor: Zeng, Xiaoqin ; Zhang, Ya ; Lu, Chen ; Ding, Wenjiang ; Wang, Yingxin ; Zhu, Yanpin
  • Assuntos: Aging ; Condensed matter: structure, mechanical and thermal properties ; Exact sciences and technology ; I-phase ; Mechanical and acoustical properties of condensed matter ; Mg alloy ; Physics ; Precipitates
  • É parte de: Journal of alloys and compounds, 2005-05, Vol.395 (1), p.213-219
  • Notas: ObjectType-Article-2
    SourceType-Scholarly Journals-1
    ObjectType-Feature-1
  • Descrição: Mg 92Zn 6Y 1.5Zr 0.5 alloy was extruded at 300, 350, 400 °C and then aged at 180 °C. In the extruded alloy, polygon- and bar-shaped precipitates were observed. The precipitates were identified as I-phase (Mg 3Zn 6Y) and W-phase (Mg 3Zn 3Y 2) respectively by selected area diffraction (SAD) pattern. These precipitates played a role of strengthening the extruded alloy. After aging treatment for 24 h (peak-aged), intermetallic compounds identified as Mg 2Zn 11 and MgZn 2 precipitate dispersively in the extruded alloys. The increase of yield strength at room temperature and ultimate strength at elevated temperatures after the aging process has been ascribed to the strengthening effect of these precipitates. After aging treatment for 48 h (over-aged), metastable phase Mg 2Zn 11 and MgZn 2 transformed to stable phase MgZn phase, losing the coherence with the matrix.
  • Editor: Lausanne: Elsevier B.V
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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