Possibility of Elevation of Mechanical Properties of Sand-Cast Copper Silumins
- 作者: Medvedeva S.V.1, Zolotarevskii V.S.1, Yakovtseva O.A.1
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隶属关系:
- National Research Technological University “MISiS”
- 期: 卷 60, 编号 9-10 (2019)
- 页面: 560-565
- 栏目: Article
- URL: https://journals.rcsi.science/0026-0673/article/view/236443
- DOI: https://doi.org/10.1007/s11041-019-00322-4
- ID: 236443
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详细
The effect of heat treatment modes of copper silumins with 4% Cu and different concentrations of silicon and magnesium crystallized in sand molds on their microstructure and mechanical properties is studied. It is shown that the level of the strength and ductility parameters of the copper silumins after the treatment depends primarily on the degree of dissolution of phase CuAl2 and that the concentration of magnesium in copper silumins with 4% Si + 4% Cu should not exceed 0.1 – 0.12%, which is sufficient for raising the strength characteristics without noticeable degradation of the ductility. The optimum mode for aging of alloy Al – 4% Si – 3.9% Cu – 0.13% Mg (160°C, 8 h), which provides σ0.2 = 330 MPa, σr = 400 MPa and δ = 2%, is determined by computation.
作者简介
S. Medvedeva
National Research Technological University “MISiS”
编辑信件的主要联系方式.
Email: medvedeva.sv@misis.ru
俄罗斯联邦, Moscow
V. Zolotarevskii
National Research Technological University “MISiS”
Email: medvedeva.sv@misis.ru
俄罗斯联邦, Moscow
O. Yakovtseva
National Research Technological University “MISiS”
Email: medvedeva.sv@misis.ru
俄罗斯联邦, Moscow
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