Effect of Si and Cu additions on the phase composition, microstructure and properties of Al-Sn alloys
Effect of Si and Cu additions on the phase composition, microstructure and properties of Al-Sn alloys
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DOI：
10.1016/j.jallcom.2016.11.193
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发表时间：
2017-02-25
影响因子：
6.2
通讯作者：
Yakovleva, A. O.
中科院分区：
文献类型：
--
作者：
Belov, N. A.;Akopyan, T. K.;Yakovleva, A. O.
采用热力学计算和实验相结合的方法研究了Al-Cu-Si-Sn合金的相变。计算的等温截面和垂直截面证实了液相不溶性和单组分反应场的存在。结果表明，退火在500摄氏度，然后淬火，显着修改的Sn相的形态，与颗粒获得一个球形形状，由于局部熔化。研究了Si和Cu对Al-20wt%Sn和Al-6wt%Sn基模合金的硬度、密度、电导率和工艺性的影响。结果表明，Al 6Sn 4Cu 5Si合金的摩擦学性能不亚于减摩青铜Cu 4Sn 4 Zn 17 Pb，而在密度、硬度和导热系数方面则明显优于减摩青铜。(C)2016爱思唯尔B. V.保留所有权利。
The phase transformations in Al-Cu-Si-Sn alloys were studied using both thermodynamic calculations and experimental methods. The calculated isothermal and vertical sections confirm the presence of fields of liquid phase immiscibility and monotectic reactions. It is shown that annealing at 500 degrees C, followed by quenching, significantly modifies the morphology of the Sn phase, with the particles acquiring a globular shape due to local melting. The influence of Si and Cu on hardness, density, specific electrical conductivity and manufacturability of the base model alloys, Al-20 wt% Sn and Al-6 wt% Sn, is investigated. It is shown that the Al6Sn4Cu5Si alloy is not inferior to antifriction bronze Cu4Sn 4Zn17Pb in terms of tribological characteristics and it significantly exceeds it with regard to density, hardness and thermal conductivity. (C) 2016 Elsevier B.V. All rights reserved.