3 天之前 · The formation and evolution of clusters in Al-Si-Cu-Mg alloys and their impact on subsequent precipitation during aging have been elucidated. More importantly, mechanical properties have been related to microstructures, with focus on clarifying the interaction between dislocations and Mg-Si-Cu clusters/mixed sub-unit precipitates/QP ...

摘要：使用正交试验的方法研究了Si、Cu、Ti三种合金元素对铸造亚共晶铝硅合金组织及性 能的影响。结果表明，铸态合金中主要由α（Al）、共晶Si、θ-Al 2 Cu、Q-Al 5 Cu 2 Mg 8 Si 6和 Π-Al 8 Mg 3 FeSi 6相组成，热处理后θ-Al 2 Cu相更均匀的析出，而Π相转变为β-Al 5 FeSi（Cu ...

2009年12月1日 · Cu 3 Si dissolves appreciable Al. The (Cu) solid solution extends up to 20 at.% Al and 10 at.% Si. The Cu-Si κ phase (cph) is stabilized by Al and is present in the ternary region. It may be noted that in the Cu-Si binary system, κ decomposes eutectoidally at 552 °C.

2 天之前 · The Al-Mg-Si alloy follows a typical precipitation sequence, where GP zones and β'' precipitates evolve into coarser β' and β phases over time. For the Al-Mg-Si-Cu alloy, the addition of Cu modifies the sequence by causing the formation of additional phases such as Q' and L and producing a denser, more uniform distribution of β'' precipitates.

2025年1月5日 · In this study, combined with the solid solution strengthening of Cu in an Al-Si-Cu-Mg alloy, the plasticity and toughness of the alloy are improved by adding Zr through its fine grain strengthening effect and the microstructural evolution of the alloy after adding Zr in the intermediate-temperature environment is studied.

Cu 含量对Al Mg Si Cu 合金微观组织和性能的影响。实验表明:180 °C时效时,4种合金硬度上升至峰值后持续下降,且随着 Cu 含量 增加,合金的时效硬度随之提高,硬化速率加快而软化速率降低;时效时电导率先下降至最. 低值后又持续上升, 且 Cu 含量越高,电导率越低。随着 Cu 含量增加,T6 和T4 态合金的强度随之提高,晶间腐蚀抗力下降,但无Cu 合金不发生晶间腐蚀;T6 态合金析出相类型随Cu 含量增加而变化,Cu 含量较低时(0.6 以下),析出β′′相;而Cu 含量为0.9 时,析出相为β′′ 相和Q′ 相共 …

摘要：采用搅拌铸造工艺制备不同Si含量合金，旨在揭示Si含量对Al-Si-Cu-Ni-Mg合金微观组 织、力学性能和耐磨性的影响。 结果表明，随着Si含量升高，合金中共晶Si长径比和平均长

2021年1月3日 · Minor Zr and V were added individually and jointly to Al–12.5Si–1Cu alloy to develop heat-resistant aluminum alloys. The as-cast microstructure, room temperature, and high temperature (350 °C) tensile properties and the strengthening mechanism of the modified alloys were investigated.

2020年6月13日 · 同时通过对比实验研究Cu元素的加入对Al－Si合金的组织及力学性能的影响。 分别进行了拉伸试验，观察金相组织，断口形貌以及硬度测试等综合研究材料性能的实验。

分别添加银等控制时效过程元素及Ti、Zr、V、B等晶粒细化元素的Al-Cu-Mn，Al-Cu-Mg系列的合金，室温力学性能最好，室温拉伸强度可达500MPa，与一般高强度 变形铝合金 相当。