Investigation and Nanomechanical Behavior of the Microconstituents of Al-Si-Cu alloy After Solution and Ageing Heat Treatments

Santos, Sofia; Toloczko, Felipe Ribeiro; Merij, Abrão Chiaranda; Saito, N.H.; Silva, Davinson M. da

doi:10.1590/1980-5373-mr-2020-0329

Cited by 10 publications

(4 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lines (111, 200, and 220) represent the Al phase and lines (111, 220, 311, and 400) represent the Si phase. This result is in good agreement with the literature [19] and standard powder diffraction data (PDF), as shown in Table (3). This observation was verified by SEM, as discusses in the next section.…”

Section: X-ray Diffraction ( Xrd)supporting

confidence: 92%

Effect of CuAl2 on the Microstructure and Hardness of Al-Si-xCu Alloys Produced by Powder Metallurgy

Alsowidy,

Humaid,

Gumaan

et al. 2023

jast

View full text Add to dashboard Cite

Aluminum alloys are important in many industrial applications because of their light weight and good mechanical properties. In this study, the effect of copper addition with different percentages ( 0, 0.1, 0.2, 0.3wt. %) on the microstructure and mechanical strength of Al-Si alloy were studied using X-ray fluorescence (XRF), X-ray diffraction (XRD), scanning electron microscope (SEM) and Vickers hardness (Hv) tests. XRD and SEM analyses showed that the Al-Si alloy consisted of α-Al and Si phases. The intermetallic compound (IMC) CuAl2 was detected with the addition of Cu. This IMC causes a change in the lattice constant and inter-atomic spacing (dhkl). The distortion and dense of the microstructure are considered indications of the enhancement in the hardness of alloys. The Vickers hardness (Hv) was measured for the samples before and after sintering. The highest value was 28.755 Hv with 0.2wt. % Cu after sintering, whereas the smallest value was 11.643 Hv without Cu content before sintering. This improvement in hardness is attributed to the temperature that promotes the diffusion of Cu atoms into theAl lattices.

show abstract

Section: X-ray Diffraction ( Xrd)supporting

confidence: 92%

Effect of CuAl2 on the Microstructure and Hardness of Al-Si-xCu Alloys Produced by Powder Metallurgy

Alsowidy,

Humaid,

Gumaan

et al. 2023

jast

View full text Add to dashboard Cite

show abstract

“…6b (Table 3) indicate the presence of Al 2 Cu phase in the aged samples. Dos Santos et al (2021) stated that this phase appears in a white colour after etching the sample with Dix-Keller solution as in this investigation. Similar results were obtained by Chen et al (2015) and Ku et al (2018).…”

Section: E Microstructural Investigationmentioning

confidence: 60%

The influence of the ageing temperature on different properties of the EN AW-7075 aluminium alloy

et al. 2023

View full text Add to dashboard Cite

The influence of the ageing temperature on the hardness, electrical conductivity, thermal diffusivity and thermal conductivity of the EN AW-7075 aluminium alloy was studied in this paper. After solution treating the alloy at 480 °C for 1 h and quenching it in ice water, the investigated alloy was characterized using Differential Thermal Analysis (DTA) in order to determine the optimal temperatures for the isochronal ageing treatments. Afterwards, isochronal ageing was conducted at the temperature range of 110 °C-250 °C for 30 min The hardness, electrical conductivity, thermal diffusivity, thermal conductivity and microstructural features were investigated during the ageing treatments. Hardness had a peak value after ageing at 150 °C, while other properties gradually increased with the ageing temperature. Microstructural investigation of the aged alloy by SEM-EDS revealed the existence of precipitated phases that appear homogenously distributed in the microstructure.

show abstract

“…The estimated hardness values of the matrix and eutectic phases are 160 Vickers instrumented hardness (HVIT) and 336 HVIT, respectively. It was previously reported that the eutectic structure in an Al‐Cu‐Si cast alloy has a significantly higher hardness in comparison to the matrix, [ 35 ] i.e., due to the higher content of the alloying elements and its morphology, respectively, the eutectic phase is supposed to be harder than the Al‐matrix.…”

Section: Resultsmentioning

confidence: 99%

On the Monotonic and Cyclic Behavior of an Al‐Mg‐Zn‐Cu‐Si Compositionally Complex Alloy

Sajadifar,

Baumgartner,

Krochmal

et al. 2023

Adv Eng Mater

View full text Add to dashboard Cite

In the present study, monotonic and cyclic properties of a novel Al‐Mg‐Zn‐Cu‐Si compositionally complex alloy (CCA) were investigated. Microstructural studies revealed that eutectic phase and fishbone‐type structures are embedded by the Al matrix. The mechanical properties of this CCA obtained under compressive loading were found to be promising. However, low ultimate strength and brittle behavior were observed under tension. The fatigue performance of the alloy in the low‐cycle fatigue (LCF) regime was poor. Microstructural features and fracture surface analysis point to the fact that the presence of brittle intermetallic phases and shrinkage defects are responsible for the poor tensile properties and inferior LCF behavior. Homogenization at 460 °C and 465 °C for 3 h, 6 h and 24 h resulted in spheroidization of all coarse precipitates. However, the heat treatment used herein could not enhance the mechanical properties of this CCA.This article is protected by copyright. All rights reserved.

show abstract

Investigation and Nanomechanical Behavior of the Microconstituents of Al-Si-Cu alloy After Solution and Ageing Heat Treatments

Cited by 10 publications

References 42 publications

Effect of CuAl2 on the Microstructure and Hardness of Al-Si-xCu Alloys Produced by Powder Metallurgy

Effect of CuAl2 on the Microstructure and Hardness of Al-Si-xCu Alloys Produced by Powder Metallurgy

The influence of the ageing temperature on different properties of the EN AW-7075 aluminium alloy

On the Monotonic and Cyclic Behavior of an Al‐Mg‐Zn‐Cu‐Si Compositionally Complex Alloy

Contact Info

Product

Resources

About