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Online since: July 2023
Authors: Zahraa Thamer Abdulwahid, Abdullah Dhayea Assi, Salman Hussein Omran
This paper aims to prepare (Al-Cu copper) alloy with specific weight ratios (2,4,5%) so that they do not exceed the saturation limit for aluminum (6% copper) and study the effect of the weight ratio of copper on the mechanical properties of the alloys after aluminum is alloyed with copper in the above ratios, as well as a study of the effect of heat treatment parameters (forced hardening) of aluminum-copper alloys.
The surplus ratio of copper is formed with the aluminum compound Al2Cu, which makes the mixture brittle, and the alloys whose copper percentage does not exceed 6% can be made homogeneous by heating it to 548 ° C and rapidly cooling it (hardening) as shown in Figure (2).
Alloys No.
"Wrought Aluminium Alloys", Elsevier BV, 2017 [4] G.
Tomishige, “Preparation of Ni–Cu/Mg/Al catalysts from hydrotalcite-like compounds for hydrogen production by steam reforming of biomass tar”, International Journal of Hydrogen Energy, Volume 39, Issue 21, 15 July 2014, Pages 10959-10970
The surplus ratio of copper is formed with the aluminum compound Al2Cu, which makes the mixture brittle, and the alloys whose copper percentage does not exceed 6% can be made homogeneous by heating it to 548 ° C and rapidly cooling it (hardening) as shown in Figure (2).
Alloys No.
"Wrought Aluminium Alloys", Elsevier BV, 2017 [4] G.
Tomishige, “Preparation of Ni–Cu/Mg/Al catalysts from hydrotalcite-like compounds for hydrogen production by steam reforming of biomass tar”, International Journal of Hydrogen Energy, Volume 39, Issue 21, 15 July 2014, Pages 10959-10970
Online since: June 2012
Authors: S.A. Nikitin, Nikolay Yu. Pankratov, V.I. Mitsiuk, A.I. Krokhotin, G.A. Govor, V.M. Ryzhkovskii, A.I. Smarzhevskaya
Giant magnetic entropy change around room temperature was obtained in materials with the first-order magnetic phase transition, such as the Gd-based alloys Gd5(SixGe1-x)4 [3], the Fe-based LaFe13−x(Al,Si)x [4] and Fe-Rh [5], the Mn-based Ni-Mn-Ga alloys [6], as well as MnAs [7-9].
The single-phase state of the alloys was established from x-ray diffraction patterns of powder samples at room temperature.
With the aim to investigate MCE in wide field range the magnetization isotherms for the investigated compounds have been obtained at some selected temperatures around of phase transition in magnetic field up to 140 kOe.
Baerner (Ed.), Double Exchange in Heusler Alloys and Related Materials, 2007, pp.29-61
Burriel, Journal of Thermal Analysis and Calorimetry 84 (2006), 213-217
The single-phase state of the alloys was established from x-ray diffraction patterns of powder samples at room temperature.
With the aim to investigate MCE in wide field range the magnetization isotherms for the investigated compounds have been obtained at some selected temperatures around of phase transition in magnetic field up to 140 kOe.
Baerner (Ed.), Double Exchange in Heusler Alloys and Related Materials, 2007, pp.29-61
Burriel, Journal of Thermal Analysis and Calorimetry 84 (2006), 213-217
Online since: January 2009
Authors: Ding Fei Zhang, Xu Yang, Fu Sheng Pan
With the aim of evaluating corrosion inhibition for various inhibitors, a new qualitative
method for corrosion inhibition effect test for magnesium and magnesium alloys was developed.
The results showed that those organic compounds which could form the inhibitor-magnesium precipitation in aqueous solution could be used as corrosion inhibitors for magnesium alloys to inhibit the increase of polarization current density as well as the dissolution and oxidation of magnesium alloys effectively.
For the compare, experiment was also carried out in alkali solution without any organic compounds.
Alloys Comp Vol. 336(2002),p. 88
Structural IdentifIcation of Organic Compounds and Organic Spectroscopy.
The results showed that those organic compounds which could form the inhibitor-magnesium precipitation in aqueous solution could be used as corrosion inhibitors for magnesium alloys to inhibit the increase of polarization current density as well as the dissolution and oxidation of magnesium alloys effectively.
For the compare, experiment was also carried out in alkali solution without any organic compounds.
Alloys Comp Vol. 336(2002),p. 88
Structural IdentifIcation of Organic Compounds and Organic Spectroscopy.
Online since: September 2016
Authors: Xue Shen, Hong Xiao Li, Ming Li Huang
In these alloys, compounds with high melting point could be formed.
You, Journal of Alloys and Compounds, 545(2012)139-143
Schmid-Fetzer, Journal of Alloys and Compounds, 320(2001) 296-301
Tsai, Journal of Alloys and Compounds, 283(1999) 169-172
Hao, Journal of Alloys and Compounds, 489(2010) 620-625.
You, Journal of Alloys and Compounds, 545(2012)139-143
Schmid-Fetzer, Journal of Alloys and Compounds, 320(2001) 296-301
Tsai, Journal of Alloys and Compounds, 283(1999) 169-172
Hao, Journal of Alloys and Compounds, 489(2010) 620-625.
Online since: August 2012
Authors: José Deodoro Trani Capochi, Osvaldo Mitsuyuki Cintho, Joéverton I. Pereira, Alisson K. da Silva, Selauco Vurobi Jr.
Study of Obtainment of NiCrAlC Alloys by High Energy Ball Milling
Joéverton I.
This work aims the synthesis of nickel alloys (Ni-Cr-Al-C) with different amounts of carbon, in order to measure the hardness and analyze the chromium carbides distribution and size, as well as for gamma prime phase.
These alloys have the microstructure predominantly formed by the γ’ phase, in other words, is based on intermetallic compound Ni3Al.
Scanning Electron Microscopy images of NiCrAlC alloys.
Kulik: Journal of Alloys and Compounds Vol. 336 (2002), p. 196
This work aims the synthesis of nickel alloys (Ni-Cr-Al-C) with different amounts of carbon, in order to measure the hardness and analyze the chromium carbides distribution and size, as well as for gamma prime phase.
These alloys have the microstructure predominantly formed by the γ’ phase, in other words, is based on intermetallic compound Ni3Al.
Scanning Electron Microscopy images of NiCrAlC alloys.
Kulik: Journal of Alloys and Compounds Vol. 336 (2002), p. 196
Online since: April 2009
Authors: Shae K. Kim, Jung Ho Seo
New designation 'O' is alkaline earth
metal compounds such as CaO, SrO, CaC2 etc.
The aim of this study is to investigate the effect of CaO in Mg alloys in term of microstructure and tensile properties at high temperature.
But in case of CaO addition the thermally stable compounds is precipitated directly without making solid solution with Mg matrix.
Ha and KIM Young-Jig: Journal of Alloys and Compounds, Vol. 422 (2006), p. 208-213 [2] G.
Shin and S.Cohen: Journal of Alloys and Compounds, (2007), p. 269-276 [3] M.O Pekguleyuz and A.Luo, Patent WO96/25529 (1995) [4] M.O Pekguleyuz and J.Renaud, 2000 magnesim Technology,H.Kaplan, J.Hryn and B.Clow, Eds.
The aim of this study is to investigate the effect of CaO in Mg alloys in term of microstructure and tensile properties at high temperature.
But in case of CaO addition the thermally stable compounds is precipitated directly without making solid solution with Mg matrix.
Ha and KIM Young-Jig: Journal of Alloys and Compounds, Vol. 422 (2006), p. 208-213 [2] G.
Shin and S.Cohen: Journal of Alloys and Compounds, (2007), p. 269-276 [3] M.O Pekguleyuz and A.Luo, Patent WO96/25529 (1995) [4] M.O Pekguleyuz and J.Renaud, 2000 magnesim Technology,H.Kaplan, J.Hryn and B.Clow, Eds.
Online since: April 2015
Authors: Muhammad Helmi Abdul Kudus, Muhammad Razlan Zakaria, Siti Shuhadah Md Saleh, Hazizan Md Akil
This study is aimed to contribute to the CNT synthesis knowledge and polymer composites filler application.
Fig. 1: HRTEM images of CNT-muscovite compound Figs. 2a and b show the SEM images of muscovite powder and CNT-muscovite hybrid compound respectively.
The synthesis of CNT-muscovite compound aims to contribute into the knowledge of CNT synthesis which explained the ability of muscovite to be used as substrate in the CNT synthesis.
Kumagai, Journal of materials science, 1988. 23(2): p. 535-540
Loon, Journal of Alloys and Compounds, 2011. 509(6): p. 2784-2788
Fig. 1: HRTEM images of CNT-muscovite compound Figs. 2a and b show the SEM images of muscovite powder and CNT-muscovite hybrid compound respectively.
The synthesis of CNT-muscovite compound aims to contribute into the knowledge of CNT synthesis which explained the ability of muscovite to be used as substrate in the CNT synthesis.
Kumagai, Journal of materials science, 1988. 23(2): p. 535-540
Loon, Journal of Alloys and Compounds, 2011. 509(6): p. 2784-2788
Online since: September 2020
Authors: Nur Syamira Sa'don, Ahmad Azmin Mohamad, Nurwahida Mohd Zaini, Nordarina Jumali, Muhammad Firdaus Mohd Nazeri
Electrochemical corrosion behavior of Sn–Zn solder alloys in 6 M potassium hydroxide solution was investigated by potentiodynamic polarization technique, aiming to investigate the role of Al additions.
Alloying elements are selectively incorporated into solder alloys to control the intermetallic compound (IMC) thickness and growth, increases toughness, and other mechanical properties.
Meanwhile, Ni micro-alloying altered the layer of Cu6Sn5 intermetallic compounds [5].
The molten alloys were stirred to homogenize the chemical composition.
Suganuma, Ti addition to enhance corrosion resistance of Sn–Zn solder alloy by tailoring microstructure, Journal of Alloys and Compounds, 644 (2015) 113-118
Alloying elements are selectively incorporated into solder alloys to control the intermetallic compound (IMC) thickness and growth, increases toughness, and other mechanical properties.
Meanwhile, Ni micro-alloying altered the layer of Cu6Sn5 intermetallic compounds [5].
The molten alloys were stirred to homogenize the chemical composition.
Suganuma, Ti addition to enhance corrosion resistance of Sn–Zn solder alloy by tailoring microstructure, Journal of Alloys and Compounds, 644 (2015) 113-118
Online since: December 2018
Authors: Roberto Montanari, Loredana Santo, Alessandra Varone, Maria Richetta, Claudio Testani, Giovanni Matteo Tedde, Riccardo Donnini, Andrea Di Schino
The effect of an unconventional thermal treatment method aimed to improve toughness behavior in Al alloys is reported.
This process favours nucleation and refinement of the q’ precipitates in Al-Cu alloys, S’ precipitates in Al-Cu-Mg alloys and T1 precipitates in lithium containing Al-Cu-Mg alloys [3].
Journal of Alloys and Compounds 710 (2017) 199-202
Chen, Effects of minor Cu and Mg additions on microstructure and material properties of 8xxx aluminum conductor alloys, Journal of Materials Research, 32 (2017) 1094-1104
Montanari, Continuous dynamic recrystallization (CDRX) model for aluminum alloys Journal of Materials Science, 53 (2017) 4563-4573
This process favours nucleation and refinement of the q’ precipitates in Al-Cu alloys, S’ precipitates in Al-Cu-Mg alloys and T1 precipitates in lithium containing Al-Cu-Mg alloys [3].
Journal of Alloys and Compounds 710 (2017) 199-202
Chen, Effects of minor Cu and Mg additions on microstructure and material properties of 8xxx aluminum conductor alloys, Journal of Materials Research, 32 (2017) 1094-1104
Montanari, Continuous dynamic recrystallization (CDRX) model for aluminum alloys Journal of Materials Science, 53 (2017) 4563-4573
Online since: February 2012
Authors: H.V. Atkinson, F. Alshmri
Moreover, the addition of iron (Fe) will improve the tensile strength at elevated temperatures and improve wear resistance as well due to the formation of intermetallic compounds which are fine and hard.
The increase of wear resistance is due to the presence of hard Al-Si-Fe intermetallic compounds.
The Fe and Ni additions to Al-Si alloys promote the formation of many intermetallic compounds which will improve the proof stress by up to 45MPa at elevated temperatures.
These intermetallic compounds reduce the coefficient of thermal expansion.
Bekki, "Precipitation Behavior of Zirconium Compounds in Zr Bearing Al-Mg-Si Alloy," Materials Science Forum, vol. 519-521, pp. 501-506, 2006
The increase of wear resistance is due to the presence of hard Al-Si-Fe intermetallic compounds.
The Fe and Ni additions to Al-Si alloys promote the formation of many intermetallic compounds which will improve the proof stress by up to 45MPa at elevated temperatures.
These intermetallic compounds reduce the coefficient of thermal expansion.
Bekki, "Precipitation Behavior of Zirconium Compounds in Zr Bearing Al-Mg-Si Alloy," Materials Science Forum, vol. 519-521, pp. 501-506, 2006