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Online since: March 2008
Authors: Jun Li, Wen Ge Li, Guang Jun Zhang
Introduction
NiCrBSi alloys have been paid special attention in laser cladding since they provide the
excellent wear and corrosion resistance properties.
The aim of the present investigation is to prepare in situ synthesized TiB2+WC reinforced NiCrBSi alloys on stainless steel substrate by laser cladding.
Gibbs free energies of formation of the above compounds for various temperatures are presented in Fig. 3.
During the same temperature, the spontaneous trend of these compounds is followed: Ni4B3>Ni3Ti> FeB or Fe2Ni, That is to say, these compounds can form between the coating and substrate during the laser cladding, which shows the coating and the substrate have a metallurgical bond.
Zhang: Journal of Alloys and Compounds Vol. 391 (2005), p. 146-150 [5] W.P.
The aim of the present investigation is to prepare in situ synthesized TiB2+WC reinforced NiCrBSi alloys on stainless steel substrate by laser cladding.
Gibbs free energies of formation of the above compounds for various temperatures are presented in Fig. 3.
During the same temperature, the spontaneous trend of these compounds is followed: Ni4B3>Ni3Ti> FeB or Fe2Ni, That is to say, these compounds can form between the coating and substrate during the laser cladding, which shows the coating and the substrate have a metallurgical bond.
Zhang: Journal of Alloys and Compounds Vol. 391 (2005), p. 146-150 [5] W.P.
Online since: December 2012
Authors: Kentaro Uesugi, Hideyuki Yasuda, Kazuhiro Nogita, Stuart D. McDonald
In the composition range of 0.7 to 7.6 wt% Cu the liquidus temperature increases from 227 ºC to 415 ºC, respectively, and solidification of the bulk alloy commences with the nucleation and growth of primary Cu6Sn5 intermetallic compounds (IMCs).
In high-temperature alloys, this problem is compounded, as operating temperatures above 186°C may result in more frequent polymorphic phase-transformations unless these are prevented by the influence of additional elements known to stabilise the hexagonal phase, such as Ni[13-15], Zn[16, 17], Sb[18], Au[17] and to a lesser degree In[17].
The aim of this paper is to demonstrate how synchrotron techniques can be used to confirm both the effects of introduced nuclei on the nucleation and growth of primary Cu6Sn5 grains in commercially available Sn-7wt%Cu-0.05wt%Ni (SN100C7) and Sn-7wt%Cu-0.05wt%Ni with trace Al (SN100C7A) alloys.
Alloys were supplied by Nihon Superior Co.
Okamoto: ‘Phase Diagrams of Dilute Binary Alloys’ (ASM International, 2002. 2002) [5] I.
In high-temperature alloys, this problem is compounded, as operating temperatures above 186°C may result in more frequent polymorphic phase-transformations unless these are prevented by the influence of additional elements known to stabilise the hexagonal phase, such as Ni[13-15], Zn[16, 17], Sb[18], Au[17] and to a lesser degree In[17].
The aim of this paper is to demonstrate how synchrotron techniques can be used to confirm both the effects of introduced nuclei on the nucleation and growth of primary Cu6Sn5 grains in commercially available Sn-7wt%Cu-0.05wt%Ni (SN100C7) and Sn-7wt%Cu-0.05wt%Ni with trace Al (SN100C7A) alloys.
Alloys were supplied by Nihon Superior Co.
Okamoto: ‘Phase Diagrams of Dilute Binary Alloys’ (ASM International, 2002. 2002) [5] I.
Online since: January 2014
Authors: Ashraf Bin Otman, Maizlinda Izwana Idris, Darwin Sebayang, Pudji Untoro, Dafit Feriyanto
MICROSTRUCTURE STUDY ON Fe/Cr BASED ALLOYS ADDED WITH YTTRIUM OXIDE (Y2O3) PREPARED VIA ULTRASONIC TECHNIQUE FOR
SOLID OXIDE FUEL CELL (SOFC) APPLICATION.
Fe-Cr alloys are able to improve the properties of the initial material.
Reference [1] Yaodong Liu and Wei Liu, Mechanical alloying and spark plasma sintering of the intermetallic compound Ti50Al50, Journal of Alloys and Compounds, vol. 440 (2007), pp. 154–157
Khaerudini, Effect of Depth Implantation of Lanthanum on The Oxidation of Fe80Cr20 based Alloys, World Congress on Engineering (WCE) 2010, London, UK
Determination of nanocrystalline Fe80Cr20 based alloys using Williamson-hall Methode.
Fe-Cr alloys are able to improve the properties of the initial material.
Reference [1] Yaodong Liu and Wei Liu, Mechanical alloying and spark plasma sintering of the intermetallic compound Ti50Al50, Journal of Alloys and Compounds, vol. 440 (2007), pp. 154–157
Khaerudini, Effect of Depth Implantation of Lanthanum on The Oxidation of Fe80Cr20 based Alloys, World Congress on Engineering (WCE) 2010, London, UK
Determination of nanocrystalline Fe80Cr20 based alloys using Williamson-hall Methode.
Online since: November 2016
Authors: Eric Andrieu, Grégory Odemer, Loïc Oger, Lionel Peguet, Christine Blanc
However, precipitation hardened Al-Zn-Mg alloys are susceptible to stress corrosion cracking (SCC).
The aim was to distinguish the effects due to hydrogen and the ones due to corrosion phenomena.
El-Amoush, An investigation of hydrogen-induced hardening in 7075-T6 aluminum alloy, Journal of Alloys and Compounds. 465 (2008) 497–501
Cassell, Durability of lean 7xxx series aluminium alloys, thesis. (2013)1–345
Buchheit, Electrochemical characteristics of intermetallic phases in aluminum alloys, Journal of Electrochemical Society. 152 (2005) B140
The aim was to distinguish the effects due to hydrogen and the ones due to corrosion phenomena.
El-Amoush, An investigation of hydrogen-induced hardening in 7075-T6 aluminum alloy, Journal of Alloys and Compounds. 465 (2008) 497–501
Cassell, Durability of lean 7xxx series aluminium alloys, thesis. (2013)1–345
Buchheit, Electrochemical characteristics of intermetallic phases in aluminum alloys, Journal of Electrochemical Society. 152 (2005) B140
Online since: March 2012
Authors: Rui Song Yang, Ming Tian Li, Chun Hai Liu, Xue Jun Cui, Yong Zhong Jin
Intermetallic compounds comprise the class of metallic materials which today enjoy intense study by materials scientists and engineers.
Cu–Ni alloys are widely used in various fields such as ship, heat exchangers and sea water condenser tubes [4].
Ghosh et al. [6] explored the corrosion behavior of deposited nanocrystalline Ni–Cu alloys in 3.0 wt.% NaCl solution, concluded that the deposited nanocrystalline alloys were dense in nature.
Results and discussion In the present work the aim of the milling is to provide enough energy to the sample.
Alloys Compd.
Cu–Ni alloys are widely used in various fields such as ship, heat exchangers and sea water condenser tubes [4].
Ghosh et al. [6] explored the corrosion behavior of deposited nanocrystalline Ni–Cu alloys in 3.0 wt.% NaCl solution, concluded that the deposited nanocrystalline alloys were dense in nature.
Results and discussion In the present work the aim of the milling is to provide enough energy to the sample.
Alloys Compd.
Online since: August 2016
Authors: Igor Kostolný, Pavol Šebo, Roman Koleňák
Addition of 1% Cu to ZnAl4 solder in case of soldering on Cu substrate resulted in reduction of activation energy for growth of intermetallic compounds.
Kang, Journal of Alloys and Compounds 467,2009, pp. 246–250 [8] A.
Masjuki: Investigations on Zn-Al-Ge Alloys as High Temperature Die Attach Material, University of Malaysia, Kuala Lumpur, Malaysia [9] T.
Ishida, Journal of Electronic Materials, Volume 28, Issue 11, 1999, pp. 1172-1175 [10] Y.
Ishida, Journal of Electronic Materials, Volume 37, Issue 3, 2008, pp. 314-323 [11] A.
Kang, Journal of Alloys and Compounds 467,2009, pp. 246–250 [8] A.
Masjuki: Investigations on Zn-Al-Ge Alloys as High Temperature Die Attach Material, University of Malaysia, Kuala Lumpur, Malaysia [9] T.
Ishida, Journal of Electronic Materials, Volume 28, Issue 11, 1999, pp. 1172-1175 [10] Y.
Ishida, Journal of Electronic Materials, Volume 37, Issue 3, 2008, pp. 314-323 [11] A.
Online since: January 2012
Authors: Ju Young Cho, Bok Hyun Kang, Ki Young Kim
High purity silicon can also be obtained from Al-Si alloys using solidification theory.
In addition, liquidus temperatures of those alloys decrease rapidly since they have the eutectic in binary system respectively.
Al-Si alloy is one of the promising candidates because it has no intermetallic compounds which prevent separation of Si from the matrix and the remainder of Al-Si alloy after separation can be used for automobile industry.
It is also very important to separate only Si particles from those alloys.
Morita : Journal of Crystal Growth 311. (2009), p.776-779
In addition, liquidus temperatures of those alloys decrease rapidly since they have the eutectic in binary system respectively.
Al-Si alloy is one of the promising candidates because it has no intermetallic compounds which prevent separation of Si from the matrix and the remainder of Al-Si alloy after separation can be used for automobile industry.
It is also very important to separate only Si particles from those alloys.
Morita : Journal of Crystal Growth 311. (2009), p.776-779
Online since: February 2014
Authors: Quan Tong Jiang, Xing Gang Li, Yong Jun Li, Ming Long Ma, Guo Liang Shi, Jia Wei Yuan
However, the application of alloys is mainly limited by poor corrosion properties [2].
We aim to determine the effect of CO2 and relative humidity to the corrosion behaviors for Mg-RE alloys.
Experimental procedure Peak-aged Mg-7Gd-5Y-1Nd-0.5Zr alloys were used for the field-exposure study.
Magnesium alloys containing rare earth metals [M].
Journal of Alloys and Compounds 2013, 574: 174-180 [10] Lindstrom R, Svensson J E, Johansson L G.
We aim to determine the effect of CO2 and relative humidity to the corrosion behaviors for Mg-RE alloys.
Experimental procedure Peak-aged Mg-7Gd-5Y-1Nd-0.5Zr alloys were used for the field-exposure study.
Magnesium alloys containing rare earth metals [M].
Journal of Alloys and Compounds 2013, 574: 174-180 [10] Lindstrom R, Svensson J E, Johansson L G.
Online since: October 2018
Authors: Yu Fan, An Min Liu, Pei Zhi Li, Chong Hao Zhang, Kun Chen, Ke Pu
The formation of iron and nitrogen compounds is induced by the combination of titanium nitride.
(3) Under 500 W laser power, the experiment of laser nitriding on pure iron surface did not produce iron nitrogen compounds.
Amiri, et al., Plasma nitriding of Al alloys by DC glow discharge, Surf.
Guo, Study on surface strengthening technology of titanium and its alloys, Advanced lubrication and protective materials research and Development Center. 2008
Luo, Study on laser gas nitriding of titanium alloys, Laser Journal. 3 (1997) 32-36
(3) Under 500 W laser power, the experiment of laser nitriding on pure iron surface did not produce iron nitrogen compounds.
Amiri, et al., Plasma nitriding of Al alloys by DC glow discharge, Surf.
Guo, Study on surface strengthening technology of titanium and its alloys, Advanced lubrication and protective materials research and Development Center. 2008
Luo, Study on laser gas nitriding of titanium alloys, Laser Journal. 3 (1997) 32-36
Online since: July 2015
Authors: Aleksey Sergeevich Volegov, Anton S. Bolyachkin, Nikolay Vladimirovich Kudrevatykh
Abstract
A new method of intergrain exchange interaction energy determination in nanostructured magnetically hard alloys with spontaneous spin-reorientation transition has been developed and verified.
Despite of negative role of the spontaneous spin-reorientation transition in Nd-Fe-B nanostructured alloys in hysteresis loop squareness and maximal energy product at low temperatures, this transition can be exploit for the quantitative estimation of the intergrain exchange energy (or its parameter) between neighbour grains in Nd-Fe-B type nanostructured alloys.
It could be applied to high-coercive nanocrystalline alloys having spontaneous spin-reorientation transitions of «easy axis – easy cone» type.
Ando, Evaluation of interlayer exchange coupling in α-Fe(100)/Nd2Fe14B(001) films, Journal of the Korean Physical Society 63 (2013) 489-492
Sabiryanova, Magnetic hysteresis in micro and nanostructural alloys of RE-3d-metal-boron system on the base of Nd2Fe14B phase in wide temperature range, Perspective Materials, Special issue (2011) 185-191 (in Russian)
Despite of negative role of the spontaneous spin-reorientation transition in Nd-Fe-B nanostructured alloys in hysteresis loop squareness and maximal energy product at low temperatures, this transition can be exploit for the quantitative estimation of the intergrain exchange energy (or its parameter) between neighbour grains in Nd-Fe-B type nanostructured alloys.
It could be applied to high-coercive nanocrystalline alloys having spontaneous spin-reorientation transitions of «easy axis – easy cone» type.
Ando, Evaluation of interlayer exchange coupling in α-Fe(100)/Nd2Fe14B(001) films, Journal of the Korean Physical Society 63 (2013) 489-492
Sabiryanova, Magnetic hysteresis in micro and nanostructural alloys of RE-3d-metal-boron system on the base of Nd2Fe14B phase in wide temperature range, Perspective Materials, Special issue (2011) 185-191 (in Russian)