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Online since: September 2011
Authors: Bartłomiej Płonka, Juliusz Senderski
Obtained results Rm above 700MPa (for AlZnMg alloy) and above 500MPa (for AlCuMg alloy) shows significant possibilities of manufacturing from Al alloys powders products with ultrafine grain and nanometric structure which properties exceeding alloys manufactured with standard methods.
Within the scope of broadly understood powder metallurgy, powders of metals, intermetallic compounds and chemical compounds of metals and/or non-metals are fabricated to be subjected later to pressing, or pressing and sintering, to obtain final materials with a porous structure.
Misiołek, Consolidation of metal powders during the extrusion process, Journal of Mat.
Yilmaz, Investigation extrusion ratio effect on mechanical behaviour of extruded alloy AA-6063, Journal of Materials Processing Technology, 135 (2003) 101-108 [5] ASM Specialty Handbook.
Aluminum and Aluminum Alloys.
Online since: April 2009
Authors: Gemma Herranz, Gloria P. Rodriguez, Jorge Simao
XRD analysis clearly showed the surface alloying effect produced, as well as the nature of the compounds formed.
Peaks corresponding to the substoichiometric compounds Co2W4C, WC1-x, W2C and W3C were identified, due to the transfer of material from the tool electrode onto the workpiece surface.  carbide (Fe2C) was also detected, as shown in Figure 6.
Nevertheless, some solid state transformations may not occur due to the rapid cooling process occurring in EDM, originating phases outside the equilibrium and compounds which are only stable at high temperatures.
Sidhom, Journal of Materials Engineering and Performance, 11, (2002), 631-639
Flukiger, Journal of Materials Processing Technologies, 149, (2004), 289-295.
Online since: August 2014
Authors: Mohd Nazree B. Derman, Norainiza Saud, Norhayanti Mohd Nasir, Arif Anuar Mohd Salleh, Mohd Izrul Izwan Ramli, Rita Mohd Said
Thus, Sn–Ag–Cu alloys have been proposed by the Japanese (Sn–3.0 wt.
However, because of the rigidity of high-Ag-content in Sn–Ag–Cu alloys compared to Sn–Pb solder alloys, more failures may occur in drop- and high-impact situations in portable electronic devices that contain these solder joints.
Apart from that, the high Ag content in Sn–Ag–Cu alloys results in a relatively high cost for these materials.
Suganuma: Journal of Alloys and Compounds, 352, p. 226–236. (2003) [7] K.
Said: Journal of Alloys and Compounds, 582, p. 437–446. (2014) [10] S.M.L.
Online since: June 2012
Authors: E.V. Belozerov, N.V. Mushnikov, V.V. Serikov, A.V. Vershinin, N.M. Kleinerman
Further studies were aimed at searching a way of gaining the required properties on alloys with lowered concentrations of Cr and Co, and compositions with improved mechanical properties were obtained, though with a somewhat lowered coercivity [3].
In Fig. 5, three-core distributions are shown for the alloys remarkably different in properties.
Fig.4 Three-core distributions for different alloys and correlation functions. 1 – Fe-22Cr-15Co-9W; 2 –Fe-15Cr-13Co-8W.
Serikov, Journal of Physics: Conference Series 217 (2010) 012129
Belozerov, Journal of Alloys and Compounds, 509,(2010), 1813-1818.
Online since: May 2014
Authors: Valéria Mertinger, György Fegyverneki, Monika Tokár
The aim of our research work was the examination of cross-effects of strontium and antimony. 1.
Chemical compositions of the AlSi8Cu3 aluminium alloys used in the course of the experiments Elements Si Cu Mg Ti Sr Sb Fe Mn Pb Sn wt.% 8.85 2.53 0.30 0.10 0.0005 0.0040 0.51 0.35 0.05 0.01 We used AlSr10 (Al-10wt% Sr, wire) and AlSb10 (Al-10wt% Sb, ingots) master alloys.
So, series of alloys containing strontium between 5 and 300 ppm and antimony between 40 and 240 ppm were prepared.
The aim of our long-term research work is to study the effects of intermetallic compounds in Al-Si foundry alloys.
: Assessment of modification level of hypoeutectic Al-Si alloys by pattern recognition of cooling curves, China Foundry, Vol.2(4), pp.246-253, 2005
Online since: May 2012
Authors: Marin Gavrila, Claudiu Nicolicescu, Constantin Predescu
The aim of this research is to investigate the effect of MA parameters on the W/Cu materials used for electrical contacts.
T., Modeling of mechanical alloying Part III, Application of computational programs.
Journal of Refractory Metals & Hard Materials 28 (2010) 301–304 [9] Cheng Jigui, Wan Lei, Cai Yanbo, Zhu Jinchuan, Song Peng, Dong Jie, Fabrication of W–20wt.
%Cu alloys by powder injection molding, Journal of Materials Processing Technology 210 (2010) 137–142 [10] Sung-Soo Ryu, Gil-Su Kim, Jin-Chun Kim, Sung-Tag Oh, Young Do Kim, The influence of annealing temperature on the microstructural development of W–Cu composite powder prepared by high-energy ball milling.
Journal of Alloys and Compounds 424 (2006) 209–212.
Online since: September 2013
Authors: Mohd Arif Anuar Mohd Salleh, A.M. Mustafa Al Bakri, A. Abdullah, Kamarudin Hussin, Muhammad Hafiz Zan Hazizi, Zainal Ariffin Ahmad
Journal of Alloys and Compounds, 2009. 490(1-2): p. 110-117
Journal of Alloys and Compounds, 2009. 476(1-2): p. 199-206
Journal of Physics D: Applied Physics, 2008. 41(9): p. 095403
Journal of Alloys and Compounds, 2009. 478(1-2): p. 458-461
Journal of Electronic Materials, 2009. 39(2): p. 215-222
Online since: May 2014
Authors: Matthias Schmidtchen, Rudolf Kawalla, Stephan Reichelt, Haitham Saleh
On the Bonding Strength of Mg-Mg and Mg-Al Material Compounds Stephan Reichelt1,a, Haitham Saleh1,b, Matthias Schmidtchen1,c, Rudolf Kawalla1 ,d 1 TU Bergakademie Freiberg, Institute of Metal Forming, Bernhard-v.
This allows the comparability of different materials and alloys.
While for the alloys AZ31 and AM20 the initial state seems to have no influence.
Wu: The evolution of microstructures and mechanical properties during accumulative roll bonding of Al/Mg composite, Journal of Alloys and Compounds, 416 (2006), 169-172
Fatemi-Varzaneh: An analysis to plastic deformatiom behavior of AZ31 alloys during accumulative roll bonding process, Journal of Materials Science, 45 (2010), 4494-4500
Online since: July 2015
Authors: Mario Rosso, Federico Simone Gobber, Ildiko Peter
Tungsten carbide imparts the alloys the necessary strength and wear resistance, whereas cobalt contributes to the toughness and ductility of the alloys.
Special alloys, like nickel based alloys and titanium based alloys are difficult to machine especially due to the inherent characteristic of retaining good mechanical properties at high temperatures.
Coatings based on Ti containing compounds are used because they have greater resistance to wear and good cutting properties at high speed.
Ezugwu, An overview of the machinability of aeroengine alloys, Journal of Materials Processing Technology,134 (2003), pp.233-253
Choudhury, Machinability of Nickel - base super alloys: a general review, Journal of Materials Processing and Technology,77, (1998), pp.278-284
Online since: June 2012
Authors: Qing Ming Chang, Min Zhang, Chang Jun Chen
So in this study the aim is to manufacture steel/Al-foam core/steel sandwich panels by rolling of two steel-face sheet and Al-Si powders.
SEM and EDS of the compound interface are investigated.
It was concluded that a metallurgy bonding interface was formed by diffusion reaction and a brittle compound generated.
And FeAl3 was a kind of brittle compound, so when tearing the steel sheet it was just ripping out from the FeAl3 layer.
Kuribayashi: Scripta Materialia Vol. 50 (2004),p. 495 [4] Sun Yong, Shi Qingnan, Zhang Shuhong: Journal of Materials Processing Technology Vol. 63 (1997),p.438 [5] Zhang Shuhong, Sun Yong, Zhang Daiming: Journal of Materials Processing Technology Vol. 63 (1997),p.370 [6] Shi Qingnan, Zhang Shuhong, Sun Yong: Journal of .Materials Processing Technology Vol. 63 (1997),p.421
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