Search results

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.

Introduction Silicon is significant alloying element in aluminum alloys, which improves the fluidity and mechanical properties of Al-Si casting alloys and forms disperse precipitate particles to enhance the strength and toughness of Al-Si-Mg wrought alloys [1-2].
In this aspect, compound method which adds alloying elements to form Si-rich compounds in liquid metal was researched.
For example, calcium was chosen to form compounds containing silicon, Ca2Si and CaSi2Al2, which were separated from Al melt by filtration [5].
Nakamura, Removal of impurity silicon from molten aluminum ally with compound method, Journal of Japan Institute of Light Metals, 46 (1996) 488-491
Birol, Production of Al–Ti–B grain refining master alloys from B2O3and K2TiF6, Journal of Alloys and Compounds 443 (2007) 94-98.

Solidus and liquidus temperatures of the solder alloys were examined to study melting behaviors.
Figs. 2 and 3 illustrate solidus and liquidus temperatures of the solder alloys.
Fig. 3 Liquidus temperature of solder alloys Fig. 4 represents pasty range of the solders.
Fig. 4 Pasty range of solder alloys Fig. 5 illustrates the spread factor of solder alloys.
Journal of Alloys and Compounds. 2010; 491: 610-617

This paper aimed at investigating the effect of Sc on microstructures and corrosion properties of AZ91 magnesium alloy.
Chemical compositions of the studied alloys are listed in Table 1.
The optical micrographs of experimental alloys are shown in Fig.1.
Indissolvable spherical Al3Sc phase forms in AZ91 alloys containing Sc . 3.
A280(2000),p.30 [6] J.Grobner, R.Schmid-Fetzer: Joernal of Alloys and Compounds. 320(2001),p.296 [7] F.Von Buch,J.Lietzau and B.L.Mordike: materials science and engineering.

JILM was launched in 1951 aiming to promote science and technologies of light metals and to develop light metals industry.
Nano-hetero structure alloys The Fe contained in aluminum as an impurity element produces coarsened and irregular shape intermetallic compounds preferentially and normally affects extremely reduced mechanical properties, especially ductility.
The corrosion resistance also decreases by large Fe containing intermetallic compounds (Fe-IMCs).
If Si is not contained the binary Al3Fe compound is also produced.
These Fe-IMCs are harmful for aluminum alloys.

In this paper is presented an experiment whose aim is to determine the cutting forces that appear when machining Ti6Al4V titanium alloy, in order to optimize its working rate and productivity.
Titanium alloys are a continuous challenge.
Not to be forgotten that even the price of titanium and titanium alloys is high, the advantages of their use are considerable.
Moldovan, Elaboration of nonferrous alloys, Politehnica Press, Bucharest, 2009
Liu, Microstructure and tensile properties of Ti6Al4V/AM60B magnesium matrix composite, Journal of Alloys and Compounds 402 (2005) 162-169

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

Apart from pretreatment, the phase composition of the final product contains intermetallic compounds TiAl, TiAl3, Ti3Al5, as well as the small amount of residual Ti.
Introduction The production of composite materials and alloys with special properties is one of the main tasks in modern materials science.
The formation of compounds in the solid phase practically does not occur due to the low contact quality of dissimilar powders and small values of solid-phase diffusion coefficients [4].
Moore, Effect of heating rate on the combustion synthesis of Ti-Al intermetallic compounds, Journal of Material Science. 27 (1992) 6797-6806
Mukasyan, Influence of the high energy ball milling on structure and reactivity of the Ni + Al powder mixture, Journal of Alloys and Compounds. 577 (2013) 600-605.

The composition and structure of the obtained alloys are investigated.
Tungsten was in the composition of an intermetallic compound, doped ferrite and a chemical compound of tungsten, and iron W6Fe7 in the alloy.
It was possible to observe other compounds, for example, tungsten carbides W2C, formed by reduction of tungsten from WO3 .
According to chemical and phase analyzes, it was found that the alloy of the obtained samples contains compounds of intermetallic compounds Fe7W6, Fe4ZrC and carbides W2C and WC, ZrC3, but the total proportion of carbides is insignificant due to the insignificant carbon content in the welding wire and slag.
Journal of Advanced Materials (USA), (1) p. 75-78

The aim of this work was to investigate whether the explosively welded metals are susceptible to hydrogen degradation.
Hydrogen embrittlement of the ferritic and austenitic alloys was often observed following cathodic charging [4].
B,C,E,F- melted zones Hydrogen deteriorates structures and reduces mechanical properties of stainless steels, alloys, and low alloy steels as well as the cladded materials.
After H-charging the corrosion resistance of the clad alloys was reversed.
Journal of Alloys and Compounds, Volume 671, Pages 446-451 (2016) [4] M.