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Online since: February 2018
Authors: Mehmet Okan Erdal, Mustafa Koyuncu, Ibrahim Uslu, Mehmet Levent Aksu, Serhat Koçyiğit
The usual thermoelectric materials are alloys of chalcogenides (Bi2Te3, PbTe , skutterudites, clathrates, half-Heuslers, and oxides.
This may be attributed to the structural faults in the crystal structure of the compounds.
However it will definitely pave the way for the discovery of the new compounds.
Alloy.
Alloy.
This may be attributed to the structural faults in the crystal structure of the compounds.
However it will definitely pave the way for the discovery of the new compounds.
Alloy.
Alloy.
Online since: March 2016
Authors: Ren Bo Song, Fu Qiang Yang, Lei Chen, Yong Jin Wang, Zhong Hong Wang, Ke Guo, Zhi Dong Tan
Aging is a strengthening process, due to supersaturated compounds, dissolved in martensite, strengthened during aging, precipitate of which is Ni-Al intermetallic compound
The Aim of aging treatment of 0Cr17Ni7Al precipitation hardening stainless steel wire is to make supersaturated precipitation hardening alloy element Al dissolved in the matrix separate out in the form of intermetallic compound causing hardness of steel.
The inclusions can cause micro cracks during deformation; and the micro cracks expand gradually resulting in the failure of alloy [8].
Steel Wire Products, 2007, 33(6):34-36 [5] Cao Hongzhi, Cang Weiwei, Ma Feng, Chen Huahui, Fracture Failure Analysis of Stainless Steel Bolt, Lubrication Engineering, 2011,36(8):89-92 [6] Dong Peng, Jun Shen, Qin Tang, Cuiping Wu, Yanbing Zhou, Effects of aging treatment and heat input on the microstructures and mechanical properties of TIG-welded 6061-T6 alloy joints, International Journal of Minerals, Metallurgy andMaterials,2013.3,20(20)259 [7] Wang Chong, Zeng Yanping, Xie Xishan, Influence of characteristic inclusion parameters on crack initiation and propagation in ultra-high strength steels for aerospace application under tensile and low cyclic fatigue loading, Journal of University of Science and Technology Beijing, 2009, 31 (5):557-562 [8] Fan H M, Zeng Y P, Wang X S, et al.
The Aim of aging treatment of 0Cr17Ni7Al precipitation hardening stainless steel wire is to make supersaturated precipitation hardening alloy element Al dissolved in the matrix separate out in the form of intermetallic compound causing hardness of steel.
The inclusions can cause micro cracks during deformation; and the micro cracks expand gradually resulting in the failure of alloy [8].
Steel Wire Products, 2007, 33(6):34-36 [5] Cao Hongzhi, Cang Weiwei, Ma Feng, Chen Huahui, Fracture Failure Analysis of Stainless Steel Bolt, Lubrication Engineering, 2011,36(8):89-92 [6] Dong Peng, Jun Shen, Qin Tang, Cuiping Wu, Yanbing Zhou, Effects of aging treatment and heat input on the microstructures and mechanical properties of TIG-welded 6061-T6 alloy joints, International Journal of Minerals, Metallurgy andMaterials,2013.3,20(20)259 [7] Wang Chong, Zeng Yanping, Xie Xishan, Influence of characteristic inclusion parameters on crack initiation and propagation in ultra-high strength steels for aerospace application under tensile and low cyclic fatigue loading, Journal of University of Science and Technology Beijing, 2009, 31 (5):557-562 [8] Fan H M, Zeng Y P, Wang X S, et al.
Online since: April 2016
Authors: Zenon Ignaszak, Jakub Hajkowski
The paper describes influence of the structure type and its parameters on the mechanical properties of cast products (not subjected to plastic forming), made out of Al-Si-X alloys.
Due to occurrence of such elements as Fe, Cu, Mg, Mn in these alloys, the intermetallic phases crystallize additionally, affecting on the mechanical properties of the castings.
In order to modify the structure (besides own exogenous nuclei – the additional artificial substrates for nucleation), micro alloy additions are introduced into a liquid alloy in form of master alloys containing Ti and B (αphase refining) and Sr (changing the form of eutectic silicon precipitates).
In castings made out of aluminum alloys, the following porosity types can be distinguished: shrinkage, gas (e.g. hydrogen) or mixed – shrinkage gas origin [5].
Garcia: Journal of Alloys and Compounds 381 (2004), p.168 [16] S.
Due to occurrence of such elements as Fe, Cu, Mg, Mn in these alloys, the intermetallic phases crystallize additionally, affecting on the mechanical properties of the castings.
In order to modify the structure (besides own exogenous nuclei – the additional artificial substrates for nucleation), micro alloy additions are introduced into a liquid alloy in form of master alloys containing Ti and B (αphase refining) and Sr (changing the form of eutectic silicon precipitates).
In castings made out of aluminum alloys, the following porosity types can be distinguished: shrinkage, gas (e.g. hydrogen) or mixed – shrinkage gas origin [5].
Garcia: Journal of Alloys and Compounds 381 (2004), p.168 [16] S.
Online since: October 2008
Authors: Wido H. Schreiner, Josefina Ballarre, Sergio A. Pellice, Silvia M. Ceré
a
jballarre@fi.mdp.edu.ar , b
spellice@fi.mdp.edu.ar , cwido@fisica.ufpr.br , dsmcere@fi.mdp.edu.ar
Keywords: protection, nanoparticles, orthopaedics alloys, sol gel coatings, bioactivity.
In this work there are analyzed two kinds of protective organic-inorganic coatings made by sol gel technique with the adding of silica particles, in order to increase the barrier effect of the coating, and glass-ceramic (GC) particles with the aim of generating bioactivity.
The addition of bioactive particles, that conducts to the dissolution and re-deposition of apatite like inorganic compounds, has been studied as an attempt to provide a bone-like formation and adhesion to the existing structure, since metallic materials do not have the ability to create a natural bonding with the existing bone [2-3].
In this work there are analyzed two types of protective organic-inorganic coatings made by sol gel technique with the adding of two different kinds of particles: in one hand silica particles in order to increase the barrier effect of the coating and, in the other hand, glass-ceramic particles with the aim of generating bioactivity.
Journal of Non Crystalline Solids 348 (2004) 218-224
In this work there are analyzed two kinds of protective organic-inorganic coatings made by sol gel technique with the adding of silica particles, in order to increase the barrier effect of the coating, and glass-ceramic (GC) particles with the aim of generating bioactivity.
The addition of bioactive particles, that conducts to the dissolution and re-deposition of apatite like inorganic compounds, has been studied as an attempt to provide a bone-like formation and adhesion to the existing structure, since metallic materials do not have the ability to create a natural bonding with the existing bone [2-3].
In this work there are analyzed two types of protective organic-inorganic coatings made by sol gel technique with the adding of two different kinds of particles: in one hand silica particles in order to increase the barrier effect of the coating and, in the other hand, glass-ceramic particles with the aim of generating bioactivity.
Journal of Non Crystalline Solids 348 (2004) 218-224
Online since: September 2016
Authors: Dmitriy V. Pronichev, Leonid Moiseevich Gurevich, M.D. Trunov
However, slow rate of diffusion processes at the bond area of welded metals restricts the amount of intermetallic compound in such materials.
One of the possible ways to increase the amount of intermetallic compound is to utilize explosion welding at high regimes to join composite base metals.
The present study aims to investigate structure, properties and chemical composition of molten zones, formed during explosion welding of Al/Cu laminated composite.
This is apparently caused by the decline in volume ratio of intermetallic compound in molten zones.
Evolution of ideas, Journal of Materials Processing Technology 212(1) (2012) 150-156
One of the possible ways to increase the amount of intermetallic compound is to utilize explosion welding at high regimes to join composite base metals.
The present study aims to investigate structure, properties and chemical composition of molten zones, formed during explosion welding of Al/Cu laminated composite.
This is apparently caused by the decline in volume ratio of intermetallic compound in molten zones.
Evolution of ideas, Journal of Materials Processing Technology 212(1) (2012) 150-156
Online since: April 2019
Authors: Azhan Hashim, Norihan Yahya, Mardhiah Abdullah, Mohamed Najmi Naquib Mohamed Zainal Abidin, Azman Kasim
Therefore, the aim of the work is to estimate on the physical and structural properties of Dy3+ doped barium borate glass.
Journal of Luminescence, 183, 79-88
Journal of Alloys and Compounds, 660, 347-355
Journal of Luminescence, 169,121-127
Alloy.
Journal of Luminescence, 183, 79-88
Journal of Alloys and Compounds, 660, 347-355
Journal of Luminescence, 169,121-127
Alloy.
Online since: July 2011
Authors: Ping Feng, Song Jin, Teng Biao Zheng
This paper aimed at investigation of the rheological characteristic of slurry and charge characteristic.
Guo: Journal of Inorganic Materials, Vol 12 (1997), p.191-194 (In Chinese) [4] P.
Ramakrishnan: Journal of Alloys and Compounds, Vol 453 (2008), p.215–221 [9] J.X.
Iwasa: Journal of Colloid Interface, Vol 286(2005).
Jiang, etc: Journal of Colloid and Interface Science, Vol 286 (2005), p.209-215
Guo: Journal of Inorganic Materials, Vol 12 (1997), p.191-194 (In Chinese) [4] P.
Ramakrishnan: Journal of Alloys and Compounds, Vol 453 (2008), p.215–221 [9] J.X.
Iwasa: Journal of Colloid Interface, Vol 286(2005).
Jiang, etc: Journal of Colloid and Interface Science, Vol 286 (2005), p.209-215
Online since: December 2010
Authors: Claudio Shyinti Kiminami, Walter José Botta Filho, Daniel Rodrigo Leiva, Claudemiro Bolfarini, Tomaz Toshimi Ishikawa, Alberto Moreira Jorge, Gisele Ferreira De Lima
In the present work, we used the HPT technique for the processing of Mg2FeH6 powders obtained by high-energy reactive ball milling aiming to produce refined grain bulk material with high density of defects, which can result in interesting hydrogen storage properties.
Cai, International Journal of Hydrogen Energy, 32 (12) (2007) 1860–1868 [5] J.
Schulz, Journal of Alloys and Compounds, 293–295 (1999) 495–500 [6] Y.
Alloys Comp. 386 (2005) 253-257
Alloys Comp. 436 (2007) 99-106
Cai, International Journal of Hydrogen Energy, 32 (12) (2007) 1860–1868 [5] J.
Schulz, Journal of Alloys and Compounds, 293–295 (1999) 495–500 [6] Y.
Alloys Comp. 386 (2005) 253-257
Alloys Comp. 436 (2007) 99-106
Online since: September 2018
Authors: Gláucio Soares da Fonseca, Carlos Roberto Xavier, José Adilson de Castro, D.S.S. Almeida, L.C.R. Lopes, Elizabeth Mendes de Oliveira
Although some attempts have been done aiming at the direct simulation of the ionized arc [2-5], in this paper the heat source is modeled by the double ellipsoid functions with the parameters adjusted using inverse technique to match the welding pool depth and thermocouple measurements, which is more reliable for engineering applications [5-7].
Saatchi: Journal of Alloys and Compounds Vol. 509 (2011), p. 782
Saatchi: Journal of Alloys and Compounds Vol. 509 (2011), p. 782