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Influence of Heating and Cooling Rate on Phase Transformations Temperatures in EV31A Magnesium Alloy
Online since: April 2015
Authors: Andrzej Kiełbus, Roman Przeliorz
In case of more complex compounds, full thermophysical description of the system demands big amount of labour.
Modern magnesium alloys are characterized by a complex chemical composition.
Recent development of magnesium alloys is focused on wrought products and casting alloys, especially cast by semi-solid methods such as thixotropic method [6].
The aim of the research was to determine temperatures of phase transformations in EV31A magnesium alloy.
Han, Effects of ageing treatment on microstructures and properties of Mg-Gd-Y-Zr alloys with and without Zn addition, Journal of Alloys and Compounds 465 (2008) 232-238
Modern magnesium alloys are characterized by a complex chemical composition.
Recent development of magnesium alloys is focused on wrought products and casting alloys, especially cast by semi-solid methods such as thixotropic method [6].
The aim of the research was to determine temperatures of phase transformations in EV31A magnesium alloy.
Han, Effects of ageing treatment on microstructures and properties of Mg-Gd-Y-Zr alloys with and without Zn addition, Journal of Alloys and Compounds 465 (2008) 232-238
Online since: August 2013
Authors: Lenka Kunčická, Radim Kocich
Mg-Al-Zn based alloys (as well as all the magnesium alloys except those with lithium addition) crystallize in the HTU system.
In general, it can be said that AZ91D, AZ31 and AZ80 belong among the most investigated Mg-Al-Zn alloys.
Influence of the ECAP technology on this alloy is discussed in [21] as well, where the alloy was extruded in 1 to 6 passes with the aim of sample cross-section size influence on microstructure determination.
Journal of AMME. 2007; 20: 447–450
Journal of Alloys and Compounds. 2010;507;207-214 [11] Faraji G., Mashhadi M.M., Kim H.S..
In general, it can be said that AZ91D, AZ31 and AZ80 belong among the most investigated Mg-Al-Zn alloys.
Influence of the ECAP technology on this alloy is discussed in [21] as well, where the alloy was extruded in 1 to 6 passes with the aim of sample cross-section size influence on microstructure determination.
Journal of AMME. 2007; 20: 447–450
Journal of Alloys and Compounds. 2010;507;207-214 [11] Faraji G., Mashhadi M.M., Kim H.S..
Online since: December 2014
Authors: Claudio Shyinti Kiminami, W.J. Botta, C. Bolfarini, S. Pauly, J. Eckert, L.A. Basilio, E.M. Mazzer, P. Gargarella, R.D. Cava, T. Gustmann
Introduction
Shape memory alloys (SMAs) are a class of material that undergoes a reversible shape change after a plastic deformation.
Cu-based shape memory alloys have the advantage of large thermal and electrical conductivities and the system Cu-Al-Ni alloys are quite attractive due to better stabilisation against aging phenomena [2].
Kop: Rapid Prototyping Journal Vol. 14 (2008), p. 300
Huang: Thin Film Shape Memory Alloys.
Eckert: Submitted to Journal of Alloys and Compounds.
Cu-based shape memory alloys have the advantage of large thermal and electrical conductivities and the system Cu-Al-Ni alloys are quite attractive due to better stabilisation against aging phenomena [2].
Kop: Rapid Prototyping Journal Vol. 14 (2008), p. 300
Huang: Thin Film Shape Memory Alloys.
Eckert: Submitted to Journal of Alloys and Compounds.
Online since: March 2019
Authors: Quoc Manh Nguyen
The aim of this paper is to present the simulation and experiment of the welding butt-joint aluminum alloys to low carbon steel using Visual-weld software and the metal inert gas (MIG) welding process.
It includes bottom plates (AA5052 alloys) and low carbon steel plates (SS400 steel) with the same size 200x70x5mm.
All experiments were performed on aluminum sheet A5052 alloys and SS400 steel sheet with a thickness fixed of 5mm.
This is good indicator of how the alloys’ density in the welding bead is affected during the welding process.
It is typically used for estimating the alloys’ content along with the uniformity of the welding bead during the welding process.
It includes bottom plates (AA5052 alloys) and low carbon steel plates (SS400 steel) with the same size 200x70x5mm.
All experiments were performed on aluminum sheet A5052 alloys and SS400 steel sheet with a thickness fixed of 5mm.
This is good indicator of how the alloys’ density in the welding bead is affected during the welding process.
It is typically used for estimating the alloys’ content along with the uniformity of the welding bead during the welding process.
Online since: February 2013
Authors: Shu Hua Liang, Jun Tao Zou, Chen Zhang, Qiao Zhang
The goal is aimed at eliminating microstructure defects and improving its composition uniformity.
Electrodepositing amorphous Ni-W alloys for MEMS.
On the state of W in electrodeposited Ni-W alloys.
Journal of Molecular Catalysis A:Chemical; 2006,249:172–180
Journal of Alloys and Compounds; 2011,509(5):1501-1504
Electrodepositing amorphous Ni-W alloys for MEMS.
On the state of W in electrodeposited Ni-W alloys.
Journal of Molecular Catalysis A:Chemical; 2006,249:172–180
Journal of Alloys and Compounds; 2011,509(5):1501-1504
Online since: August 2015
Authors: Ilija Ivanchik, Daria Mul, Tatyana Zimoglyadova, Elena Kornienko, Ekaterina Drobyaz, Vladimir Bataev
In most cases these technological processes are accompanied by adding refractory compounds to a liquid melt in order to improve physical and mechanical properties of the coatings under formation [1-3].
The main advantages of non-vacuum electron beam cladding are a possibility to add refractory alloying components able to form high-strength compounds during solidification of a surface layer, a high heating velocity, a significant thickness of a cladded layer (up to 5 mm), the absence of cladded metal sputtering, and a high efficiency coefficient of equipment [5-10].
High-alloyed multicomponent self-fluxing Ni-based alloys consisting of Ni, Cr, Fe, Si and B are widely used for obtaining corrosion and wear resistant coating.
The aim of this investigation was to find appropriate technological solutions providing the formation of high-alloyed surface layers using the method of Ni-Cr-Fe-Si-B powder mixture cladding by an electron beam injected into the air atmosphere.
Siora, Kombinirovannaya lazerno-mikroplazmennaya naplavka poroshkami splavov sistemi Ni-Cr-B-Si (in Russian), The Paton welding journal. 715 (2012) 18-24
The main advantages of non-vacuum electron beam cladding are a possibility to add refractory alloying components able to form high-strength compounds during solidification of a surface layer, a high heating velocity, a significant thickness of a cladded layer (up to 5 mm), the absence of cladded metal sputtering, and a high efficiency coefficient of equipment [5-10].
High-alloyed multicomponent self-fluxing Ni-based alloys consisting of Ni, Cr, Fe, Si and B are widely used for obtaining corrosion and wear resistant coating.
The aim of this investigation was to find appropriate technological solutions providing the formation of high-alloyed surface layers using the method of Ni-Cr-Fe-Si-B powder mixture cladding by an electron beam injected into the air atmosphere.
Siora, Kombinirovannaya lazerno-mikroplazmennaya naplavka poroshkami splavov sistemi Ni-Cr-B-Si (in Russian), The Paton welding journal. 715 (2012) 18-24
Online since: April 2021
Authors: Vitaliy P. Kulevich, Valentin O. Kharlamov, Victor Georgievich Shmorgun
Corrosion of Fe-Ni-Cr, Fe-Cr-Al, and Fe-Ni-Cr-Al Alloys in H2/H2O/H2S Mixtures at 1200°C.
Impurities influence on oxidation kinetics of Fe-Ni-Cr-Al alloys.
Influence of in-situ Al2O3 content on mechanical properties of Al2O3 reinforced Fe–Cr–Ni alloys.
J. (1992) The oxidation of iron-aluminum alloys.
Researches into the structure of alloys.
Impurities influence on oxidation kinetics of Fe-Ni-Cr-Al alloys.
Influence of in-situ Al2O3 content on mechanical properties of Al2O3 reinforced Fe–Cr–Ni alloys.
J. (1992) The oxidation of iron-aluminum alloys.
Researches into the structure of alloys.
Online since: March 2016
Authors: Xiang Chen, Yan Xiang Li, Hua Wei Zhang, Yan Zhang, Yuan Liu
A new refractory alloy HfNbSi0.5TiVZr was synthesized by induction levitation melting with the aim to achieve an excellent strength and toughness balance of the Hf-Nb-Ti-Zr based alloy.
Biggish entropy is conducive to the formation of solid solution, while lower enthalpy will promote to form intermetallic compounds.
While when the two dominant factors out of this range, alloy systems easily occur intermetallic compound and BMGs.
Senkova, et al, Microstructure and room temperature properties of a high-entropy TaNbHfZrTi alloy, Journal of Alloys and Compounds, 509(2011) 6043-6048
[14] Chun-Ming Lin, Chien-Chang Juan, Chia-Hsiu Chang, et al, Effect of Al addition on mechanical properties and microstructure of refractory AlxHfNbTaTiZr alloys, Journal of Alloys and Compounds, 624(2015) 100-107
Biggish entropy is conducive to the formation of solid solution, while lower enthalpy will promote to form intermetallic compounds.
While when the two dominant factors out of this range, alloy systems easily occur intermetallic compound and BMGs.
Senkova, et al, Microstructure and room temperature properties of a high-entropy TaNbHfZrTi alloy, Journal of Alloys and Compounds, 509(2011) 6043-6048
[14] Chun-Ming Lin, Chien-Chang Juan, Chia-Hsiu Chang, et al, Effect of Al addition on mechanical properties and microstructure of refractory AlxHfNbTaTiZr alloys, Journal of Alloys and Compounds, 624(2015) 100-107
Online since: May 2011
Authors: Yi Zhu He, Guang Ping Cheng
Because Ni-coated Al powders are not self-fluxing alloys and don’t contain the alloy element lowing the melt point or forming slag, the laser cladding performance of the single Ni-coated Al powders is not ideal.
In addition, a small amount of other complex metal compounds may form or precipitate in reaction and cause second phase strengthening or precipitation strengthening effect.
Journal of Aeronautical Materials, Vol.23(12) (2003), p.29
[13] G.L.CHEN, J.P.LIN, in: Fundamentals of physics metallurgy on intermetallic compounds for structural application , edtied by Metallurgy Industry Press, Beijin (1999) , in Chinese
[14] J.T.GUO, in: Ordered intermetallic compound NiAl alloy, edtied by Science Press, Beijin (2003), in Chinese.
In addition, a small amount of other complex metal compounds may form or precipitate in reaction and cause second phase strengthening or precipitation strengthening effect.
Journal of Aeronautical Materials, Vol.23(12) (2003), p.29
[13] G.L.CHEN, J.P.LIN, in: Fundamentals of physics metallurgy on intermetallic compounds for structural application , edtied by Metallurgy Industry Press, Beijin (1999) , in Chinese
[14] J.T.GUO, in: Ordered intermetallic compound NiAl alloy, edtied by Science Press, Beijin (2003), in Chinese.
Online since: February 2013
Authors: L.G. Meng, C.F. Fang, N.N. Wu, X.G. Zhang
Among Mg-RE alloys, the properties of high strength Mg-Gd-Y-Zn alloy are preferred.
However, it is less reported that reinforced particles, whose validities have been proved in other common magnesium alloys, are used in high-strength Mg-RE alloys.
Li: Journal of Alloys and Compounds Vol.487 (2009), p. 202 [12] X.Q.
Huang: Journal of Alloys and Compounds Vol. 507 (2010), p. 137 [15] K.
Meng: Journal of Alloys and Compounds Vol. 481 (2009), p. 811 [16] T.
However, it is less reported that reinforced particles, whose validities have been proved in other common magnesium alloys, are used in high-strength Mg-RE alloys.
Li: Journal of Alloys and Compounds Vol.487 (2009), p. 202 [12] X.Q.
Huang: Journal of Alloys and Compounds Vol. 507 (2010), p. 137 [15] K.
Meng: Journal of Alloys and Compounds Vol. 481 (2009), p. 811 [16] T.