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Online since: February 2016
Authors: Alexey Korchunov, D.O. Pustovoytov, Alexander Pesin
Conventional approaches to increasing strength properties of aluminum alloys based on modification of their chemistry by alloying (Cu, Mg, Zn, Si, Li, Ag), and on development of heat treatment and thermomechanical treatment methods are almost exhausted [2], while the use of expensive alloying elements, for example, zirconium or scandium, increases the production cost of such alloys.
Some papers [7-10] show by experiments that asymmetric rolling of aluminum and its alloys forms the UFG structure.
This paper aims at a numerical study and simulation of grain evolution and dislocation density during asymmetric cold rolling of aluminum alloy 7075 in an SPD mode.
Vakhromov, High-strength Al-Zn-Mg-Cu alloys and light Al-Li alloys, Metal Science and Heat Treatment. 9 (2011) 27-33
[7] Loorentz, Gun Ko Young, Microstructure evolution and mechanical properties of severely deformed Al alloy processed by differential speed rolling, Journal of Alloys and Compounds. 536 (2012) 122-125
Some papers [7-10] show by experiments that asymmetric rolling of aluminum and its alloys forms the UFG structure.
This paper aims at a numerical study and simulation of grain evolution and dislocation density during asymmetric cold rolling of aluminum alloy 7075 in an SPD mode.
Vakhromov, High-strength Al-Zn-Mg-Cu alloys and light Al-Li alloys, Metal Science and Heat Treatment. 9 (2011) 27-33
[7] Loorentz, Gun Ko Young, Microstructure evolution and mechanical properties of severely deformed Al alloy processed by differential speed rolling, Journal of Alloys and Compounds. 536 (2012) 122-125
Online since: February 2013
Authors: N.S. Pushilina, A.M. Lider, V.N. Kudiiarov, M. Kroening
Very small concentration of hydrogen in metals and alloys can lead to irreparable defects, such as flakes in carbon steel, pores in aluminum and copper alloys, ductility reduction of titanium alloys [4,5].
In this context, the aim of this work is to develop methods for investigation of hydrogen distribution from the surface to the depth in technically pure titanium alloy with the help of glow discharge optical emission spectroscopy.
Particular case: hydrogen embrittlement of titanium alloys, International Journal of Hydrogen Energy. 34 (2009) 5976-5980L
Prubner, Effect of hydrogen on mechanical properties of titanium alloys, Sadhana. 28 (2003) 453-465
Eliezer, Hydrogen cracking in titanium-based alloys, Journal of Alloys and Compounds. 404-406 (2005) 621-625
In this context, the aim of this work is to develop methods for investigation of hydrogen distribution from the surface to the depth in technically pure titanium alloy with the help of glow discharge optical emission spectroscopy.
Particular case: hydrogen embrittlement of titanium alloys, International Journal of Hydrogen Energy. 34 (2009) 5976-5980L
Prubner, Effect of hydrogen on mechanical properties of titanium alloys, Sadhana. 28 (2003) 453-465
Eliezer, Hydrogen cracking in titanium-based alloys, Journal of Alloys and Compounds. 404-406 (2005) 621-625
Online since: April 2021
Authors: V.M. Gavrish, G.A. Baranov, Tatyana Chayka
The use of powder alloys in double sintering technology provides the material hardness and the strength increase.
Of scientific and practical interest is the use of nanopowders (TiN, Fe2O3,Y2O3, WC, TiC, SiC, VC, NbC, TiO2, Al2O3, MgO, ZrO2) to modify the structure of metals and their alloys with the aim of obtaining higher physical and mechanical properties of products [3,4,5,6,7,8].
The chemical composition of the studied alloys is given in table 1.
International Journal of Metalcasting, 10 (2016) 466–476
Fatemi-Mehr, Sintering variables optimization, microstructural evolution and physical properties enhancement of nano-WC ceramics, J.Alloys and Compounds,766 (2018) 672-677
Of scientific and practical interest is the use of nanopowders (TiN, Fe2O3,Y2O3, WC, TiC, SiC, VC, NbC, TiO2, Al2O3, MgO, ZrO2) to modify the structure of metals and their alloys with the aim of obtaining higher physical and mechanical properties of products [3,4,5,6,7,8].
The chemical composition of the studied alloys is given in table 1.
International Journal of Metalcasting, 10 (2016) 466–476
Fatemi-Mehr, Sintering variables optimization, microstructural evolution and physical properties enhancement of nano-WC ceramics, J.Alloys and Compounds,766 (2018) 672-677
Online since: March 2019
Authors: Abdul'azeez Abdu Aliyu, Ahmad Majdi Abdul-Rani, Turnad Lenggo Ginta, T.V.V.L.N Rao, Muhammad Ramli, Sadaqat Ali, Eugen Axinte
Introduction
Biomaterials such as stainless steel, Co-Cr alloys and Ti-alloys that are commonly used to produce implants or medical devices have several drawbacks like low strength, poor corrosion and wear resistance, and higher modulus of elasticity compared to the human bone.
Several peaks containing carbides (ZrC, TiC), oxides (CaZrO3, ZrO) and some unknown compounds were noticed.
Various biocompatible and bioactive compounds such as ZrC, CaZrO3, ZrO, TiC and HA were found deposited on the machined BMG surface.
Häussler, "Zr-Al-Co-Cu bulk metallic glasses for biomedical devices applications," Journal of Alloys and Compounds, vol. 729, pp. 144-149, 2017/12/30/ 2017
Radović, "Surface structural heterogeneity of high power plasma-sprayed hydroxyapatite coatings," Journal of Alloys and Compounds, vol. 687, pp. 421-430, 2016
Several peaks containing carbides (ZrC, TiC), oxides (CaZrO3, ZrO) and some unknown compounds were noticed.
Various biocompatible and bioactive compounds such as ZrC, CaZrO3, ZrO, TiC and HA were found deposited on the machined BMG surface.
Häussler, "Zr-Al-Co-Cu bulk metallic glasses for biomedical devices applications," Journal of Alloys and Compounds, vol. 729, pp. 144-149, 2017/12/30/ 2017
Radović, "Surface structural heterogeneity of high power plasma-sprayed hydroxyapatite coatings," Journal of Alloys and Compounds, vol. 687, pp. 421-430, 2016
Online since: March 2017
Authors: Libor Pantělejev, Jozef Kaiser, Daniel Koutný, David Paloušek
There are commonly used materials like steels, titanium and aluminium alloys, copper alloys but also precious metals like gold and platinum [2].
Although the most research works focused on aluminium alloys processing were devoted to AlSi10Mg alloy [3, 5, 8–11], some studies aimed at the aluminium high strength alloys were also conducted [12–16].
The aim of this paper is to explore the possibility of porosity reduction using remelting strategy during processing of EN AW 2618A aluminium alloy.
Biamino, et al., Additive Manufacturing of Al Alloys and Aluminium Matrix Composites (AMCs), Light Metal Alloys Applications (2014) 3–34
Attallah, The influence of the laser scan strategy on grain structure and cracking behaviour in SLM powder-bed fabricated nickel superalloy, Journal of Alloys and Compounds 615 (2014) 338-347
Although the most research works focused on aluminium alloys processing were devoted to AlSi10Mg alloy [3, 5, 8–11], some studies aimed at the aluminium high strength alloys were also conducted [12–16].
The aim of this paper is to explore the possibility of porosity reduction using remelting strategy during processing of EN AW 2618A aluminium alloy.
Biamino, et al., Additive Manufacturing of Al Alloys and Aluminium Matrix Composites (AMCs), Light Metal Alloys Applications (2014) 3–34
Attallah, The influence of the laser scan strategy on grain structure and cracking behaviour in SLM powder-bed fabricated nickel superalloy, Journal of Alloys and Compounds 615 (2014) 338-347
Online since: July 2005
Authors: Sung S. Park, Dae H. Kang, Geun Tae Bae, Nack Kim
The present research is aimed at developing the strip casting process for fabrication of Mg alloy
sheets.
Tensile properties of the strip cast alloys are listed in Table 1.
Tensile properties of the strip cast alloys.
One of the main advantages of strip casting is the refinement of intermetallic compounds, which usually exist as harmful coarse particles in conventionally processed alloys.
Kim: Journal of Rare Earth Vol. 22 S (2004), p. 78 [9] K.C.
Tensile properties of the strip cast alloys are listed in Table 1.
Tensile properties of the strip cast alloys.
One of the main advantages of strip casting is the refinement of intermetallic compounds, which usually exist as harmful coarse particles in conventionally processed alloys.
Kim: Journal of Rare Earth Vol. 22 S (2004), p. 78 [9] K.C.
Online since: May 2018
Authors: Clément Blanchard, Ming Tu Jia, Leandro Bolzoni
The aim of this work is to study the feasibility of using the blended elemental powder metallurgy route to produce titanium alloys parts, specifically considering the α+β Ti-5Al-2.5Fe alloy, by means of the conventional powder forging process seeking to synthesize fully dense Ti-5Al-2.5Fe components.
Meyers, Biomedical applications of titanium and its alloys, Jom 60(2008), 46-49
Gordo, Mechanical Behaviour of Pressed and Sintered CP Ti and Ti-6Al-7Nb Alloy Obtained from Master Alloy Addition Powder, Journal of the Mechanical Behavior of Biomedical Materials 20(2013), 149-161
Henriques, Microstructural evolution during sintering of the blended elemental Ti–5Al–2.5 Fe alloy, Journal of Alloys and Compounds 476(2009), 130-137
Collings, Materials properties handbook: titanium alloys, ASM international1993
Meyers, Biomedical applications of titanium and its alloys, Jom 60(2008), 46-49
Gordo, Mechanical Behaviour of Pressed and Sintered CP Ti and Ti-6Al-7Nb Alloy Obtained from Master Alloy Addition Powder, Journal of the Mechanical Behavior of Biomedical Materials 20(2013), 149-161
Henriques, Microstructural evolution during sintering of the blended elemental Ti–5Al–2.5 Fe alloy, Journal of Alloys and Compounds 476(2009), 130-137
Collings, Materials properties handbook: titanium alloys, ASM international1993
Online since: June 2011
Authors: Xiao Bing Ren, Gen Lian Fan, Zhi Qiang Li, Di Zhang
In the present study, aiming to provide a more comprehensive investigation to the role of hydrogen in Ti-Ni-based shape memory alloys, we systematically studied the hydrogen effect on martensitic transformation behavior, and twinning stress.
In the present paper, aiming to explore the overlooked hydrogen effect in shape memory alloys, we will systematically study the transformation behavior and mechanical properties in the H-containing and H-free Ti-Ni-based alloys.
Experimental Ti50Ni47Fe3 and Ti50Ni50 alloys were used in the present study.
Mazzolai, Journal of Alloys and Compounds 446 (2007) 204-207
Honma, Journal De Physique 43 (1982) 225-230
In the present paper, aiming to explore the overlooked hydrogen effect in shape memory alloys, we will systematically study the transformation behavior and mechanical properties in the H-containing and H-free Ti-Ni-based alloys.
Experimental Ti50Ni47Fe3 and Ti50Ni50 alloys were used in the present study.
Mazzolai, Journal of Alloys and Compounds 446 (2007) 204-207
Honma, Journal De Physique 43 (1982) 225-230
Online since: January 2020
Authors: Renat V. Gavariev, Igor A. Savin, Elena N. Soldatkina
Choice of Protective Coating of Metal Molds for Casting Non-Ferrous Alloys
R.V.
Adapted representation of the model for conditions of pressure die casting zinc alloys is presented in figure 2.
Leushin, Impact of the functional coating on service durability of injection molds for the zinc alloys pressure casting.
Çelik, Investigation of the abrasive wear behaviour of ZA-27 alloy and CuSn10 bronze, Journal of Materials Science, 46 (14) (2011) 4850-4857
Kechin, Role of Powder Precursors in Production of Composite Alloys Using Liquid-Phase Methods, Russian Journal of Non-Ferrous Metals.
Adapted representation of the model for conditions of pressure die casting zinc alloys is presented in figure 2.
Leushin, Impact of the functional coating on service durability of injection molds for the zinc alloys pressure casting.
Çelik, Investigation of the abrasive wear behaviour of ZA-27 alloy and CuSn10 bronze, Journal of Materials Science, 46 (14) (2011) 4850-4857
Kechin, Role of Powder Precursors in Production of Composite Alloys Using Liquid-Phase Methods, Russian Journal of Non-Ferrous Metals.
Online since: June 2012
Authors: Yan Wang, Jing Hu, Yuan Fang
Thermal oxidation treatment is a convenient and environmental friendly technique that can be used to harden the surface of titanium alloys, and hence improve the poor properties of the materials.
The aim of the paper is to study the oxidizing kinetics of the process at different temperatures.
Introduction Titanium and its alloys are widely use in a variety of applications ranging from aerospace, chemistry, and marine due to their high strength to weight ratio, excellent corrosion resistance and biocompatibility.
The wear resistance of these materials can be improved by surface modification, which is able to increase the surface hardness of titanium alloys and decrease their wear rate [3].
Journal of Alloys and Compounds Vol. 480(2009), p. 849–852 [2] H Dong, T Bell; Enhanced wear resistance of titanium surfaces by a new thermal oxidation Treatment.
The aim of the paper is to study the oxidizing kinetics of the process at different temperatures.
Introduction Titanium and its alloys are widely use in a variety of applications ranging from aerospace, chemistry, and marine due to their high strength to weight ratio, excellent corrosion resistance and biocompatibility.
The wear resistance of these materials can be improved by surface modification, which is able to increase the surface hardness of titanium alloys and decrease their wear rate [3].
Journal of Alloys and Compounds Vol. 480(2009), p. 849–852 [2] H Dong, T Bell; Enhanced wear resistance of titanium surfaces by a new thermal oxidation Treatment.