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Online since: August 2014
Authors: Iulian Riposan, Valentin Uta
The improved strength and ductility is a result of a spheroidizing Mg treatment of a base iron, which requires a critical residual Mg content (0.03-0.06%Mgres), usually accompanied by rare earth elements (REE), depending on the charge materials, base iron chemistry, castings characteristics, and the required structure and properties.
Their unique properties have made them crucial to a number of emerging and growing technologies, increasing their demand and strategic importance, and, consequently, the price.
The cumulative influence of the chemical composition of the Mg-treated irons as they affect pearlite content (factor Px, Equation 4) and anti-nodularising effect (factor K, Equation 5), according to Thielman’s factors [8] are included in Table 1.
Cooling rate (greater distance from the apex, lower cooling rate), REE contribution of Mg-treatment (low and high REE level) and post-nodulizing treatment (un-inoculated and inoculated irons) were seen to be the most important factors on carbide sensitivity and graphite phase quantity and characteristics (Figures 2-4).
Higher SSF, higher graphite phase quality, with benefits to the mechanical properties, especially for ductility.
Their unique properties have made them crucial to a number of emerging and growing technologies, increasing their demand and strategic importance, and, consequently, the price.
The cumulative influence of the chemical composition of the Mg-treated irons as they affect pearlite content (factor Px, Equation 4) and anti-nodularising effect (factor K, Equation 5), according to Thielman’s factors [8] are included in Table 1.
Cooling rate (greater distance from the apex, lower cooling rate), REE contribution of Mg-treatment (low and high REE level) and post-nodulizing treatment (un-inoculated and inoculated irons) were seen to be the most important factors on carbide sensitivity and graphite phase quantity and characteristics (Figures 2-4).
Higher SSF, higher graphite phase quality, with benefits to the mechanical properties, especially for ductility.
Online since: January 2022
Authors: B. Siddeswarappa, Mallikarjun Channalli, Prasanna P. Kulkarni
Chemical analysis of RHA &ASA
also preheating of the ashes results to remove carbon residues takes a relatively long period of time and higher temperatures with the consequent effect that silica is converted to crystalline forms [15].Burning out temperature and time are important factors to define whether silica remains amorphous as in RHA as well as ASA ash are become crystalline.
[2] Magudu .I.A, Abdulwahab .M, Aigbodion V.S, (2009) , “Effect of iron fillings on the properties and microstructure of cast fiber-polyester/iron filings particulate composite”, Journal of Alloys and Compounds, 476 ,807–811
A study on Properties of Rice Husk Ash and its Use as Cement Replacement Material.
A(2011): Production and Mechanical Properties of A356.2 /RHA Composites, International Journal of Advanced Science and Technology Vol. 33, 51-58
P(2011): Evaluation of Mechanical Properties of Al6061, Fly ash And E-Glass Fiber Reinforced Hybrid Metal Matrix Composites, ARPN Journal of Engineering and Applied Sciences, VOL. 6, NO. 5,40-44
[2] Magudu .I.A, Abdulwahab .M, Aigbodion V.S, (2009) , “Effect of iron fillings on the properties and microstructure of cast fiber-polyester/iron filings particulate composite”, Journal of Alloys and Compounds, 476 ,807–811
A study on Properties of Rice Husk Ash and its Use as Cement Replacement Material.
A(2011): Production and Mechanical Properties of A356.2 /RHA Composites, International Journal of Advanced Science and Technology Vol. 33, 51-58
P(2011): Evaluation of Mechanical Properties of Al6061, Fly ash And E-Glass Fiber Reinforced Hybrid Metal Matrix Composites, ARPN Journal of Engineering and Applied Sciences, VOL. 6, NO. 5,40-44
Online since: February 2014
Authors: Issam Hanafi, Khamlichi Abdellatif, Francisco Mata Cabrera
The main mechanical and thermal properties of work material are summarized in table 1.
Table 1: Mechanical and thermal properties of PEEK CF30 composite Mechanical and thermal properties PEEK CF30 Unit Tensile modulus 7700 MPa Density 1.41 g/cm3 Coefficient of thermal expansion at (< 150ºC) 25x10-6 m/m/K Coefficient of thermal expansion at (> 150ºC) 55x10-6 m/m/K Table 2: Machining parameters and their levels Low Medium High Cutting speed (m/min) 100 200 300 Depth of cut (mm) 0.25 0.75 1.5 Feed rate (mm/rev) 0.1 0.15 0.20 Dry turning experiments were carried out on a GORATU G CRONO 4S CNC machine.
Suitability of a given solution depends on various factors including user’s choice and problem environment.
Fig. 2 Simulation results for Population 500 and generation 100 By analyzing figure 1, the lowest value of machining force is obtained at point A, but the specific cutting pressure is greatly affected at that stage.
Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture.
Table 1: Mechanical and thermal properties of PEEK CF30 composite Mechanical and thermal properties PEEK CF30 Unit Tensile modulus 7700 MPa Density 1.41 g/cm3 Coefficient of thermal expansion at (< 150ºC) 25x10-6 m/m/K Coefficient of thermal expansion at (> 150ºC) 55x10-6 m/m/K Table 2: Machining parameters and their levels Low Medium High Cutting speed (m/min) 100 200 300 Depth of cut (mm) 0.25 0.75 1.5 Feed rate (mm/rev) 0.1 0.15 0.20 Dry turning experiments were carried out on a GORATU G CRONO 4S CNC machine.
Suitability of a given solution depends on various factors including user’s choice and problem environment.
Fig. 2 Simulation results for Population 500 and generation 100 By analyzing figure 1, the lowest value of machining force is obtained at point A, but the specific cutting pressure is greatly affected at that stage.
Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture.
Online since: May 2021
Authors: Wan Qiu Ding
The alloys’ designers then succeeded in optimizing the mechanical properties of these alloys.
It is the goal of this paper to define the evolution of the chemistry and mechanical properties of this class of alloys by focusing on the advantages and drawbacks resulting from these chemistry changes [5,6].
This is done by improving casting methods, chemical components and mechanical properties of the alloys that are utilized in the manufacturing of the rotor blades.
These factors allow for an optimal heat diffusion into the cold chamber within the Bridgman furnace.
Mechanical properties of conventionally cast, directionally solidified and single-crystal superalloys.
It is the goal of this paper to define the evolution of the chemistry and mechanical properties of this class of alloys by focusing on the advantages and drawbacks resulting from these chemistry changes [5,6].
This is done by improving casting methods, chemical components and mechanical properties of the alloys that are utilized in the manufacturing of the rotor blades.
These factors allow for an optimal heat diffusion into the cold chamber within the Bridgman furnace.
Mechanical properties of conventionally cast, directionally solidified and single-crystal superalloys.
Online since: October 2023
Authors: Ricardo J. Alves de Sousa, Fábio A.O. Fernandes, Guilherme J. A. Sousa, Ana R. S. Rocha, Gabriel F. Serra
Cork is renowned for its remarkable mechanical properties, including its high resistance to impact and low thermal and acoustic conductivities.
This unique porous structure gives the resulting material excellent thermal insulation properties.
Additionally, contents up to 10% of STF do not affect the mechanical behaviour in this region.
This study shows that by varying the amount of STF present, the sample's mechanical properties can be altered for a particular purpose.
Wagner, Dynamic properties of shear thickening colloidal suspensions, Rheol.
This unique porous structure gives the resulting material excellent thermal insulation properties.
Additionally, contents up to 10% of STF do not affect the mechanical behaviour in this region.
This study shows that by varying the amount of STF present, the sample's mechanical properties can be altered for a particular purpose.
Wagner, Dynamic properties of shear thickening colloidal suspensions, Rheol.
Online since: May 2004
Authors: Caetano Monteiro, Joaquim Barbosa, Sidney José Lima Ribeiro, Orlando M.N.D. Teodoro, Augusto M.C. Moutinho
Together with excellent mechanical and corrosion
properties at high temperatures, such characteristics are very attractive for applications in the
aeronautical, aerospace and automotive industries.
However, the current high selling price, due to high costs of production and raw materials and the need of very specific equipment, are limitative factors for further applications.
The comparison of such profiles with hardness ones gives insight in the role of the oxygen concentration in the properties of the alloy and in the choice of the most suitable materials for TiAl production Introduction During the last decade several intermetallic alloy systems have been identified as potential candidate materials for applications at high temperatures.
The best compromise between high temperature properties and room temperature ductility, is achieved with a two-phase microstructure (�2 + �), for a volume ratio �2 /� between 5 and 15%.
As a consequence, chemical composition gradients can be found, at room temperature, from the surface to the inside of castings, leading to significant changes in their mechanical and technological properties, like a surface hard case, usually called alpha-case.
However, the current high selling price, due to high costs of production and raw materials and the need of very specific equipment, are limitative factors for further applications.
The comparison of such profiles with hardness ones gives insight in the role of the oxygen concentration in the properties of the alloy and in the choice of the most suitable materials for TiAl production Introduction During the last decade several intermetallic alloy systems have been identified as potential candidate materials for applications at high temperatures.
The best compromise between high temperature properties and room temperature ductility, is achieved with a two-phase microstructure (�2 + �), for a volume ratio �2 /� between 5 and 15%.
As a consequence, chemical composition gradients can be found, at room temperature, from the surface to the inside of castings, leading to significant changes in their mechanical and technological properties, like a surface hard case, usually called alpha-case.
Online since: October 2025
Authors: Muhammed Zahid Sahin, Emre Uzun, Ibrahim Tekeoğlu
Researchers can increase the benefit by designing the nanoparticle with specific ligands on their surface to bind to the desired cells specifically without affecting other cells [23].
A summary of these properties is provided in Table 1 for comparison and clarity.
Designing a nanoparticle with consistent magnetothermal properties is not easy, as small variations in its physical or chemical properties can affect the outcome significantly.
As a result, they can easily be controlled by adjusting factors such as the field’s intensity and frequency.
Gold nanoparticles: Synthesis properties and applications.
A summary of these properties is provided in Table 1 for comparison and clarity.
Designing a nanoparticle with consistent magnetothermal properties is not easy, as small variations in its physical or chemical properties can affect the outcome significantly.
As a result, they can easily be controlled by adjusting factors such as the field’s intensity and frequency.
Gold nanoparticles: Synthesis properties and applications.
Online since: May 2012
Authors: Jian Li Yuan, Can Wang
The earthquake is the main factor causing serious damage of ancient pagodas.
In the current, the strengthening technology applied modern steel to hoop brick masonry of pagoda is widely used, which is effectively to improve the whole mechanical properties of the structure.
Lesser cross section and vertical compressive stress are the main factors led to shear and rupture failure of top masonry of pagoda under the repeated earthquake action.
Among them, weathering and salt efflorescence is the most important factors.
The durability of mortar is affected by hot and cold, dry and wet, freeze-thaw and other environmental factors.
In the current, the strengthening technology applied modern steel to hoop brick masonry of pagoda is widely used, which is effectively to improve the whole mechanical properties of the structure.
Lesser cross section and vertical compressive stress are the main factors led to shear and rupture failure of top masonry of pagoda under the repeated earthquake action.
Among them, weathering and salt efflorescence is the most important factors.
The durability of mortar is affected by hot and cold, dry and wet, freeze-thaw and other environmental factors.
Online since: June 2021
Authors: Teng Zhang, Su Mei Zheng
It facilitates the selection of the factors of the technological process which shortens the time and reduces the cost of production preparation [22].
Interactions, structure and properties in PLA/plastici-zed starch blends.
[9] Ke, T., Sun, X., Effects of moisture content and heat treatment on the physical properties of starch and poly (lactic acid) blends.
Physical and degradation properties of binary or ternary blends composed of poly (lactic acid), thermoplastic starch and GMA grafted POE.
Physical and thermal mechanical properties of corn starch/LDPE composites.
Interactions, structure and properties in PLA/plastici-zed starch blends.
[9] Ke, T., Sun, X., Effects of moisture content and heat treatment on the physical properties of starch and poly (lactic acid) blends.
Physical and degradation properties of binary or ternary blends composed of poly (lactic acid), thermoplastic starch and GMA grafted POE.
Physical and thermal mechanical properties of corn starch/LDPE composites.
Online since: March 2013
Authors: Mao Sheng Yang, Jing She Li, Li Guo Bai
Its mechanical properties such as strength and toughness to achieve a very high level of the Cr-Co-Mo-Ni bearing steel, because of containing many kinds of alloy elements (≥30%).
But due to the same reason, the mushy zone range is expanded, and the grain is coarsened, and the homogeneity of the alloys is decreased, due to the enrichment of high content of alloying elements in front of the solidification, in the solidification process of smelting, which eventually leads to the difference of the material properties [2].
The non-zero interpolation factor was distributed between CA unit cell and FE node of the finite element mesh respectively, and the grid cell in the temperature in unit cell of respectively was determined combine with these factors such as finite element node temperature.
Update the node temperature at nodes on the branches crystalline core, the growth process of the release of latent heat summation, using the same interpolation factor.
This directly affects the performance of the ESR ingot solidification structure.
But due to the same reason, the mushy zone range is expanded, and the grain is coarsened, and the homogeneity of the alloys is decreased, due to the enrichment of high content of alloying elements in front of the solidification, in the solidification process of smelting, which eventually leads to the difference of the material properties [2].
The non-zero interpolation factor was distributed between CA unit cell and FE node of the finite element mesh respectively, and the grid cell in the temperature in unit cell of respectively was determined combine with these factors such as finite element node temperature.
Update the node temperature at nodes on the branches crystalline core, the growth process of the release of latent heat summation, using the same interpolation factor.
This directly affects the performance of the ESR ingot solidification structure.