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Online since: December 2013
Authors: Viktor Konashkov, Arkadi Povodator, Vladimir Tsepelev, Vladimir V. Vyukhin, Ann Latipova
Melt Time-Temperature Treatment Affecting the Amorphous Ribbons’ Properties of the HTS-42 Solder
Vladimir Tsepelev, Viktor Konashkov, Vladimir Vyukhin, Arkadi Povodator, Ann Latipova
Boris Yeltzin Ural Federal University, Ekaterinburg, 620002, Russia
v.s.tsepelev@ustu.ru
Keywords: Kinematic viscosity; Magnetic susceptibility; Electrical resistivity; Critical temperature; Experimental melting; High speed melting; Amorphous ribbon; Ultimate strength; Soldered joint
Abstract.
The structure of ribbons produced by hardening from the melt of different temperatures is determined by two factors.
The joints, made by amorphous solders produced using the proposed technology, are of high quality mechanical properties, corrosive resistance and heat resistance.
Improving the mechanical properties of soldered joints made from precipitation hardened alloys with the durability degree of sв = 1000 МPа is ensured by their further heat treatment.
The joints made by the amorphous solder which had been produced by the technology proposed were characterized by a high level of mechanical properties, corrosion resistance and heat resistance.
The structure of ribbons produced by hardening from the melt of different temperatures is determined by two factors.
The joints, made by amorphous solders produced using the proposed technology, are of high quality mechanical properties, corrosive resistance and heat resistance.
Improving the mechanical properties of soldered joints made from precipitation hardened alloys with the durability degree of sв = 1000 МPа is ensured by their further heat treatment.
The joints made by the amorphous solder which had been produced by the technology proposed were characterized by a high level of mechanical properties, corrosion resistance and heat resistance.
Online since: June 2018
Authors: Lucian Vasile Diaconu, Pål Schmidt, Jessica Elfsberg, Peter Skoglund, Nulifer Ipek, Mari Larsson
As a consequence of the many factors influencing the TMF performance, CGI alloys may even be inferior to LGI alloys depending on the specific TMF-load conditions.
Mechanical properties from the static and the thermomechanical experiments.
The correlation factor between TMF-life and austenite fraction was in this case 0.82, while the corresponding correlation factors for the medium and long solidification times were insignificant.
The poor properties of the long solidification time specimens are attributed to the large graphite cell size which in this case controls the mechanical properties.
Varahram, Effect of cooling rate on microstructure and mechanical properties of gray cast iron, Mat.
Mechanical properties from the static and the thermomechanical experiments.
The correlation factor between TMF-life and austenite fraction was in this case 0.82, while the corresponding correlation factors for the medium and long solidification times were insignificant.
The poor properties of the long solidification time specimens are attributed to the large graphite cell size which in this case controls the mechanical properties.
Varahram, Effect of cooling rate on microstructure and mechanical properties of gray cast iron, Mat.
Online since: December 2022
Authors: Praveen Math, B.S. Praveen Kumar
The goal of this study is to improve several welding parameters that affect the mechanical properties of mild steel, including YS, UTS, toughness, and Vicker hardness (VHN).
To find out how different welding factors, including wire feed speed, welding current, and gas flow rate, affect mechanical qualities, statistical methods of signal to noise ratio (SNR) and analysis of variance (ANOVA) were used.
In total, pure Argon (Ar) was used as a shielding gas in this research work to avoid contamination of the weld pool, as pure argon has unique properties.
The Taguchi methodology is a power pull method for determining how welding process factors affect mechanical quality.
Experimental investiga- tion on mechanical and metallurgical properties of super duplex stainless steel joints using friction welding process, Journal of Manufacturing Process,15, (2013),558–71
To find out how different welding factors, including wire feed speed, welding current, and gas flow rate, affect mechanical qualities, statistical methods of signal to noise ratio (SNR) and analysis of variance (ANOVA) were used.
In total, pure Argon (Ar) was used as a shielding gas in this research work to avoid contamination of the weld pool, as pure argon has unique properties.
The Taguchi methodology is a power pull method for determining how welding process factors affect mechanical quality.
Experimental investiga- tion on mechanical and metallurgical properties of super duplex stainless steel joints using friction welding process, Journal of Manufacturing Process,15, (2013),558–71
Online since: September 2014
Authors: Ju Long Yuan, Zhao Zhong Zhou, Kai Ping Feng
Simulation results showed that the main factors affecting the wear of the fixed soft abrasive film were pressure and speed, which mainly affected the normal stress and the tangential stress respectively.
Micromechanics Material Parameters The discrete element method is used to simulation analysis as the discrete element model can reflect the dynamic mechanical properties of macroscopic scale through microcosmic-scale interactions between particles.
The macroscopic mechanical parameters not only concerned with the abrasive strength, the abrasive size, the abrasive shape and the distribution of the abrasive, but also concerned with the deformation and strength properties of abrasives and binder which can be measured by physical tests.
a) 0.1 ms b) 0.25 ms c) 0.45 ms d) 0.65 ms e) 1.0 ms Fig. 2 The surface morphology change in polishing process simulation Influence on Surface Topography As can be seen from the whole simulation process, the change of surface morphology is mainly affected by 2 factors: the tangential force and normal pressure.
Pressure affects surface stress, and relative velocity affects the tangential stress.
Micromechanics Material Parameters The discrete element method is used to simulation analysis as the discrete element model can reflect the dynamic mechanical properties of macroscopic scale through microcosmic-scale interactions between particles.
The macroscopic mechanical parameters not only concerned with the abrasive strength, the abrasive size, the abrasive shape and the distribution of the abrasive, but also concerned with the deformation and strength properties of abrasives and binder which can be measured by physical tests.
a) 0.1 ms b) 0.25 ms c) 0.45 ms d) 0.65 ms e) 1.0 ms Fig. 2 The surface morphology change in polishing process simulation Influence on Surface Topography As can be seen from the whole simulation process, the change of surface morphology is mainly affected by 2 factors: the tangential force and normal pressure.
Pressure affects surface stress, and relative velocity affects the tangential stress.
Online since: March 2010
Authors: Si Jie Chen, Si Jing Guo, Feng Liang
Furthermore, the properties of the joints were also tested.
The results indicate that with the increase of the pressure - from 2 MPa to 6 MPa - the microstructures and mechanical properties were improved, and more similar to those base alloys.
However, research has shown that the brittle intermetallic constituents, which have been demonstrated to be detrimental to the mechanical properties of joints, are often formed across the joint region in the TLP bonding process [8,9].
Results The tensile strength of joints The mechanical properties of the T91/12Cr2MoWVTiB TLP joints under different pressures are as shown in Table 1.
It is often noted that weld width is one of the important factors which can affect the joints properties.
The results indicate that with the increase of the pressure - from 2 MPa to 6 MPa - the microstructures and mechanical properties were improved, and more similar to those base alloys.
However, research has shown that the brittle intermetallic constituents, which have been demonstrated to be detrimental to the mechanical properties of joints, are often formed across the joint region in the TLP bonding process [8,9].
Results The tensile strength of joints The mechanical properties of the T91/12Cr2MoWVTiB TLP joints under different pressures are as shown in Table 1.
It is often noted that weld width is one of the important factors which can affect the joints properties.
Online since: May 2020
Authors: M.D. Sokolova, M.L. Davydova, A.F. Fedorova
The results of the study reveal the contribution of CO3 stabilizer in maintaining the stability of the physical and mechanical properties of BNKS-18: rubber containing CO3 has less property changes in the open air.
Studies of deformed specimens (by 30%) under the influence of climatic factors were also conducted.
Natural ageing of rubber is affected by changing climatic conditions: natural light, atmosphere precipitation and, partly, of ozone, temperature fluctuations and other factors.
Rubber samples modified with CO-3 demonstrated the best results on the stability of physical-mechanical properties in climatic tests.
Figure 2 presents the results of the study of samples deformed under the influence of climatic factors (30%).
Studies of deformed specimens (by 30%) under the influence of climatic factors were also conducted.
Natural ageing of rubber is affected by changing climatic conditions: natural light, atmosphere precipitation and, partly, of ozone, temperature fluctuations and other factors.
Rubber samples modified with CO-3 demonstrated the best results on the stability of physical-mechanical properties in climatic tests.
Figure 2 presents the results of the study of samples deformed under the influence of climatic factors (30%).
Online since: September 2011
Authors: Hai Xia Zhang, Guang Li Meng, Yue Jing Lv
For the natural sand is no-viscous bulk solid material with great variation on mechanical properties to traditional embankment filling, now there are some problems on the application of fine sand filling embankment engineering haven’t been analyzed such as the standardization of highway optimum structure system and road performance of fine sand filling embankment.
The analysis included geometrical and material properties of the slope ratio, the subgrade height, the presence or absence of the surrounding soil and the thickness of it, the top seal coat, pavement structure etc. and proposed the design suggestions of the optimum fine sand filling embankment based on the analysis above.
For the natural sand is no-viscous bulk solid material with great variation on mechanical properties to traditional embankment filling, now there are some problems on the application of fine sand filling embankment engineering haven’t been analyzed such as the standardization of highway optimum structure system and road performance of fine sand filling embankment.
Based on the analysis above the changing regulation of the slope stability was got and analyzed influence factors of stability regulation of the sand filling subgrade and then proposed some construction suggestions for improving subgrade slope stability.
The stability of sand filling subgrade is being affected with the slope ratio, the subgrade height, the presence or absence of the surrounding soil and the thickness of it, the top seal coat, pavement structure etc. if the height is higher than some value, the safety factor will decrease quickly, and the safety factor will also decrease quickly with the increase of slope ratio.
The analysis included geometrical and material properties of the slope ratio, the subgrade height, the presence or absence of the surrounding soil and the thickness of it, the top seal coat, pavement structure etc. and proposed the design suggestions of the optimum fine sand filling embankment based on the analysis above.
For the natural sand is no-viscous bulk solid material with great variation on mechanical properties to traditional embankment filling, now there are some problems on the application of fine sand filling embankment engineering haven’t been analyzed such as the standardization of highway optimum structure system and road performance of fine sand filling embankment.
Based on the analysis above the changing regulation of the slope stability was got and analyzed influence factors of stability regulation of the sand filling subgrade and then proposed some construction suggestions for improving subgrade slope stability.
The stability of sand filling subgrade is being affected with the slope ratio, the subgrade height, the presence or absence of the surrounding soil and the thickness of it, the top seal coat, pavement structure etc. if the height is higher than some value, the safety factor will decrease quickly, and the safety factor will also decrease quickly with the increase of slope ratio.
Online since: October 2014
Authors: Dragos Hodorogea
The characteristics of reinforcing fibers used in biocomposites, including source, type, structure, composition, as well as mechanical properties, will be reviewed.
The variety of biocomposite processing techniques as well as the factors (moisture content, fiber type and content, coupling agents and their influence on composites properties) affecting these processes will be discussed.
Their influence on mechanical performance (tensile, flexural and impact properties) will be evaluated.
All this factors influence their price which is lower than conventional raw materials.
They come from animal, vegetal or mineral sources and their use depends on many factors such as: type of matrix used, desired properties, economic part, environmental impact, their compatibility and so on.
The variety of biocomposite processing techniques as well as the factors (moisture content, fiber type and content, coupling agents and their influence on composites properties) affecting these processes will be discussed.
Their influence on mechanical performance (tensile, flexural and impact properties) will be evaluated.
All this factors influence their price which is lower than conventional raw materials.
They come from animal, vegetal or mineral sources and their use depends on many factors such as: type of matrix used, desired properties, economic part, environmental impact, their compatibility and so on.
Comparative Study of Factor of Saftey of Tunnel Segement by Adding Macro-Synthetic Fiber Using Ansys
Online since: February 2026
Authors: Ganesh S. Ingle, Amey Sawant
Nana et al. [8] Investigated the mechanical properties of fiber-reinforced concrete (FRC), emphasizing polypropylene macro-synthetic fibers.
Existing studies focus on variety of factors, including mechanical performance, durability, and crack resistance.
Testing 280 specimens, the study found enhanced mechanical properties and durability with Nano-silica and silica fume, while high PP fiber volumes adversely affected properties.
The study reveals a consistent internal heating rate, temperature gradient decrease with distance, and severe dehydration of hydrated products, adversely affecting mechanical properties.
Nana et al. [8] Investigated the mechanical properties of fiber-reinforced concrete (FRC), emphasizing polypropylene macro-synthetic fibers (SikaFiber Force-60).
Existing studies focus on variety of factors, including mechanical performance, durability, and crack resistance.
Testing 280 specimens, the study found enhanced mechanical properties and durability with Nano-silica and silica fume, while high PP fiber volumes adversely affected properties.
The study reveals a consistent internal heating rate, temperature gradient decrease with distance, and severe dehydration of hydrated products, adversely affecting mechanical properties.
Nana et al. [8] Investigated the mechanical properties of fiber-reinforced concrete (FRC), emphasizing polypropylene macro-synthetic fibers (SikaFiber Force-60).
Online since: April 2009
Authors: Carla I. Martins, Lyudmil V. Todorov, Julio Viana
The effect of nanofillers upon thermal, mechanical and structural properties in comparison
to the neat PET are discussed.
The macroscopic effects of the nanoparticles incorporated in the polymer matrix generally consist in the enhancement of mechanical performance, barrier properties, thermal stability, fire retardancy, etc.
Effects of nanoreinforcements upon the polymer bulk degradation, particles dispersion, thermal and mechanical properties of the nanocomposites in comparison to the neat PET were evaluated.
The presence of nanofillers is mainly affecting the cold crystallization temperature, Tcc, and the final degree of crystallization of PET nanocomposites.
The stress-strain curves of PET nanocomposites are shown in Fig. 3, and the summary of some mechanical properties is listed in Table 4.
The macroscopic effects of the nanoparticles incorporated in the polymer matrix generally consist in the enhancement of mechanical performance, barrier properties, thermal stability, fire retardancy, etc.
Effects of nanoreinforcements upon the polymer bulk degradation, particles dispersion, thermal and mechanical properties of the nanocomposites in comparison to the neat PET were evaluated.
The presence of nanofillers is mainly affecting the cold crystallization temperature, Tcc, and the final degree of crystallization of PET nanocomposites.
The stress-strain curves of PET nanocomposites are shown in Fig. 3, and the summary of some mechanical properties is listed in Table 4.