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Online since: January 2014
Authors: Rong Hua Zhang, Bao Hong Zhu, Xiao Ping Zheng
The uniform compactness of alloy organization guarantee that the alloy with good mechanical properties at room temperature and high temperature.
Fig.2 Mechanical properties of extruded spray forming 8009 heat-resistant aluminum alloys The fracture morphology of spray forming alloys after different extrusion process is shown in fig.3.
Microstructure and mechanical properties of dispersion-strengtened high-temperature A1-8.5Fe1.3V-1.7Si alloys produced by atomized melt deposition process[J].
Processing properties and applications of rapidly solidified advanced alloy powders[J].
Elevated temperature mechanical properties of a rapidly solidified Al-Fe-V-Si alloy[J].
Fig.2 Mechanical properties of extruded spray forming 8009 heat-resistant aluminum alloys The fracture morphology of spray forming alloys after different extrusion process is shown in fig.3.
Microstructure and mechanical properties of dispersion-strengtened high-temperature A1-8.5Fe1.3V-1.7Si alloys produced by atomized melt deposition process[J].
Processing properties and applications of rapidly solidified advanced alloy powders[J].
Elevated temperature mechanical properties of a rapidly solidified Al-Fe-V-Si alloy[J].
Online since: May 2010
Authors: Ingvar L. Svensson, Martin Selin, Daniel Holmgren
Some important material properties
that are affected by the graphite shape are tensile strength and thermal conductivity.
Introduction Graphite morphology influences a lot of mechanical properties in cast iron.
The reason for this variation in properties is due to the growth direction of the graphite crystal, Figure 1, [1-4].
Compacted graphite iron (CGI) has vermicular shaped graphite resulting in mechanical properties intermediate those of ductile and grey cast iron [5, 6].
Lampic, The mechanical and physical properties of compacted graphite iron.
Introduction Graphite morphology influences a lot of mechanical properties in cast iron.
The reason for this variation in properties is due to the growth direction of the graphite crystal, Figure 1, [1-4].
Compacted graphite iron (CGI) has vermicular shaped graphite resulting in mechanical properties intermediate those of ductile and grey cast iron [5, 6].
Lampic, The mechanical and physical properties of compacted graphite iron.
Online since: November 2013
Authors: Evgenia A. Kuleshova, Maxim A. Artamonov, Artem D. Erak
Investigation of the microstructure factors affecting the brittle fracture initiation of pre-cracked Charpy-type samples of VVER-1000 RPV steel
E.A.
Introduction Operation of nuclear reactors under neutron irradiation and long-term thermal exposition there leads to continuous changes of mechanical properties of reactor pressure vessel (RPV) materials.
Therefore in order to ensure safety operation nuclear reactor, mechanical properties of RPV steel are subjected to strict control both during the manufacture and operation.
One of key fracture toughness parameters is critical stress intensity factor KJc calculated using J-integral value.
Introduction Operation of nuclear reactors under neutron irradiation and long-term thermal exposition there leads to continuous changes of mechanical properties of reactor pressure vessel (RPV) materials.
Therefore in order to ensure safety operation nuclear reactor, mechanical properties of RPV steel are subjected to strict control both during the manufacture and operation.
One of key fracture toughness parameters is critical stress intensity factor KJc calculated using J-integral value.
Online since: October 2022
Authors: Zhi Chao Xu, Xue Feng Guo, Hong Bao Cui, Wen Peng Yang, Liang Chen, Ying Wang
Alloying is an effective method to improve the mechanical properties.
Therefore, directed by above issue, this work revealed the impact of extrusion texture on the mechanical properties by studying the microstructure, texture, and tensile properties of hot extruded samples obtained at a temperature range of 300 ℃ to 400 ℃.
The tensile properties of the hot extruded sample are shown in Fig. 4.
Tsai, Textures and mechanical properties in rare-earth free quasicrystal reinforced Mg-Zn-Zr alloys prepared by extrusion.
Adeva, Effect of forging on the microstructure and mechanical properties of Mg-Zn-Y alloy.
Therefore, directed by above issue, this work revealed the impact of extrusion texture on the mechanical properties by studying the microstructure, texture, and tensile properties of hot extruded samples obtained at a temperature range of 300 ℃ to 400 ℃.
The tensile properties of the hot extruded sample are shown in Fig. 4.
Tsai, Textures and mechanical properties in rare-earth free quasicrystal reinforced Mg-Zn-Zr alloys prepared by extrusion.
Adeva, Effect of forging on the microstructure and mechanical properties of Mg-Zn-Y alloy.
Online since: November 2024
Authors: Salman Khan, Khadija Khadija, Massab Junaid
The microstructural and mechanical properties of the bonding interface were evaluated via lap shear and micro hardness tests, X-ray diffraction, and Optical microscopy.
It was influenced by four different types of factors, including surface preparation, bonding environment (vacuum or shielding gas), and interlayer between the joining materials, all affect diffusion bonding [11–13].
Paidar, Effect of bonding pressure on microstructure and mechanical properties of aluminium/copper diffusion-bonded joint, Sadhana - Acad.
Wang, Influence of diffusion brazing parameters on microstructure and properties of Cu/Al joints, J.
Shirzadi, Diffusion bonding of copper alloy to nickel-based superalloy: effect of heat treatment on the microstructure and mechanical properties of the joints, Sci.
It was influenced by four different types of factors, including surface preparation, bonding environment (vacuum or shielding gas), and interlayer between the joining materials, all affect diffusion bonding [11–13].
Paidar, Effect of bonding pressure on microstructure and mechanical properties of aluminium/copper diffusion-bonded joint, Sadhana - Acad.
Wang, Influence of diffusion brazing parameters on microstructure and properties of Cu/Al joints, J.
Shirzadi, Diffusion bonding of copper alloy to nickel-based superalloy: effect of heat treatment on the microstructure and mechanical properties of the joints, Sci.
Online since: October 2024
Authors: Lidya Risang Ayu, Lienda Aliwarga, Sanggono Adisasmito
Moringa seeds high quality protein and vegetable fat, make them become a useful source of active coagulant and disinfectants because of their positively charged protein molecules and their antimicrobial properties.
The yield of the oil obtained varies depending on several factors such as extraction temperature, extraction time, ratio of seeds weight to solvent volume, type of solvent used, and stirring in the extraction process which affects the yield of oil from the extraction process using solvents [4], [13], [21].
Grain moisture content, operating pressure, pressing temperature, and pressing time are factors that affect oil recovery from the pressing process [22]–[28]. 2.
The difference in the saponification number is due to several factors such as different hydrolysis process times, the effect of using different hydrolysis temperatures, and oil storage which also affect the saponification number of Moringa seed oil [16], [21], [35]. 3.4.3 Acid value of Moringa oil The acid value obtained in this study showed results that tended to increase with the addition of the pressing temperature, both with a moisture content of 8% Moringa seeds and a moisture content of 16% Moringa seeds.
Innocent, “Physico-chemical and Antioxidant Properties of Moringa oleifera Seed Oil,” Pakistan J.
The yield of the oil obtained varies depending on several factors such as extraction temperature, extraction time, ratio of seeds weight to solvent volume, type of solvent used, and stirring in the extraction process which affects the yield of oil from the extraction process using solvents [4], [13], [21].
Grain moisture content, operating pressure, pressing temperature, and pressing time are factors that affect oil recovery from the pressing process [22]–[28]. 2.
The difference in the saponification number is due to several factors such as different hydrolysis process times, the effect of using different hydrolysis temperatures, and oil storage which also affect the saponification number of Moringa seed oil [16], [21], [35]. 3.4.3 Acid value of Moringa oil The acid value obtained in this study showed results that tended to increase with the addition of the pressing temperature, both with a moisture content of 8% Moringa seeds and a moisture content of 16% Moringa seeds.
Innocent, “Physico-chemical and Antioxidant Properties of Moringa oleifera Seed Oil,” Pakistan J.
Online since: September 2013
Authors: Jae Ik Cho, Young Chan Kim, Se Weon Choi, Cheol Woo Kim
Also, the alloy needs to have sufficient mechanical properties to minimize deformation after die casting.
Control of the alloying elements and their amount is important factors to have an alloy system for heat sink component.
The commercially pure aluminum with 99.7% purity and ADC12 were also examined to compare the thermal conductivity and mechanical properties.
Note that up to 2.0wt.% of each element and total of 1.6~2.7wt.% of alloying elements were not significantly affected the tensile properties of aluminum.
There are several important factors affecting the fluidity, such as melt and mold temperature, superheat etc., but their effects were not significant in die casting because it uses extremely high pressure to fill.
Control of the alloying elements and their amount is important factors to have an alloy system for heat sink component.
The commercially pure aluminum with 99.7% purity and ADC12 were also examined to compare the thermal conductivity and mechanical properties.
Note that up to 2.0wt.% of each element and total of 1.6~2.7wt.% of alloying elements were not significantly affected the tensile properties of aluminum.
There are several important factors affecting the fluidity, such as melt and mold temperature, superheat etc., but their effects were not significant in die casting because it uses extremely high pressure to fill.
Online since: January 2012
Authors: Rustam Kaibyshev, Anna Mogucheva, Dmitriy Zyabkin
Nowadays, dimensions of commercial cables with Al-C e wire are determined by workability of these alloys rather than their physical properties; a lowest 1mm diameter is determined by technological factors.
Thus, the aim of the present study is to evaluate the effect of ECAP on mechanical properties and electric conductivity.
Mechanical properties.
It is worth noting that increase temperature from 550 to 600oC affects insignificantly mechanical properties.
Effect of 3h annealing on mechanical properties of the Al-Ce alloy subjected to ECAP up to ε~4 at room temperature.
Thus, the aim of the present study is to evaluate the effect of ECAP on mechanical properties and electric conductivity.
Mechanical properties.
It is worth noting that increase temperature from 550 to 600oC affects insignificantly mechanical properties.
Effect of 3h annealing on mechanical properties of the Al-Ce alloy subjected to ECAP up to ε~4 at room temperature.
Online since: December 2012
Authors: Hanizam Awang, Muhammad Hafiz Ahmad
It does not seem to modify the LFC performance or its mechanical properties.
There are five tests conducted covering mechanical properties and durability.
Conclusion Considering all the factors discussed, it is drawn to conclude that steel fibre has the most contribution in terms of mechanical strength.
Greenwood : Mechanical properties and durability of advantex glass fibre composites.
Vogel. : Mechanical Properties of Steel Fibre Reinforced Concrete Beams.
There are five tests conducted covering mechanical properties and durability.
Conclusion Considering all the factors discussed, it is drawn to conclude that steel fibre has the most contribution in terms of mechanical strength.
Greenwood : Mechanical properties and durability of advantex glass fibre composites.
Vogel. : Mechanical Properties of Steel Fibre Reinforced Concrete Beams.
Online since: September 2011
Authors: Ming Chuen Yip, Wei Jen Chen, Ming Yuan Shen, Yi Luen Li, Chin Lung Chiang
Creep Behavior and Mechanical Properties of Carbon Fiber Nano-Composites
Yi-Luen Li1,a, Ming-Yuan Shen1, b, Wei-Jen Chen1, c, Chin-Lung Chiang2, d and Ming-Chuen Yip*,1,e
1 Department of Power Mechanical Engineering, National Tsing Hua University, Hsin-Chu, Taiwan
2 Department of Safety, Health and Environmental Engineering, Hung-Kuang University, Taichung, Taiwan
ad550309@yahoo.com.tw, bhbj678@seed.net.tw, cd937716@oz.nthu.edu.tw,
ddragon@sunrise.hk.edu.tw, emcyip@pme.nthu.edu.tw
Keywords: Carbon fiber, Carbon nanotube, Creep, Findley power law
Abstract.
In recent years, it has been observed that surface modification of carbon nanotubes(CNTs)influences on CNT’s distribution among epoxy resin and affects the mechanical properties of CNTs.
This investigation studies the consequent enhancement of the mechanical properties of CNTs.
The influence of adding various proportions of CNTs to the epoxy resin on the mechanical properties of the composites thus formed is investigated, and the strength of the material is tested at different temperatures.
Base on the results shown in Figs.2(b), 3(b) and 4(b) for creep modulus, it displays that the strength of composites declines with the increase of the applied stress, temperature and humidity, and it also demonstrates that these are all factors critically influence on the creep behavior and the strength of composites.
In recent years, it has been observed that surface modification of carbon nanotubes(CNTs)influences on CNT’s distribution among epoxy resin and affects the mechanical properties of CNTs.
This investigation studies the consequent enhancement of the mechanical properties of CNTs.
The influence of adding various proportions of CNTs to the epoxy resin on the mechanical properties of the composites thus formed is investigated, and the strength of the material is tested at different temperatures.
Base on the results shown in Figs.2(b), 3(b) and 4(b) for creep modulus, it displays that the strength of composites declines with the increase of the applied stress, temperature and humidity, and it also demonstrates that these are all factors critically influence on the creep behavior and the strength of composites.