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Online since: May 2014
Authors: Tomonori Kitashima, K.S. Suresh, Y. Yamabe-Mitarai, S. Iwasaki
The present study aims to quantify the properties of Ga-bearing near- titanium alloys in order to aid the future design of new compositions with Ga addition.
However, the effect of different amounts of Ga and Sn with an almost constant value but no more than 9 of the Al equivalence on mechanical properties has not been well understood.
Texture influences properties where large amount of plastic deformation is involved.
May be Grain boundary texture can affect the Creep rate under grain boundary sliding or grain boundary diffusion, but not blk texture.
Grain size, misorientation angles and grain aspect ratios were not significantly affected by Ga addition.
Online since: January 2010
Authors: Christophe Sigli, Bernard Bès, Dimitrios Tsivoulas, Phil B. Prangnell
Introduction It has been claimed that combined additions of Zr and Mn dispersoid forming elements in aluminum alloys offer a range of advantages, including improved mechanical properties [1] and better high strain rate superplasticity [2].
Furthermore, Cho and Bès [8] have reported that in a 2139 alloy all the mechanical properties, and especially fracture toughness, diminished compared to when only Mn additions were used.
Other data has shown that the solubility of Mn is not greatly affected by the presence of Zr, with only a marginal decrease reported [12].
Shahani: Aluminium Alloys: Their physical and mechanical properties (ICAA6), Toyohashi, Japan: JILM (1998), p. 87 [18] C.
Second International Conference on Aluminium Alloys-Their Physical and Mechanical Properties, Beijing, China (1990), p. 504
Online since: September 2011
Authors: Ming Song Liu, Chao Fan Wu, Xing Lin Wen
It has seriously affected waterproof coal pillar of the old empty water to reasonable leave and set, to bring coal mine production safety risks.
Height of water conducted fracture belts was affected by the mechanical properties and structure of overburden, mined area, seam dip, coal thickness, mining depth, overburden thickness, time, repeated mining and mining methods and roof management.
Is on Uncle Coal Mine, its the main factor with mechanical properties and structure of overburden, coal thickness, depth and mining method
Online since: October 2006
Authors: Hyung Pil Park, Byung Ohk Rhee, Baeg Soon Cha
Material property data for ABS-HI-121H from LG chemical Co. was supplied by Moldflow.
This may affect the surface morphology change of the product in the smaller cavity.
The resin viscosity would affect the filling-balance in the variable-runner system so that the process parameters influencing the resin viscosity should be considered carefully as the influencing factors to the filling-balance capability of the variable-runner system.
The difference is considered to be affected by the sensitivity of resin viscosity to temperature. 4.
Coulter, Conference proceedings of ASME International Mechanical Engineering Congress & Exposition, Washington, D.C., Vol. 3(2003) [3] D.
Online since: August 2015
Authors: Alin Cazac, Ioan Gabriel Sandu, Andrei Victor Sandu, Costică Bejinariu, Petru Lazăr
Factors that cause deterioration of reinforced concrete are: aggressive powders (powder soluble and hygroscopic salts) and aggressive gases, sea water, high temperature (fire), osmosis, the phenomenon of freeze-thaw [1-3].
The primary factor that affects the durability of reinforced concrete elements is combined transport of water and aggressive substances through the concrete structure, and between concrete and the environment with the effect of corrosion of concrete and reinforcement.
The literature shows that phosphate layers deposited on iron objects are compact and continuous with good surface properties.
The obtained structures show a good surface compactity and roughness, meaning that the obtained layer have good properties.
Corbu, Enhancing properties of reinforcing steel by chemical phosphatation, Applied Mechanics and Materials, 754-755 (2015) 310-314.
Online since: September 2014
Authors: Azmi Mohd Shariff, Oh Pei Ching, Asif Jamil
It is found that even at low clay loading (≤10 mass % clay); there is enhancement in thermal, mechanical, optical, electrical, flammability and barrier properties [16-20].
These morphologies offer significant improvement in mechanical, thermal and barrier properties of polymer-nanoclay hybrid materials [15].
Table 1: Transport properties of porous and non-porous fillers in different polymer matrix.
Koros, "Factors Controlling Successful Formation of Mixed-Matrix Gas Separation Materials," Industrial & Engineering Chemistry Research, vol. 39, pp. 2692-2696, 2000
Phillips, "Flammability Properties of Polymer Layered-Silicate Nanocomposites.
Online since: September 2013
Authors: Toshikazu Hanazato, Kazuhiko Nitto, Nanae Sadaka, Sachiho Hanazato, Yasufumi Uekita, Koji Sato, Kunihiko Ono, Subroto Yoyok, Pramitasari Diananta, Eugenius Pradipt
Material mechanical tests of timbers which used for structure were also conducted to examine the strength.
(See Fig.9) The damping factor was calculated from the waveform of free vibration test; 2.5% and 2.1% in X and Y direction, respectively.
There have been no reports on regarding to material properties of local wood in Nias.
Therefore, material tests of the wood were conducted to obtain fundamental mechanical properties of those wooden members used for the traditional wooden houses in South Nias.
The fundamental mechanical properties of Nias timbers were obtained in present study.
Online since: September 2013
Authors: Rozana A.M. Osman, Mohd Sobri Idris
Results show that the diffraction patterns of all samples were affected by changing oxygen partial pressure.
There was an additional factor that may contribute to the trends in N2 rather than the interlayer mixing alone.
The change in oxidation state of transition metal ions affects their ionic radii and bond length, M-O (M=Ni, Mn, Co) in the octahedral sites within the MO2 layer.
The lattice parameters and unit cell volume were fairly similar, but the atomic coordinate of z diverged slightly from the initial value. χ2 and overall statistics became better, with very low R-factors.
[5] Lee, K.S., Myung, S.T., Amine, K., Yashiro, H., and Sun, Y.K., Structural and Electrochemical Properties of Layered Li[Ni1-2xCoxMnx]O2 (x = 0.1-0.3) Positive Electrode Materials for Li-Ion Batteries.
Online since: August 2007
Authors: Kyung Sub Lee, Kyung Tae Hong, Deuck Seung Bae, Woo Sang Jung
The objective of the present paper is to investigate the effect of coarsening behavior of the MX nitrides during aging for up to 3000hours at 700 °C and, to clarify the factor which causes MX coarsening by a modeling of the MX coarsening process.
During exposure to elevated temperatures and creep stress, pronounced microstructure evolution occurs (recovery, grain and subgrain coarsening, precipitate coarsening), which causes the mechanical properties to deteriorate.
Factors affecting the coarsening rate of MX nitride precipitates are interfacial energy, γ, diffusion coefficient, D , solubility of particle in the matrix, ∞C , and molar volume in the particle, mV , in the case of a constant temperature.
Online since: October 2013
Authors: Ge Yan Fu, Shi Hong Shi, Mei Ling Tian, Liang Liang Yu
And the unmelted powder particles can easily attach to the inclined plane towards the light that affects the roughness of the parts.
The errors caused by accidental factors will produce tiny deviation between ΔZ and the single-layer thickness, and the tiny deviation will lead to significant influence on the forming process of the parts [2].
This method can eliminate the various unfavorable factors generated by visual observation to ensure the accuracy of the height.
In actual forming process, many factors will have an impact on the quality of molding surface, the most important of which is the phenomenon of surface oxidation and sticky powder.
Analysis of microstructure and properties Analysis of microstructure To observe the microstructure of the forming part, the metallographic sample is produced with the side wall of the thin-walled part, and respectively microstructures of the bottom, the middle and the top are taken photos.
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