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Online since: December 2012
Authors: Bin Zhao, Pei Wen Hao
When processing the broken stones, problems still remain, including maximum aggregates size deviates from the graduation, greater variability of grain composition, the content of 0.075mm particles and elongated and flaky particles exceed the provided standard of coarse aggregate and so on[3-4].
In addition, many other factors also should be considered, such as the number of hot aggregate silos, the layout of screen and distribution uniformity of all hot aggregate silos, all of which also proved important means of improving the weighing accuracy of the mixing equipment. 3.2.2 Weighing by electronic scale The aggregates of all hot aggregate silos were put into the dosimeter for mixture measurement and the measuring course of mineral powder and asphalt will ultimately decide the asphalt mixture gradation and the asphalt-aggregate ratio.
In addition, many other factors also should be considered, such as the number of hot aggregate silos, the layout of screen and distribution uniformity of all hot aggregate silos, all of which also proved important means of improving the weighing accuracy of the mixing equipment. 3.2.2 Weighing by electronic scale The aggregates of all hot aggregate silos were put into the dosimeter for mixture measurement and the measuring course of mineral powder and asphalt will ultimately decide the asphalt mixture gradation and the asphalt-aggregate ratio.
Online since: September 2014
Authors: John L. Jorstad, Alois Franke
But thixocasting’s competitiveness has been severely hampered by a limited number of sources producing the required billet (and those that do, produce very few alloys and billet sizes).
THT’s Sub-Liquidus Casting (SLC™) process [9] requires pouring well grain refined melt into their large vertical shot sleeve, rapidly cooling it to the semi solid temperature and injecting it through a gate plate into a die cavity positioned immediately above.
THT’s Sub-Liquidus Casting (SLC™) process [9] requires pouring well grain refined melt into their large vertical shot sleeve, rapidly cooling it to the semi solid temperature and injecting it through a gate plate into a die cavity positioned immediately above.
Online since: May 2014
Authors: Ludo Froyen, Bin Zhou
Besides, this growth phenomenon occurs in a multi-component alloy system and is promoted by the addition of a grain refiner, which makes the problem more complex but closer to reality.
Each particle can be identified by a unique particle number corresponding to a centroid Z position, a volume size ( Fig. 3(a) and (d)) and a defined height ( Fig. 3(c) and (f)).
Each particle can be identified by a unique particle number corresponding to a centroid Z position, a volume size ( Fig. 3(a) and (d)) and a defined height ( Fig. 3(c) and (f)).
Online since: April 2006
Authors: Takao Hanawa
Table 1 Standardized titanium and titanium alloys
Grade name Type UNS number ASTM standard ISO standard
Ti CP-1 α R50250 ASTM F 67 ISO 5832-2
Ti CP-2 α R50400 ASTM F 67 ISO 5832-2
Ti CP-3 α R50550 ASTM F 67 ISO 5832-2
Ti CP-4 α R50700 ASTM F 67 ISO 5832-2
Ti-3Al-2.5V α+β R56320 ASTM B 348 -
Ti-5Al-2.5Fe α+β - - ISO 5832-10
Ti-6Al-4V α+β R56400 ASTM F 1472 ISO 5832-3
Ti-6Al-4V ELI α+β R56401 ASTM F 136 ISO 5832-3
Ti-6Al-7Nb α+β R56700 ASTM F 1295 ISO 5832-11
Ti-15Mo β R58150 ASTM F 2066 -
Ti-13Nb-13Zr β R58130 ASTM F 1713 -
Ti-12Mo-6Zr-2Fe β R58120 ASTM F 1813 -
Ti-45Nb β R58450 AMS 4982 -
Ti-35Nb-7Zr-5Ta β R58350 - -
Ti-55.8Ni Intermetallic - ASTM F 2063 -
Nickel-Free Stainless Steel
Nickel-free austenitic stainless steel with a high concentration of nitrogen and without nickel showing
high strength and corrosion resistance has been developed because nitrogen is an austenite former as
the same as nickel.
Also since grain growth is minimum, the balance between strength and ductility is possibly well.
Also since grain growth is minimum, the balance between strength and ductility is possibly well.
Online since: August 2018
Authors: Glenn W. Gale
Table I shows trends for scaling 3D NAND including number of tiers and critical dimensions (CDs).
For metallization, where grain boundary scattering of electrons leads to a dramatic increase in line resistivity with scaling, Co and Ru have been proposed as possible replacements for Cu [17].
For metallization, where grain boundary scattering of electrons leads to a dramatic increase in line resistivity with scaling, Co and Ru have been proposed as possible replacements for Cu [17].
Online since: May 2020
Authors: Oleg Girin, Ivan Kuzyayev, Valeriy Nikolsky, Vadim Yaris
Thus, under ordinary electrodeposition conditions, that is when the rotor was at rest (at k = 1, which corresponded to an overload of 1g), the morphology of the deposits surface was characterized by the usual faceted forms of grain aggregates (Fig. 1a).
Therewith, the second expansion theorem should be used in this form , (18) where – operator separating the real part from the imaginary part for a complex number; – valid poles for ; – positive complex poles for ; ; .
Therewith, the second expansion theorem should be used in this form , (18) where – operator separating the real part from the imaginary part for a complex number; – valid poles for ; – positive complex poles for ; ; .
Online since: February 2019
Authors: Gennady G. Mikhailov, Igor V. Bakin, Valery A. Golubtsov, Ivan V. Ryabchikov, Ludmila E. Dresvyankina
Poznyak [13], the presence of calcium atoms at the boundaries of the grains of metal leads to an increase in the metallic component of the bond, which contributes to an increase in the plasticity and cold resistance of the steel.
Increasing the mechanical characteristics of steel when processing complex alloys, may be associated with a decrease in the number of nonmetallic inclusions therein, due to favorable removal conditions from the metallic melt, and also by the strengthening action of calcium, as a microalloying element on the crystallizing metal. 3.
Increasing the mechanical characteristics of steel when processing complex alloys, may be associated with a decrease in the number of nonmetallic inclusions therein, due to favorable removal conditions from the metallic melt, and also by the strengthening action of calcium, as a microalloying element on the crystallizing metal. 3.
Online since: November 2016
Authors: X. Cao, Priti Wanjara, F. Mirakhorli, X.T. Pham, J.L. Fihey
Using a high energy density laser as a heating source allows deep penetration and fast welding speeds, thus reducing the heat input, size of the heat affected zone (HAZ), and the total number of passes needed to fill a thick butt joint.
The stress concentration in the δ and at the δ/g grain boundaries may locally initiate fine cracks that can then propagate during further cooling [9].
The stress concentration in the δ and at the δ/g grain boundaries may locally initiate fine cracks that can then propagate during further cooling [9].
Online since: October 2013
Authors: Wojciech Zębala, Robert Kowalczyk
The mechanical properties depend on amount of WC in the material structure, grain size of WC and the amount of metal binder in the material structure [5-6].
A number of standard othogonal arrays have been constructed to facilitate designs of experiments.
A number of standard othogonal arrays have been constructed to facilitate designs of experiments.
Online since: June 2015
Authors: Mohamad Zaky Noh, Uman Hassan, Zainal A. Ahmad
Table 1: Composition of the substitution of quartz by RHA (wt %)
Mix Number
Clay
Feldspar
Quartz
RHA
AP1
50
25
25
0
AP2
50
25
20
5
AP3
50
25
15
10
AP4
50
25
10
15
AP5
50
25
5
20
AP6
50
25
0
25
Results & Discussion
X-Ray Fluorescence (XRF) analysis is proficient in analyzing chemical compound inside the RHA, clay, feldspar and quartz.
However, mould pressure is not the only factor which responsibles for densification, sintering temperature plays an important role in glassy formation and densification of the individual grains during the vitrification process.
However, mould pressure is not the only factor which responsibles for densification, sintering temperature plays an important role in glassy formation and densification of the individual grains during the vitrification process.