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Online since: July 2006
Authors: A.L. Berezina, U. Schmidt, A.V. Kotko, O.O Segida, V.K. Nosenko
The Effect of Aging Processes on the Structure and Properties of
Rapidly Solidified Al-Sc, Al-Zr and Al-Hf Alloys
Berezina A.L.1, a , Segida O.O.1,b , Nosenko V.K.1,c , Schmidt U.2,c , Kotko A.V.1,d
1
Institute for Metal Physics, 36 Vernadsky Blvd., Kyiv 03680, Ukraine
2
Department of Physics, Martine-Lutter-University, Hohen Weg 7, Halle, Germany
a
beres@imp.kiev.ua, bsegida@imp.kiev.ua
Keywords: The «fan» structure, the «vortex» structure, the anomalous supersaturation of the solid
solution, the rapid quenching, aluminum alloys
Abstract.
The physical properties of melts of these alloys were studied [1-4].
Ribbons were prepared by the melt-spinning onto Table 1.
Parameters of the phase transformations in ribbons № ΔTp, oС Tp m , oС S, x 100 2 3 5 7 10 12 300 - 551 300 - 548 159 - 520 225 - 514 120 - 515 218 - 519 452 479 399 362 380 398 29.0 24.3 21.6 43.2 32.4 7.4 fractal structures have been observed: the «vortex» structure crossing several grains (fig.1 a) and the «fan» structure covering a grain (fig.1 b, e).
Conclusions 1.
The physical properties of melts of these alloys were studied [1-4].
Ribbons were prepared by the melt-spinning onto Table 1.
Parameters of the phase transformations in ribbons № ΔTp, oС Tp m , oС S, x 100 2 3 5 7 10 12 300 - 551 300 - 548 159 - 520 225 - 514 120 - 515 218 - 519 452 479 399 362 380 398 29.0 24.3 21.6 43.2 32.4 7.4 fractal structures have been observed: the «vortex» structure crossing several grains (fig.1 a) and the «fan» structure covering a grain (fig.1 b, e).
Conclusions 1.
Online since: January 2012
Authors: Xiao Fei Wang, Xi Zhang, Yue Bing Chen, Lei Zhang, Chao Jing Tang
LB={lB|ln,mbn,m, n=1,…,N, m=1,…,M} is the incidence function denoting the availability and reward of the spectrum, and is determined by spectrum band availability L and spectrum band reward B.
Definition 1 W is spectrum assignment feasible region of problem Eq. 1, if and only if:
The operating procedure of the PCSO is shown in Algorithm 1.
References [1] S.
Cheng, Heuristic algorithms for dynamic spectrum assignment in open spectrum system, Journal of Software, 19 (2008) 479-491
Definition 1 W is spectrum assignment feasible region of problem Eq. 1, if and only if:
The operating procedure of the PCSO is shown in Algorithm 1.
References [1] S.
Cheng, Heuristic algorithms for dynamic spectrum assignment in open spectrum system, Journal of Software, 19 (2008) 479-491
Online since: May 2021
Authors: Laxman B. Abhang, M. Hameedullah
Composition of work material is shown in Table 1.
Fig.1.
(Rt is the peak to peak amplitude) Table 1.
For taking data among the 0 and 1 to fuzzy sets [4, 5, 6, 7].
Karpat Y.Predictive modeling of surface roughness and tool wear inhard turning usingregression and neural networks, International Journal of Ma – chinetools and Manufacture2005; (45)467-479
Fig.1.
(Rt is the peak to peak amplitude) Table 1.
For taking data among the 0 and 1 to fuzzy sets [4, 5, 6, 7].
Karpat Y.Predictive modeling of surface roughness and tool wear inhard turning usingregression and neural networks, International Journal of Ma – chinetools and Manufacture2005; (45)467-479
Online since: June 2012
Authors: Archana Tiwari, Roopesh Jain, Anushri Saxena, Alejandro Manzano Ramirez
Composition of optimised stock solution for biofilm production is indexed in Index 1 (Table 1).
Stock Solution(ml) Concentration(ml) 1.
Stock C 1 4.
Stock E 1 B Fig.1.
Biofouling. 26(4): 479–486 [2] Anderson AJ, and Dawes EA. (1990).
Stock Solution(ml) Concentration(ml) 1.
Stock C 1 4.
Stock E 1 B Fig.1.
Biofouling. 26(4): 479–486 [2] Anderson AJ, and Dawes EA. (1990).
Online since: July 2014
Authors: Jian Hua Zhang, Hai Nan Li
Firstly, divide the interval [0,1] into equal segments.
The time interval is set as 1 hour.
The initial value of the optimal multiplier is 1.
Automation of Electric Power Systems, 2008, 32(1): 16-21(in Chinese)
IEEE Trans on Power Systems, 1997, 12 (1): 471-479.
The time interval is set as 1 hour.
The initial value of the optimal multiplier is 1.
Automation of Electric Power Systems, 2008, 32(1): 16-21(in Chinese)
IEEE Trans on Power Systems, 1997, 12 (1): 471-479.
Online since: October 2011
Authors: Xanthippi Chatzistavrou, Ourania Menti Goudouri, Eleana Kontonasaki, Konstantinos M. Paraskevopoulos, Petros Koidis, Lambrini Papadopoulou, Anna Theocharidou, Eleni Theodosoglou
In the case of aker3, the spectrum presented one broad peak at the range 800-1150cm-1 attributed to the amorphous silicate glass.
The presence of the weak peaks at 1020, 935, 890 and 520cm-1 confirmed the presence of merwinite as the main crystalline phase [16], while the shoulder at about 700 and the weak peak at 850cm-1 can be attributed to akermanite [17].
Table. 1.Transmitted vibrational frequencies of the ceramics stabilized at 1300, 1400 and 1450°C aker3 aker4 aker5 (1300oC) (1400oC) (1450oC) v (cm-1) v (cm-1) v (cm-1) M 1010 (s) M 1010 M 1010 - A 975 A 975 M 930 A 930 A 930 A 905 M 890 M 890 A 850 A 850 A 850 A 685 (s) A 685 A 685 A 635 A 635 M 585 (s) M 585 M 585 M 520 A 475 A 475 M = Merwinite, A = Akermanite In the case of the FTIR spectra, the sharpening of the peak at 1050cm-1 attributed to the P-O stretching vibration is observed after 12h of immersion in SBF solution.
References [1] P.F.
Med. 10 (1999) 475-479
The presence of the weak peaks at 1020, 935, 890 and 520cm-1 confirmed the presence of merwinite as the main crystalline phase [16], while the shoulder at about 700 and the weak peak at 850cm-1 can be attributed to akermanite [17].
Table. 1.Transmitted vibrational frequencies of the ceramics stabilized at 1300, 1400 and 1450°C aker3 aker4 aker5 (1300oC) (1400oC) (1450oC) v (cm-1) v (cm-1) v (cm-1) M 1010 (s) M 1010 M 1010 - A 975 A 975 M 930 A 930 A 930 A 905 M 890 M 890 A 850 A 850 A 850 A 685 (s) A 685 A 685 A 635 A 635 M 585 (s) M 585 M 585 M 520 A 475 A 475 M = Merwinite, A = Akermanite In the case of the FTIR spectra, the sharpening of the peak at 1050cm-1 attributed to the P-O stretching vibration is observed after 12h of immersion in SBF solution.
References [1] P.F.
Med. 10 (1999) 475-479
Online since: December 2014
Authors: Feng Qian
The energy loss of heating residential building in north China is shown in Table 1.
So it is recommended that it should be mixed with other thermal insulation system. 4.1.1 Advantage (1) The most outstanding merit of self-insulation wall system is its combination of retaining performance and thermal insulation, so the additional heat insulation material is not needed.
Fig.1 Vitrified microsphere polymer exterior wall insulation system Fig.2 XPS extruded polystyrene board thin plastering type external wall thermal insulation system 4.2.1 Advantage (1) The heat preservation material is convenient and low cost.
Reference [1]Perez-Lombard, Luis, Jose Ortiz, and Christine Pout.
Applied Thermal Engineering 23.4 (2003): 473-479
So it is recommended that it should be mixed with other thermal insulation system. 4.1.1 Advantage (1) The most outstanding merit of self-insulation wall system is its combination of retaining performance and thermal insulation, so the additional heat insulation material is not needed.
Fig.1 Vitrified microsphere polymer exterior wall insulation system Fig.2 XPS extruded polystyrene board thin plastering type external wall thermal insulation system 4.2.1 Advantage (1) The heat preservation material is convenient and low cost.
Reference [1]Perez-Lombard, Luis, Jose Ortiz, and Christine Pout.
Applied Thermal Engineering 23.4 (2003): 473-479