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Online since: September 2007
Authors: Mario Guagliano
In [4] the effect of shot peening on a low-alloy steel is analysed and the synergetic effect of the very hard layer due to nitriding and of the residual stress field induced by shot peening evidenced.
In [5] the effect of shot peening on contact fatigue behaviour of 40Cr steel after a compound heat treatment that includes nitriding is analysed and the different failure modes under different pressure values are underlined.
In [7] the fatigue strength of a shot-peened nitrided low-alloy steel is investigated and the choice of the peening parameters is optimised by means of design of experiments.
A correspondence of this result with the one that derives from the application of the Murakami formula looked for, being the aim to assess if this latter is able to correctly describe the threshold behaviour of the nitrided and shot peened material.
[10] Y Murakami: Metal Fatigue: Effects of Small Defects and Nonmetallic Inclusions (Elsevier 2002) [11] Murakami, Y.; Endo, M.: International Journal of Fatigue, Vol. 16 (1994), p. 163.
Online since: September 2013
Authors: Mohd Shahneel Saharudin, Aidah Jumahat, Amir Z.A. Kahar, Shaharudin Ahmad
Introduction In recent years, composite materials have been widely used to replace, with advantage, not only steel but even light alloys in the construction of various components and structures such as wind turbine blades, aircraft, automobile, sporting goods, civil and marine structures [1-5].
Glass fibers are used to reinforce plastic matrices to form structural composites and molding compounds [8].
This research is aimed to investigate the impact properties of short glass fibre reinforced epoxy polymer composites.
Vadori, Low velocity impact tests of laminate glass-fiber-epoxy matrix composite material plates, International Journal of Impact Engineering 27 (2002) 213-229
Online since: November 2022
Authors: Nadra Harchaoui, Hong Xu, Jean François Wax
Binary alloys.
We turn now to the case of binary K-Cs and Na-K alloys.
Nevertheless, results of Na-K and K-Cs alloys superimpose between 300 and 800 K.
Wax, Applicability conditions of the Stokes formula, AIMS Materials Science, 8(5) (2021) 809–822
Wax, Viscosity of liquid Na-K alloys from molecular dynamics simulations, J.
Online since: April 2014
Authors: Vladimir G. Shavrov, Irina S. Tereshina, Alexander P. Kamantsev, Victor V. Koledov
The temperature span of this effect is limited to only few degrees and the largest MCE is observed near a phase transition (PT); for example, this will be about 2 K/T for gadolinium near Curie point temperature [2] and 3.3 K/T for a FeRh alloy near its 1st order PT [3].
The entropy change of different magnetic compounds is studied in large number of works [4].
If we assume that τ has the same values for the intermetallic compound Fe49Rh51 with giant reverse MCE, then taking ΔS = 11.8 mJ/(g´K) at T = 297 K in a field of H = 20 kOe [3] we get: P = ΔS ∙ T ∙ f = 11.8 mJ/(g∙K) ´ 297 K ´ 11 Hz ≈ 38.5 W/g.
Tishin, Journal of Magnetism and Magnetic Materials 321, (2009) L1
Poredošet, Strojniški vestnik - Journal of Mechanical Engineering 58, (2012) 16
Online since: January 2013
Authors: Yi Luo
They belong to medium carbon low-alloy steel, and their representative steel are 3Cr2Mo and 3Cr2MnNiMo which are developed according to AISI P20 and AISI P20+Ni, respectively.
On the basis of 3Cr2Mo steel, a series of derivative steels have been independently developed, such as 3Cr2MoB, 3Cr2MoS, 3Cr2MoBS, 3Cr2MoSRE and 3Cr2MoBSCa, some of them are shown in Table 1 [4-6]. 0.001% ~ 0.003% B added into the 3Cr2Mo steel aims to increase the hardenability. about 0.1% S added into the 3Cr2Mo steel is to form MnS inclusions to destroy the continuity of the matrix and achieve high easy-cutting performance. 0.002% ~ 0.01% Ca Added into the 3Cr2Mo steel is to form S-Ca compound as the easy-cutting element.
Particularly they used the computer to simulate quenching process, and modified the traditional prehardened process into the air→water compound quenching process, which made 3Cr2Mo and 3Cr2MnNiMo mould steel blocks totally harden, and also reduced the possibility of the deformation and cracking [11,12].
Since 1992, Xiaochun Wu has researched and designed non-quenched prehardened plastic mould steel through study the alloying mechanism, microstructure control, processing properties, and invented the FT series of non-quenched prehardened plastic mould steel.
[21] Yi Luo, Xiaochun Wu, Hongbin Wang, et al., Journal of Material Processing Technology, 2009, 209: 5437-5442
Online since: February 2012
Authors: Qing Wu
Aiming to guarantee the completeness of design for exception handling logic in service- oriented software, this paper proposed a formal description method which and the corresponding integrated verification method for exception handling logic.
B-based modeling and verification methods include: Newcastle University, UK Alexander Romanovsky [4] using the B method and the Alloy language, coordinated atomic actions based on the design of concurrent systems and action between the structure of abnormal flow-related information of the Statute.Brazil Campinas State University Patrick HS Brito [5] is not feasible to existing software elements into a perfect fault tolerance package architecture elements iFTE.
[2], Wan-cun Du, Xiao-peng Xi, Exception Handling Oriented Workflow Modeling and Its Performance, chinese journal of computers, 2003, Vol.26 No.9, pp 1094-1103 [3].
Gui-sheng Fan,Hui-qun Yu, Fault Diagnosis and Handling for Service Composition Based on Petri Nets, journal of software, 2010, Vol.21 No.2, pp231-247 [4].
Romanovsky, et al, Improving reliability of cooperative concurrent systems with exception flow analysis, Journal of Systems and Software, 2009, Vol.82 No.5, pp 874-890
Online since: May 2013
Authors: Noor Bahyah Ibrahim, Ftema W. Aldbea, Mustafa Hj. Abdullah
This paper aimed to substitute high content of Tb (x=1.5) into YIG to achieve Tb1.5Y1.5Fe5O12 nanoparticls garnet films despite an ionic radius of Tb3+ (1.043Å)[16] is larger than that for Y3+( 0.829Å)[17] A sol-gel was employed to prepare the films due to its capability in producing homogenous films in nano range despite its low cost and cheap apparatus[15].
The film was heated at 90°C for 2 hours to get rid of residual solvent, and then followed by 350˚C for 15min at heating rate of 3° C/min to burn-off the organic compounds.
Oqasawara, Terbium- yttrium – iron garnet revisited, Journal of Alloy and Compounds. 436 (2007) 415-420
Shi, Fabrication and magnetic properties of Ce1Y2Fe5O12 thin films on GGG and SiO2/Si substrats, Journal of Magn.
Lianxiang, Magnetic properties of Bi-doped Y3Fe5O12 nanoparticles, Journal of Current Applied Physics. 8 (2008) 1-5
Online since: April 2014
Authors: Pat Sooksaen, Malin Rapp, Kanokporn Potharin
This study aimed to increase specific surface area, aspect ratio and reduce band gap energy of ZnO by aluminium doping.
Sadrnezhaad, Nanostructure sword-like ZnO wires: Rapid synthesis and characterization through a microwave-assisted route, Journal of Alloys and Compounds, (2009), 469, 293–297 [4] T.
Online since: February 2013
Authors: V. Tebaldo, G. Martra, F. Cartasegna, Giovanna Maria Gautier di Confiengo, M. Faga
During the process, evaporated metals and metal alloys enter the plasma state to combine with the ionised process gas (nitrogen) and eventually condense on the substrate surface, as part of ceramic compounds.
Ten measurements per each sample were obtained with the aim to have a representative average value.
Journal of Vacuum Science and Technology 17: (1999) 2401–2420
Online since: September 2013
Authors: Masayuki Toda, Masaru Umeda, Masruroh Masruroh
For ferroelectric materials, perovskite compounds such as lead zirconate titanate (PZT) are widely used.
Au [9] and Ag alloys [10] have been used as top electrodes on PZT thin films for ferroelectric capacitors via PLD and dc sputtering, respectively.
Hence, the aim of the present study was to deposit various metal electrodes such as Au, Al, Ag and Cu on PZT films and to use the resulting materials as top electrodes.
Phys. 104, (2008) p. 114101-1 [13] Masruroh, Masaru Umeda, and Masayuki Toda: International Journal of Applied Physics and Mathematics, Vol. 2, No. 6, November (2012) p. 454-457
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