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Role of Friction Stir Channel Geometry on the Fatigue Behaviour of AA5083-H111 at 120°C and 200°C Catarina Vidal1, a and Virgínia Infante2,b * 1, 2ICEMS – Institute of Materials and Surfaces Science and Engineering, Instituto Superior Técnico, Technical University of Lisbon, Av.
Material and Methods In this study, 15mm thick rolled plates of 5083H111 aluminium alloy were used.
[2] Balasubramanian, N. et al., Friction stir channeling: Characterization of the channels, Journal of Materials Processing Technology, 209, 2009, pp 36963704
[4] Vidal, Catarina, Infante, Virgínia, Vilaça, Pedro, Mechanical Characterization of Friction Stir Channels under Internal Pressure and In-Plane Bending, Key Engineering Materials, Vols. 488489 (2012), pp105-108
[5] Vidal, Catarina, Infante, Virgínia, Vilaça, Pedro, Metallographic Characterization of Friction Stir Channels, Materials Science Forum, Vols. 730732 (2013), pp 817822.

Few researches on the interaction of given materials with laser technology parameters in the case of LST have been done, however, little information on laser technological conditions can be found in fabricating of functional surfaces with special microstructures.
Materials and methods Cast iron has gained most application for good tribological performances [12,13,14], namely, low friction coefficient; good wear resistance and antivibration, it can be matched soundly with other materials, and also be used widely in engineering.
Abbott curve is recognized to be an import and complicated factor for valuing the abrasion resistance of tribological materials.
Case: Materials Science and Engineering Vol. 97 (2003), pp.94-105
Jain: Journal of Tribology Vol.129 (2007), pp. 595–602

They are measured in building materials including interior wall paints, which are indoor sources of volatile organic compounds [1,2].
A satisfactory level of degradation was achieved using these fibre-supported C-doped TiO2 materials.
The characterisation of the materials showed that fibrous PAN formed distinct C-doped TiO2 nodes on the fibre surface, conducing to additional photoactivation of C doping.
Ni, Preparation and characterization of Pd-TiO2 photocatalytic materials supported by carbon fibers, Rare Metal Materials & Engineering 39 (2010) 1075-1078
Hu, Adsorptive capacity study of mesoporous carbon-doped TiO2 and its application in Cu(II) removal from water, Materials Science Forum 1058 (2022) 39-44

Namely, the higher of material's yield strength, the lower of the fracture toughness, scilicet, the higher of material's yield strength, the weaker of the resistance of crack propagation.
In other words, with increasing of material's yield strength, the fracture toughness will decrease, and then I sK σ decreases, so the material's ability to resist crack propagation reduces.
For engineering materials, it's necessary to elevate the fracture toughness while improving the strength via optimize forming processing parameters.
References [1] D.W.Zhao, X.H.Liu and G.D.Wang: Journal of Northeastern University (Natural Science) Vol.23 (2002), p. 976.
[3] D.W.Zhao, W.Deng, X.M.Qin and X.H.Liu: Materials Science and Technology (2009), (in press).

Zhang1,e 1Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China 2Department of Applied Physics,University of Groningen, Nijenborgh 4, 9747 AG Groningen, the Netherlands ahuajie.yang@rug.nl, bxhshao@imr.ac.cn, cshxli@imr.ac.cn, dshdwu@irm.ac.cn, ezhfzhang@imr.ac.cn Keywords: Mg alloy; ECAP; Microstructure; EBSD.
Introduction Magnesium alloys are attractive engineering materials for use in a wide range of aerospace, automotive and other applications because of their low density and high specific strength [1-2].
Mg-Li based alloys are the lightest among the magnesium alloys and serve as the crucial structural materials for aerospace industry[3-4].
Meyers, Journal of Materials Research, 24 (2009) 2617-2627
Liu, Advanced Engineering Materials, 10 (2008) 955-960

Material The materials used in this experiment were Ordinary Portland cement (OPC), sand, natural aggregate (NA) with maximum size 20 mm, superplasticizer, RA and POFA.
These materials were used partially as additives in concrete mix.
Gambhir, Concrete Technology, Tata McGraw-Hill. (1986) [2] Silva et al., Properties and Composition of Recycled Aggregates from Construction and Demolition Waste Suitable for Concrete Production, Construction and Building Materials, 65 (2014) pp. 201-217
Tam, Assessment of Durability of Recycled Aggregate Concrete Produced byTwo-Stage Mixing Approach, Journal Material Science , (2007) pp. 3592-3602
Construction and Building Materials, 23 (2009) pp. 2641-2646

Army aviation material inventory exist is to meet the required of aircraft maintenance and aviation materials, because the plane is random occurrence of failure, so the demand for aviation materials is unpredictable, aircraft materials inventory is a result of frustration, but the Air Materiel excess inventory is harmful.
From the research point of view to protect aviation material for aircraft materials to protect specific areas, aircraft materials to protect the theory and technology, aviation materials and other aspects of business processes to protect basic research more fully, but the business processes of research is relatively small.
Analysis and evaluation aircraft equipment supply support from whole process and the perspective of the whole process will help the optimization of aircraft materials protect, so as to enhance the efficiency of aircraft materials protection.
Journal of CAAC Institute, 2003, 10(21):66-70, in chinese
Computer Science, 2006, 33(11):102-105, in chinese

Glass-ceramic phosphors are well-known and promising as solid electrolytes, laser, luminescent and other inorganic materials.
Lanthanide-doped phosphors are paid particularly much more attention, since their merit of a large Stokes shift, a long life time, sharp fluorescence in comparison with traditional materials.
In particular, molybdates doped with lanthanides include a large class of inorganic functional materials that demonstrate wide physical properties.
The starting materials for molybdates are reagents Na2CO3 (AR grade), MgO (AR grade), Sc2O3 (99.99%), and MoO3 (AR grade).
Buddhudu, Spectral analysis of Eu3+ and Tb3+:B2O3–ZnO–PbO glasses, Materials Chemistry and Physics 102 (2007) 181-186

[7] Xing K X, “The research on some key technologies of hand rehabilitation robot system”, 2010 Doctoral Dissertation, Huazhong University of Science and Technology.2010
[14] Yang H C, Wang J, Wang D M, “Characteristics of surface electromyography single change based on isokinetic muscle fatigue”, China Sport Science, Vol. 25, No. 7,2005, pp. 16-20
[15] Zhang H H, Wang J, Yang H C, “Surface electromyographic dynamics during biceps brachii eccentric and concentric contractions”, Journal of Zhejiang University(Engineering Science), Vol. 40, No. 11, 2006, pp. 1937-41
[16] Merletti R, Conte L R, Orizio C, “Indices of muscle fatigue”, Journal of Electromyography and Kinesiology, Vol. 1, No. 1, 1991, pp. 20-33
[17] Farina D, Merletti R, “Comparison of algorithms for estimation of EMG variables during voluntary isometric contractions”, Journal of Electromyography and Kinesiology, Vol. 10, No. 5, 2000, pp. 337-49

Data dictionary collect relevant material from the Internet in a data warehouse in advance, the runtime in the similarity comparison algorithm extracted directly from the data warehouse for matching.
This work was funded in part by the state ministry of science and technology innovation fund under China Meterological Administration granted [2013]NO 069.
Based on scene perception of temporal sequence mobile access patterns mining research [J]; Journal of Beijing institute of technology university; 10, 2008.
Data warehouse in bank customer relationship management (CRM) application [J]; Journal of Dalian maritime university; S1 (2007).
Apriority algorithm in the consumer market price analysis research and application [J]; Journal of Beijing administration for industry and commerce university (natural science edition); 03, 2009.