Search results

Tests of welded joints of new generation austenitic, stainless steel HR3C Stanisław Lalik Silesian University of Technology, Material Science Department, Krasińskiego 8, 40-018 Katowice, Poland stanislaw.lalik@polsl.pl Keywords: austenitic steel, welding, mechanical properties, microstructure.
Material for tests Tests were conducted on welded joints of tubes Æ 45x10.6 mm made of HR3C steel (TP310HCbN, SA213).
References [1] Materials company Salzgitter Mannesmann Stainless Tubes, 2014
Zieliński, Austenitic steels for boiler elements in USC power plants, Journal of Achievements in Materials and Manufacturing Engineering 57 (2013) 68-75
Zurek, Basic creep models for a 25Cr20NiNbN austenitic stainless steels, Materials Research and Innovations 17 (2013) 355-359

Basalt fiber is a recently developed high performance material, which is cheaper than carbon and aramid fibers [1].
Materials and Methods The specifications of tyre rubber modified asphalt were needle penetration 55/0.1 mm (25 oC, 100g, 5s), softening point 55.0oC, and ductility 19 cm (5 cm/min, 5 oC).
References [1] J.Q.Liu: Science and Technology Review, No.9, (2009), [2] Y.Chen, L.Wang and Z.W.Li: New Building Materials, No.8, 2000
Mishing, in: Diffusion Processes in Advanced Technological Materials, edtied by D.
Clem: submitted to Journal of Materials Research (2003) [8] P.G.

Introduction Nanostructured materials and their development open new scientific and technological perspective because their physical properties.
The MA parameters were: - 2 grinding bowls by stainless steel; - 50x2 balls by stainless steel; - Milling atmosphere: argon; - Milling time: 5 hours; - Material/balls ratio: 1/10; - Milling type: dry; - Main disk speed 400 rpm (both cases) - Planets speed -800 (for shock mode) and 800 (friction mode) For a better quality of the experiments the samples were notated as presented in table 2.
Belov, “The Structure and Properties of Dispersion-Strengthened Mechanically Alloyed Composite Materials Based on Aluminum Alloys”, MATERIALS FORUM VOLUME 28 - Published 2004
Vahid Karimi, Influence of Nanosized Silicon Carbide on Dimensional Stability of Al/SiC Nanocomposite, Research Letters in Materials Science Volume 2008
Orban, “In-situ production of Al/SiCp composite by laser deposition technology,” Journal of Materials Processing Technology, vol. 89-90, pp. 187–190, 1999

Thermal insulating materials which retard heat transmission can be classified into porous materials and heat-reflecting materials [3].
Notice that the fiber structure formation of porous materials used in this study is irregular.
Liao: accept to Journal of Composite Materials (2010)
Lou: Advanced Materials Research Vol. 97-101 (2010), p. 1801-1804
Li: Advanced Materials Research, Vol. 55-57 (2008), p.405-408.

Experimental The test material was U70, which was a kind of heavy rail steel and the average carbon content was 0.7 %.
For the specimen without ultrasonic peening treatment, there exist some other traces caused by the spalling of the material in block or lamella, besides deeper and wider furrows in the wear surface.
These two factors act together to enhance the wear resistance of the material leading to it can resist micro-cutting caused by the frictional pair effectively.
Acknowledgements Supported by Science Foundation of Education Office of Jiangxi Province (No.2007-182) and Key Laboratory of Ministry of Education for Conveyance and Equipment, East China Jiaotong University.
(In Chinese) [2] Jianhui Deng, Qiyue Liu: Iron Steel Vanadium Titanium Vol. 27 (2006), p. 48 (In Chinese) [3] Chongyan Leng, Xu Zhang: Rare Metal Materials and Engineering Vol. 37 (2008), p. 556 [4] Ning Wu, Huaming Wang: Heat Treatment of Metals Vol. 34 (2009), p. 46 [5] ZHONG Ning, XU Shanqing: Journal of Shanghai Jiaotong University Vol. 40 (2006), p. 1735 [6] Xu L J, Xing J D: Wear Vol. 262 (2006), p. 253 [7] Wei S Z, Zhu J H, Xu L J: Materials Science and Engineering A Vol. 404 (2005), p. 138 Fig. 4 Structural appearance in the longitudinal cross-section of specimens with peening a)10 min b)20 min c)40 min d)60 min a) b) c) d)

Material.
Table 1 Material parameter between before with after Parameter Material Stress（MPa） Deformation（10-003） Displacement（mm） alloy constructional steel 292 1.01 3.28 45# 292 0.99 3.28 Table 1 indicates an invisible change emerges after the material is altered.
Acknowledgements In this paper, the research is supported by The National Youth Science Fund Project(61301040); Tianjin science and technology planning project (13ZCZDGX01500) and (14ZCZDSF00022).
Packing Methods for UAV Recovery Parachute [N], Journal of Nanjing University of Aeronautics &Astronautics,2009,(41)79-83
Applied Mechanics and Materials, Vols. 488 (2014):1087-1090

Effect of welding parameters on temperature field during twin-wire submerged arc welding of X80 pipeline steel Chunyan Yan1, a, Xin Zhao1, a, Songya Tian1, a, Shengxun Xu1, a, Baiqing Ma2,b and Haiyang Jiang 3,c 1College of Mechanical and Electrical Engineering, Hohai University, Changzhou 213022, China 2School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China 3 Harbin Boiler Company Limited, Harbin 150046, China ayancy_hhuc@126.com, bmabaiqingdlj@163.com, cocean_apart2007@163.com Keywords: X80 pipeline steel; twin-wire submerged arc welding; numerical simulation; welding parameters Abstract.
The test material used in this study was X80 pipeline steel.
The reason is associated with the local heating of the welding arc and the nonlinear variation of the material’s thermal properties with temperature.
Acknowledgements This work was financially supported by the Natural Science Foundation of Jiangsu Province (BK2011258) and Fundamental Research Funds for the Central Universities (2010B22414).
Journal of Materials Processing Technology, 2012: 2041-2050

Ahmad3 1Center of Excellence Geopolymer and Green Technology (CEGeoGTech), School of Materials Engineering, Universiti Malaysia Perlis (UniMAP), P.O.
Vítu: Applied Surface Science 256 (2010) p. 2956–2960
Stephen: Materials Chemistry and Physics 99 (2006) p. 117–126
Turkiewicz: Applied Surface Science 254 (2008) p. 7410–7416
Ahmad: Journal of Scientific & Industrial Research Vol. 69 (2010) p.830-834.

Introduction Reinforced concrete beams are the most widely used in construction of road bridges and overpasses in view of its attractive properties such as good structural performance, economical efficiency, durability, availability of materials and pleasant appearance.
The main components of structure health monitoring is to use sensors, which can in real time indicate about the changes in properties of the material of structure, dynamic or geometric properties of a structural system.
Maalej, Effect of Cracking, Corrosion and Repair on the Frequency Response of RC Beams, Construction and Building Materials. 5 (2010) 719-731
Ovigne, Natural frequency evaluation of a cracked RC beam with or without composite strengthening for a damage assessment, Materials and Structures. 10 (2005) 865–873
[5] R.Capozucca, E.Magagnini, Analysis of cracked RC beams under vibration, Journal of Physics, Conf.

For this kind of elastic model, the current state of the stress only dependents on the current state of the deformation, the math Cauchy elastic material constitutive relation can be written as: (1) (2) The stress - strain formula of the Green form When there is material strain energy, the elastic material constitutive relation of HLA is: (3) The incremental stress - strain formula of differential form The minimum requirements to make a kind of material to be of the elastic stress are a one-to-one relationship between tensor and strain increment.
For an ideal plastic material, when the stress reaches the yield stress of, there is no need to add any load, deformation is free to increase, and it can be expressed as: c.
For isotropic materials, the yield criterion under the combined stress state can be expressed as: (1) Tresca yield criterion (2) Von Mises yield criterion The core idea of HLA is interoperability and reuse, which solves the simulation system's flexibility and scalability problem, reduce the network redundancy data.
[2] Hong guang, Study on the design of autonomous flight without full simulation based on Simulink [J], Journal of Shenyang Agricultural University, 2003, (4)
[3] Zhang wanmao, Application of engineering economics in engineering project bid, Science and Technology Innovation Herald, 2008