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Study on Microstructure of Quenched Martensite in W6Mo5Cr4V2 Steel Yunping Ji, Zongchang Liu and Huiping Ren School of Material and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia, China jiyunpingpp@163.com Keywords: W6Mo5Cr4V2, Cryptocrystalline martensite, Stacking fault, Midrib, Twin crystal Abstract.
Acknowledgements The author would like to thank her collaborators from the innovation team of high added-value steel materials shaping and microstructure control in Inner Mongolia University of Science and Technology.
Morphology and Formation Mechanism of Martensite in Steels with Different Carbon Content [J].Advanced Materials Research, 2011, 201-203: 1612-1618
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The material of the used bridge is maple.
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The effect of residual stresses on the strain evolution during welding of thin-walled tubes Maarten De Strycker1,a, Wim Van Paepegem2,b , Luc Schueremans3,c and Dimitri Debruyne4,d 1MeM2P research group, Catholic University College Ghent, Gebroeders Desmetstraat 1, Ghent, Belgium 2Department of Materials Science and Engineering, Ghent University, St.
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Materials and methods 2.1.
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This was achieved by fine tailoring the shrinkage difference between two materials.
In order to minimize the effect of shrinkage difference, the two materials are actually the same.
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The size of sheet metal is 100×100mm, its thickness is 1mm, and the material is Q235.
The size of sheet metal is 100×100mm, the thickness is 1mm, and the material is Q235.
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P1 is purchasing cost of raw material.
H1 is holding cost of raw material.
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On one hand, the improvement of the parameters of the boiler units requires the water-wall tube materials’ performance to improve [1-2]. 20G, also known as Q245R, mainly used in the manufacture of high-pressure boiler pipe and higher parameters, low temperature super-heater, economizer and water-wall tube, whose medium temperature is equal or low 450℃ [3].
In the boiler unit, some reasons may cause SO42-, Cl- ions leak into the make-up water which causes the deterioration of its quality and accelerates the corrosion of water-wall tube and other materials, including condenser leakage, external chemicals leakage and the leakage of mixed bed and resin decomposition at high temperature [5-7].
[3] Shuhua Xiong: submitted to Journal of Engineering For Thermal Energy & Power (2012)
[4] Yanxiang Liu, Taifang Lou: submitted to Corrosion Science and Protection Technology (2003)
Abd El Rehim: submitted to Materials Chem.Phys. (2000)