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J. Cent. South Univ. (2021) 28: 1665-1678 DOI: https://doi.org/10.1007/s11771-021-4725-7 Hydration phase and pore structure evolution of hardened cement paste at elevated temperature XIANG Yu(向宇)1... resonance (NMR) are employed to investigate the hydration characteristics, pore solution composition and conductivity, resistivity and pore structure during the steam curing process. Experimental......
is much higher than that with fluoride activating flux in CO2 laser welding of 6013 Al alloy. Key words: laser welding; aluminum alloy; activating flux; weld appearance; gas pore 1 Introduction Laser...; accepted 27 October 2011 Abstract: In order to increase the absorption of laser energy and improve the weld appearance in laser welding of Al alloy, 1.8 mm- 6013 Al alloy plate was welded by activating flux......
A NEURAL NETWORK FOR WELD PENETRATION CONTROL IN GAS TUNGSTEN ARC WELDING J.Q. Gao1,C.S. Wu1,Y.H. Zhao1 (1.Institute of Materials Joining, Shandong University, Jinan 250061, China) Abstract:Realizing of weld penetration control in gas tungsten arc welding requires establishment of a model describing the relationship between the front-side geometrical parameters of weld pool and the back-side......
J. Cent. South Univ. Technol. (2009) 16: 0774-0780 DOI: 10.1007/s11771-009-0129-9 Numerical simulation method for weld line development in micro injection molding process XIE Lei(谢 磊)1... simulation method was applied to micro injection molding weld line development investigation. The micro tensile specimen which has the size of 0.1 mm (depth)×0.4 mm (width)×12 mm(length) in test area......
MICROSTRUCTURES AND OXIDATION RESISTANCE OF Fe3Al WELD OVERLAY J.R.Sun1,Y.S.Sun1,X.G.Min1,X.Q.Yu1 (1.Department of Materials Science and Engineering,Southeast University,Nanjing 210096,China) Abstract:Using the Fe3Al electrode through manual arc surfacing (MAS),Fe3Al coatings havebeen deposited on the stainless steel substrate.The microstructures,hardness andoxidation resistance of the weld......
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Numerical and experimental investigations of weld pool geometry in GTA welding of pure aluminumA. H. Faraji1, A. Bahmani2, M. Goodarzi3, S. H. Seyedein3, M. O. Shabani4(1. Young Researchers Club... model was developed to predict the shape of weld pool in stationary GTA welding of commercial pure aluminium, without considering fluid flow in the weld pool. A Gaussian current density and heat input......
Dissolution behavior of Cu in Cu-Ag and Cu-P brazing alloys using weld brazingLI Yi-nan1, 2, WANG Chang-wen1, PENG Zi-long2, YAN Jiu-chun1, LIU Xue-song1(1. State Key Laboratory of Advanced Welding... of base metal Cu in the Cu-Ag and Cu-P brazing alloys using weld brazing was researched. The thickness loss of Cu foil in contact with Cu-P and Cu-Ag alloys at 800-920 °C was measured. And the dissolution......
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Influence of plasma-MIG welding parameters on aluminum weld porosity by orthogonal test BAI Yan(白 岩)1, GAO Hong-ming(高洪明)2, WU Lin(吴 林)2, MA Zhao-hui(马朝晖)1, CAO Neng(曹 能)1 1. Institute... on the aluminum weld porosity. The mixed orthogonal matrix L16(44×23) and analysis of variance (ANOVA) technique were employed to optimize the welding parameters. The experimental results indicate that the effect......
