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be incorporated in the fracture simulation of the samples. Due to the axisymmetric characteristic of the spot-weld, all the stress components in 10 mm distance from the nugget center were extracted from 2D... J. Cent. South Univ. (2018) 25: 2567-2577 DOI: https://doi.org/10.1007/s11771-018-3936-z Failure simulation in resistance spot-welded lap-joints using cohesive zone modeling Mohammad Ali Saeimi......
different directions are shown in Fig.9. Due to the existence of cleaned oxidized zone, the pool can be clearly identified from the base metal. However the boundary between pool and solidified weld...-jun, CHEN Shan-ben, LIU Xiao-dong. Visual image sensing system for weld zone of pulsed GTAW [J]. Welding & Joining, 2001(7): 23-26.(in Chinese) [13] CHEN S B, ZHAO D B, WU L. Intelligent......
Electrochemical impedance spectroscopy study on the corrosion of the weld zone of 3Cr steel welded joints in CO2 environmentsLi-ning Xu1,Jin-yang Zhu1,Min-xu Lu1,Lei Zhang1,Wei Chang21. Corrosion... the corrosion resistance and the growth of a corrosion film on the weld zone(WZ). The changes in electrochemical characteristics of the film were obtained through fitting of the EIS data. The results showed......
J. Cent. South Univ. (2016) 23: 1115-1122 DOI: 10.1007/s11771-016-0361-z Side force formation mechanism and change law of TBM center cutter XIA Yi-min(夏毅敏)1, 2, TIAN Yan-chao(田彦朝)1, 2, TAN Qing(谭青)1... South University, Changsha 410083, China Central South University Press and Springer-Verlag Berlin Heidelberg 2016 Abstract: The center cutter of a hard rock tunnel boring machine (TBM) is installed......
was studied. The experimental results show that equiaxial grains were formed at the center of the weld metal while highly deformed grains were observed in the thermomechanically affected zone. The fracture..., the fracture toughness of weld center and thermomechanically affected zone increased. The fractographic observation revealed that the friction welded joints fractured in a ductile mode.关键词:......
in 800MPa grade ultra fine structured steel changed sharply to slow speeds when the cooling time ts/5 is longer than 7s. Key words:ultra fine structured steel; weld; heat affected zone...MICROSTRUCTURE TRANSFORMATION IN THE WELDING HEAT AFFECTED ZONE OF 800MPa GRADE ULTRA FINE STRUCTURED STEEL J.B.Liu1,Z.Q.Liu2,Z.L.Tian3,K.Miao2,L.J.Hu1,Y.T.Wang2 (1.Huazhong University of Science......
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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... of Metallurgy and Materials Engineering, Iran University of Science and Technology,Tehran 16846-13114, Iran;4. Materials and Energy Research Center (MERC), Tehran 131145-1659, Iran)Abstract:A 2-D numerical......
Microstructure Characterization of the Fusion Zone of an Alloy 600-82 Weld JointCheng Ma1,Jinna Mei2,Qunjia Peng1,Ping Deng1,En-Hou Han1,Wei Ke11. Key Laboratory of Nuclear Materials and Safety... of the fusion zone of an Alloy 600-82 weld joint was conducted,with focus on the weld residual strain distribution and the comparison of the microstructure of heat affected zone(HAZ) with that of cold worked......
the base material far away from the fusion line is under balancing compressive RS. The microstructures of the weld were characterized by a narrow heat affected zone and twins. Significant {} tension... to the weld top surface is not significantly different from each other. Fig.2 Relationship between microhardness and distance from weld center line Fig.3 shows the tensile properties of base material......