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Microstructure and mechanical properties of Al-Mg-Mn-Zr-Er weld joints filled with Al-Mg-Mn-Zr and Al-Mg-Mn-Zr-Er weld wires韦小园,黄晖,陈子勇,王为,李聪颖,聂祚仁College of Materials Science and Engineering, Beijing... properties of Al-Mg-Mn-Zr-Er alloy weld joints filled with Φ1.6 mm Al-Mg-Mn-Zr and Al-Mg-Mn-Zr-Er welding wires were studied by optical microscopy, scanning electron microscopy, transmission electron......
Finite element analysis of deformation characteristics in cold helical rolling of bearing steel-ballsCAO Qiang(曹强)1, 2, HUA Lin(华林)2, 3, QIAN Dong-sheng(钱东升)1, 2(1. School of Materials Science... analytical method, it is significant to develop a 3D finite element (FE) model of HR process. The key forming conditions of cold HR of bearing steel-balls were detailedly described. Then, by taking steel-ball......
Cold extrusion deformation behavior of medium carbon steel after quenching and tempering HU Cheng-liang(胡成亮)1, ZHAO Zhen(赵 震)1, YIN Guan-ren(尹冠人)1, YUAN Zhao-feng(袁兆峰)2, XU Xiang...; Abstract: By taking 40Cr as a specific object, cold extrusion deformation behavior of medium carbon steel after quenching and tempering was studied by experimental works. The influence......
, China) Abstract: A 3D transient cold metal transfer (CMT) welding model was developed to study the heat and mass transfer during CMT welding of aluminum alloy and galvanized steel sheets, which includes arc generation and evolution, up-and-down movement of welding wire, droplet formation and dipping into the weld pool, weld pool dynamics, zinc evaporation and zinc vapor diffusion in the arc......
Compound control for speed and tension multivariable coupling system of reversible cold strip millFANG Yi-ming(方一鸣)1, 2, LIU Le(刘乐)1, LI Jian-xiong(李建雄)1, CHANG Ru(常茹)1(1. Key Laboratory... and Technology of Cold Strip Rolling(Yanshan University), Qinhuangdao 066004, China)Abstract:To weaken the nonlinear coupling influence among the variables in the speed and tension system of reversible cold strip......
Image processing of weld pool and keyhole in Nd:YAG laser welding of stainless steel based on visual sensing GAO Jin-qiang1, QIN Guo-liang1, YANG Jia-lin2, HE Jian-guo2, ZHANG Tao1, WU Chuan-song1... quality control because there are many influencing factors in laser welding process. The key to realize welding quality control is to obtain the quality information. Abundant weld quality information......
Cold Resistant Properties of High Modulus Polyurethane章于川Key Laboratory of Enviroment-friendly Polymer materials of Anhui Province, School of Chemistry and Chemical Engineering, Anhui University摘 要... and cold resistant properties of PU were systematically investigated by FTIR, XRD, DMTA,universal testing machine and flex ductility machine. The results show that Tg of soft segment is the main factor......
J. Cent. South Univ. (2021) 28: 48-57 DOI: https://doi.org/10.1007/s11771-021-4585-1 Production of titanium powder by metallothermic reduction of TiO2 in cold pressed pellets ZHENG Hai-yan(郑海燕)1, 2... titanium (Ti) with high productivity, fundamental studies on producing metallic Ti from titanium dioxide (TiO2) in the cold pressed pellets were conducted by metallothermic reduction with an indirect......
on welding chamber and steady extrusion force 图15 内加强筋部位的焊缝组织 Fig. 15 Microstructures of seam weld on internal stiffener 4 结论 1) 基于材料流速均方差和焊合压力评价揭示型材挤压内加强筋壁厚减薄和开裂的产生机理.原设 计的分流模挤压出模口型材横... Metallurgical Reviews, 1972, 17(1): 1-24. [24] WANG S Q, YUAN L H, LIANG S. Effects of the friction coefficient on cold extrusion process of axial symmetry parts[J]. Machine Tool & Hydraulics......
EFFECT OF CARBON MIGRATION ON CREEP PROPERTIES OF Cr5Mo DISSIMILAR WELDED JOINTS WITH Ni-BASED AND AUSTENITIC WELD METAL J.M.Gong1,S.T.Tu1,Y.Jiang1 (1.Nanjing University of Technology, Nanjing... with Ni-based (Inconel 182) and Cr23Ni13 (A302) austenitic weld metal was investigated. Carbon migration near the weld metal/ferritic steel interface of Cr5Mo dissimilar welded joints was analyzed by aging......
