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Grain Refining of Flange Plate for Welded H Section Steel Made under Asynchronous Rolling Condition戴辉Research Institute of Metallurgical Engineering,University of Science & Technology BeijingTangshan... the ratio of length to width of grain, tensile strength, relationship between the grain size and asynchronous rolling process parameters after annealing can be obtained. The experimental results show......
alloys were prepared at different processing parameters by the reaction of halide salts, and the grain refining response of Al-7Si alloy was investigated with Al-3Ti-B master alloy. The microstructure of master alloy and its grain refining effect on Al-7Si alloy were investigated by means of OM, XRD and SEM. Experimental results show that, the size of Al3Ti particles presented in Al-3Ti-1B master......
RESEARCH ON AS-CAST GRAIN REFINING TECHNOLOGY BY INOCULATING CLEAN STEEL WITH TITANIUM OXIDE M.L.Wang1,P.Zhao1,Y.G.Wang2,G.G.Cheng2,X.E.Yang2,L.Y.Wang2,Y.L.Li2 (1.Central Iron and Steel Research Institute, Beijing 100081, China;2.University of Science and Technology Beijing, Beijing 100083, China) Abstract:Precipitation condition and nucleation of Ti2 O3 during solidification of clean steel......
Toward the development of Mg alloys with simultaneously improved strength and ductility by refining grain size via the deformation processZhi Zhang1,Jing-huai Zhang1,Jun Wang2,Ze-hua Li1,Jin-shu... simultaneously.Refining grain size via the deformation process based on the grain boundary strengthening and the transition of deformation mechanisms is one of the feasible strategies to prepare Mg......
Microstructure and phase forming process of Al-3Ti-0.2C-1RE grain refinerZHAO Hong-liang(赵红亮)1, GUAN Ren-guo(管仁国)2, LI Miao(李苗)1, YUE Jin-sheng(岳金胜)1, GAO Ya(高雅)1(1. College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450002, China;2. School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China)Abstract:An Al-3Ti-0.2C-1RE grain refiner was prepared......
process and the corrosion resistance of NC Ni decreases with refining grain size. The distinct experimental results of NC Ni in corrosion behavior can be reasonably explained by the positive... A/dm2 and pH 5.0. The anode was pure Ni plate and the cathode was a steel sheet (C1008, AISI). The saccharin was added as a grain-refining agent during the deposition. Four Ni samples with different......
industry which can be used to improve the mechanical properties of magnesium alloys. Many grain-refining methods have been developed, including melt superheating, Elfinal process, melt agitation..., YOU B S. Grain refining mechanism in Mg-Al base alloys with carbon addition[J]. Scripta Materialia, 2007, 55: 691-694. [3] MA Yue-qun, CHEN Rong-shi, HAN En-hou. Keys to improving the strength......
technique and melting-casting method. The microstructure of master alloy and its grain-refining effect on AZ31 alloy were investigated by means of OM, XRD, SEM and EDS. Experimental results indicated that the prepared master alloy consisted of α-Al, TiAl3, TiC and Al3Y phases, and exhibited good grain-refining performance of AZ31 alloy. Morphology of α-Mg changed from coarse dendritic to fine equiaxed......
and the melt is agitated for 3-5 min, the grain size becomes smaller, which indicates that the carbon powders have effect on refining the grain. Within 20 min, the grain size decreases with the holding... grain remelted only. It is widely accepted that the aluminum carbide (Al4C3) is the compound largely responsible for AZ91D alloy refining effects[3, 16-17], as the heterogeneous nucleation particle......
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