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from as-cast to cast-T4 was as follows: α-Mg solid solution+Mg5(Gd,Y) eutectic compound→α-Mg solid solution+ spheroidized Mg5(Gd, Y) phase→α-Mg supersaturated solid solution+cuboid-shaped compound (Mg2Y3Gd2). And the precipitation sequences of Mg-15Gd-5Y-0.5Zr alloy were observed, according to the hardness response to isothermal ageing at 225-300 °C for 0-128 h. Key words:Mg-Gd-Y-Zr alloys; solution......
Hydro-chemical conversion of galena in FeCl3-KCl solution LONG Huai-zhong(龙怀中)1, CHAI Li-yuan(柴立元)1, LIU Hui(刘 辉)2, QIN Wen-qing(覃文庆)2 1. School of Metallurgical Science...: The behaviours of complexation and dissolution of PbCl2 on the surface of galena were investigated to explore the process of hydro-chemical conversion of galena (PbS) in chloride media. By means of solution......
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is the Bayer process. Seed precipitation is the key stage which has a significant effect on the yield and specification of product[1-3]. Supersaturated sodium aluminate (NaAlO2) solution is obtained... ions, Al(OH)-4. After the removal of the insoluble impurities, the supersaturated solution is cooled to the desired crystallization temperature, and supplied with gibbsite seed particles, so......
Improvement of Strength in 2004 Al Alloy by Enhanced Solution Treatment Chen Kangming1,XU Xiaojing1,Wang Hongyu1,Zhang Jie1,Kim Seocksam2 (1.Advanced Forming Technology Institute of Jiangsu University, Zhenjiang, China;2.Mechanical Engineering Department of Kyungpook National University, Daegu, Korea) 摘要:In present paper, the effect of enhanced solution on mechanical properties and aging......
Effect of Valence Electron Structure on Temper Process and Hardness of the Supersaturated Carburized Layer石巨岩College of Materials Science and Engineering,Taiyuan University of Technology摘 要:By measuring the hardness of carburized layer of a new type supersaturated carburizing steel (35Cr3SiMnMoV) at different temper temperature for 2 h, the relationship......
Industrial Experience with Case Hardening of Stainless Steels by Solution Nitriding Bernd Edenhofer1,Roland Zaugg2,Hans Berns3 (1.IPSEN Industries International GmbH, D-47514 Kleve, Germany;2.H... have been successfully SolNit(R) treated in industry leading to superior properties in respect to hardness/strength and corrosion resistance 关键词:Case hardening; stainless steel; solution nitriding......
Experimental and field study on dissipation coefficient of supersaturated total dissolved gasFENG Jing-jie(冯镜洁), LI Ran(李然), MA Qian(马倩), WANG Le-le(王乐乐) (State Key Laboratory of Hydraulics... in a large range. A one-dimensional (1-D) longitudinal model is optimal for the prediction of supersaturated TDG dissipation over a long distance. The key issue of the model is to determine......
the negligible solid solubility in the nickel–carbon system), thereby forming a supersaturated solid solution of graphite in a nickel matrix.The dissolved graphite occupied interstitial positions along...(62 to 43 nm), lattice strain(0.12% to 0.3%), and lattice parameter(0.3533 to 0.3586 nm), which led to the formation of the supersaturated solid solution, were also evaluated and discussed.关键词:......
surface energy. Thus, we propose a method to precipitate spherical boehmite from a supersaturated sodium aluminate solution by adding gibbsite as seed in a heterogeneous system. In this method, gibbsite...Precipitation of spherical boehmite from concentrated sodium aluminate solution by adding gibbsite as seedGui-hua Liu,Zheng Li,Xiao-bin Li,Tian-gui Qi,Zhi-hong Peng,Qiu-sheng ZhouSchool of Metallurgy......
