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Phenomena in late period of seeded precipitation of sodium aluminate solution LI Xiao-bin(李小斌), FENG Gang-tao(冯港涛), ZHOU Qiu-sheng(周秋生), PENG Zhi-hong(彭志宏), LIU Gui-hua(刘桂华) School...; Abstract: Aiming at seeded precipitation of aluminate solution with high caustic......
decomposes and precipitation occurs. At the early aging stage of 120 ℃, GP zones form and then grow up gradually with increasing ageing time. η′ phase forms after ageing for 4 h and η phase starts to occur after 24 h aging. Key words: 7055 aluminum alloy; aging; precipitation, microstructure; property ......
Trans. Nonferrous Met. Soc. China 23(2013) 134-139 Nanostructured MnO2 synthesized via methane gas reduction of manganese ore and hydrothermal precipitation methods Davood MORADKHANI1, Mahdieh...), P.O. Box 45195-1445, Zanjan, Iran Received 2 February 2012; accepted 15 August 2012 Abstract: A three-stage methane gas (CH4) reduction of manganese ore, dissolution, and precipitation from solution......
MODELING OF ISOTHERMAL PRECIPITATION KINETICS IN HSLA STEELS AND ITS APPLICATION X.M.Zhao1,Z.Y.Liu1,L.Z.Zhang1,D.Wu1 (1.The State Key Lab. of Rolling and Automation, Northeastern University... and growth, quantitative modeling of isothermal precipitation was developed, which was tested by the stress relaxation method, the calculated precipitation-time-temperature curve is in good agreements......
; 文章编号:1672-7207(2013)06-2223-07 Precipitation behaviors and mechanical properties of Mg-6Gd-Y-0.6Zr alloy ZHANG Xinming1, 2, MU Zongyun1, 2, DENG Yunlai1, 2, TANG Changping1... of Education,Central South University, Changsha 410083, China) Abstract: The effect of 1% Y (mass fraction) addition on the precipitation behaviours and mechanical properties of Mg-6Gd-0.6Zr alloy were......
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distribution of the precipitation phase and reduces the number of precipitation phase on the grain boundaries, and thus shrinks the total volume of precipitation-free zones at grain and sub-grain boundaries. As a result, the tensile properties of 2519A aluminum alloy have been significantly improved. Key words: pre-aging deformation; precipitation hardening; tensile properties; aluminum alloys......
of ZrO2(Y2O3) spherical nanometer powders via coupling route of water-oil emulsion with homogenous precipitation CHANG Ying, LI Xi-bin, MENG Zhen-qiang, ZHAO Fu-an (State Key Laboratory of Powder... homogenous precipitation, in which xylol was used as the oil phase, span-80 as the surfactant, and an aqueous solution containing zirconium as the water phase. The ZrO2 powders and the precursor......
. 关键词:铝酸钠溶液；表面活性剂；强化；晶种分解 中图分类号:TF 821 文献标识码: A Effect of nonionic surfactant on seeded precipitation of sodium aluminate solution PENG Zhi-hong, LIU Yan... on the seeded precipitation rate of sodium aluminate solution, the particle size and morphology of the products were studied. The results show that when the added amount of the nonionic surfactant......
