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constant. The flow behaviors are described by the hyperbolic sine constitutive equation, and the average activation energy calculated is 611 kJ/mol. Key words: titanium alloy; hot compression deformation; flow stress; activation energy Ti-5553(Ti-5Al-5Mo-5V-3Cr-0.5Fe)合金是从俄罗斯合金VT-22发展而来的一种新型亚稳定β钛合金,与Ti-1023合金相比,该合金具有对偏析不太敏感,淬透性好,强度优异和断裂韧性较高等优点,特别适合制造必须承受巨大应力的零部件,例如结构件和起落架,在航空航天......
transforms ωiso; 347-376 ℃, ωiso transforms α+β and β transforms α; 409-648 ℃, β transforms α; 648-831 ℃, α transforms β; over 831 ℃, full β. The activation energy value relating to α→β transformation in Ti55531 alloy is evaluated as 188.04 kJ/mol. Key words: Ti55531 Ti alloy; dilatometry; phase transformation sequence; activation energy Ti55531钛合金(名义成分Ti-5Mo-5Cr-5V-3Al-1Zr)是空中客车公司与俄罗斯在BT22......
hot deformation condition, and the influence of hydrogen on work-hardening rate (S*), strain energy density (U*), and deformation activation energy (Q) was analysed. The results show that the flow... deformation; flow stress; activation energy
......铸态ZA27合金的压蠕变行为
来源： 《中国有色金属学报2003年第5期》——魏晓伟 沈保罗 易勇
by a combination of differential scanning calorimetric (DSC) techniques with Avrami-Johnson-Mehl (AJM) equation and multi-peak separation. The result shows that, the activation energy of GPⅠ(367±1) K, η′ phase (507...; kinetics; activation energy Al-Zn-Mg-Cu系(7×××系)铝合金厚板是航空航天领域广泛使用的承力结构材料,一般采用固溶－淬火－时效热处理得到强化,时效处理是7×××系合金材料制备的最后一道工序[1-5],同时也是必不可少的一道工序.在时效过程中均匀,弥散析出的强化相,使材料的力学性能得到提高.时效析出的过程一般被表述为:SSS(过饱和固溶体)→VRC→GPⅠ和......
for the leaching process is established, and the apparent activation energy is 11.611 kJ/mol. The leaching process of clay mineral could be simulated with a shrinking core model, which indicates... and sulfuric acid concentration. Key words: clay vanadium mineral; leaching kinetics; shrinking core model; activation energy ......
and pyrite. The vanadium oxidation reaction is controlled by diffusion kinetics and the apparent activation energy is 347.00 kJ /mol. As the roasting temperature increases, the leaching rate of vanadium..., the technique has the characteristics of high leaching rate and more environment safety. Key words: vanadium; high-carbon stone coal; fluidized oxidizing roasting; activation energy 我国钒资源主要赋存在石煤中,其储量巨大,占我国......
the apparent activation energy of zincate reaction. The standard electrode potential of all the metal coordinating ions and the order of galvanic couple of different metals in zincate solution were also....
Key words: cast Al-Si alloy; non-cyanide multi-metal zincate; zincate solution; zincate mechanism; apparent activation energy
Activation Energy for Decomposition of Complexes Donor in NTD FZ(H) Silicon李怀祥,陈燕生,刘桂荣,段淑贞摘 要:ＡｃｔｉｖａｔｉｏｎＥｎｅｒｇｙｆｏｒＤｅｃｏｍｐｏｓｉｔｉｏｎｏｆＣｏｍｐｌｅｘｅｓＤｏｎｏｒｉｎＮＴＤＦＺ(Ｈ)ＳｉｌｉｃｏｎＬｉＨｕａｉｘｉａｎｇ；ＣｈｅｎＹａｎｓｈｅｎｇ；ＬｉｕＧｕｉｒｏｎｇａｎｄＤｕａｎＳｈｕｚｈｅｎ(李怀祥)(陈燕生)(...关键词:......Activation Energy for Decomposition of Complexes Donor in NTD FZ(H) Silicon
来源： 《Rare Metals1996年第4期》——李怀祥 陈燕生 刘桂荣 段淑贞
; nanometer powder; sintering; kinetics; activation energy 钼是一种难熔金属,具有强度和硬度高,抗腐蚀,导热导电性能好的特点[1].在钼基体上加入耐高温的Al2O3陶瓷硬质颗粒制得的Al2O3/Mo复合材料,综合了钼基体和Al2O3增强相各自的优点,可作为高温耐磨结构材料使用[2-4].目前,大多数钼基合金产品采用粉末冶金工艺生产,即通过机械压制和后序... of the initial stage of sintering from shrinkage data: Simultaneous determination of activation energy and kinetic model from a single nonisothermal experiment[J]. J Am Ceram Soc, 2002, 85: 763-768. [15] SATO......
