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THE ROLE OF NIOBIUM IN NICKEL-BASED SUPERALLOYS AND CHARACTERIZATION OF PM ALLOY EP741NP T. Carneiro1,D. Furrer2,J. Radavich3 (1.Reference Metals Co., Bridgeville, PA 15017, USA;2.Ladish Go., Inc... program on the role of niobium in the Russian powder metallurgy alloy EP741NP are presented. Future research plans on the role of niobium in superalloys are also discussed. Key words:niobium; superalloy......
Static oxidation behaviour of silicide coating on niobium alloy at high temperature XIAO Lai-rong(肖来荣)1, 2, XU Liang-liang(许谅亮)1, 2, YI Dan-qing(易丹青)1, 2, LIU Hui-qun(刘会群)1, 2, CAI Zhi-gang(蔡志刚... coating is parabolic. The diffusion of Si leads to the phase transformation and evolution during the oxidation. Key words: niobium alloy; silicide coating; static oxidation; diffusion; phase......
Formation of carbonitride precipitates in hardfacing alloy with niobium additionKe Yang,Qin Yang,Ye-Feng BaoCollege of Mechanical and Electrical Engineering, Hohai University摘 要:Niobium, as the most effective second-phase forming element, was added in the Fe-Cr13-C-N hard-facing alloy to get carbonitride precipitates. Morphology and composition......
Formation mechanism of titanium and niobium carbides in hardfacing alloyKe Yang,Kè Yang,Ye-Feng Bao,Yong-Feng JiangCollege of Mechanical and Electrical Engineering, Hohai University摘 要:The most effective carbide-forming elements titanium and niobium were added into hardfacing alloy.Formation and composition of carbides in the hardfacing alloy were......
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different Ti contents, and morphology of Nbss changes from the cellular structure to dendrite. Key words: Nb-Ti-C alloy; carbide transformation; niobium solid solution  ... (4%-16%, mole fraction) were fabricated by vacuum non-consumable arc-melting method. The results indicate that the alloys contain niobium solid solution (Nbss), carbides (Nb2C, (Nb, Ti)C) and eutectic......
Trans. Nonferrous Met. Soc. China 24(2014) 2839-2844 Interfacial structure and mechanical properties of hot-roll bonded joints between titanium alloy and stainless steel using niobium interlayer Dong... bonding was carried out in vacuum between titanium alloy and stainless steel using niobium interlayer. The interfacial structure and mechanical properties were analyzed. The results show......
J. Cent. South Univ. Technol. (2011) 18: 73-77 DOI: 10.1007/s11771-011-0661-2 Electrochemical synthesis, characterization and thermal properties of niobium ethoxide CAI Ya-nan(蔡亚楠)1, YANG Sheng...; 2. School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China ? Central South University Press and Springer-Verlag Berlin Heidelberg 2011 Abstract: Niobium(V......
电感耦合等离子体原子发射光谱法测定镍基合金中铌朱莉1(1.上海市宝山钢铁股份有限公司研究院)摘 要:研究了样品溶解方法,铌元素分析线的选择,基体元素和主要共存元素钼,铬,铜,钨,铬,钛对铌测定的影响,并在优化的条件下实现了用电感耦合等离子体原子发射光谱(ICP-AES)法测定镍基合金中铌.结果表明:采用硫酸结合酒石酸溶解样品,根据干扰元素钒和钨的含量不同,择优选用309.418 nm,319.498 nm,316.340 nm谱线作为分析线并结合干扰校正技术可消除镍基合金中共存元素的干扰.使用该法测定了镍基合金......
)02-0501-07 Microstructure and texture of niobium foils fabricated by different rolling methods HUANG Yuanchun1, XIE Cheng2, TANG Jianguo2, DENG Yunlai2 (1. Institute of Light Alloy, Central South University... 410083, China) Abstract: Evolutions of microstructures and textures of niobium foils were studied by OM and ODF techniques, and the niobium foils processed by four different cold-rolling methods prior......