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2012 Abstract: The isothermal oxidation behavior of NiAl-31Cr-2.9Mo-0.1Hf-0.05Ho directional eutectic alloy was investigated with the help of scanning electron microscopy and X-ray diffraction... at 1000 ℃ or 1050 ℃. Key words: intermetallic compounds; NiAl; high temperature oxidation; directional eutectic alloy 1 Introduction Ordered intermetallics NiAl is a kind of great potential high......
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Effects of electromagnetic vibration on the structure and mechanical properties of AI-6%Si alloy during directional solidification Yunbo ZHONG1,Kang DENG1,Weili REN1,Zhongming REN1,Jianbo YU1... alloy. SEM graphs show that coarse dendrite structure was broken up into a somewhat globular structure, and the morphology of eutectic silicon was changed from flaky to fibrous under electromagnetic......
Directional solidification and physical properties measurements of the zinc-aluminum eutectic alloyS.Engin1,U.Byük2,H.Kaya2,N.Maraslι31. Department of Physics,Institute of Science and Technology...">Zn-5wt% Al eutectic alloy was directionally solidified with different growth rates (5.32-250.0μm/s) at a constant temperature gradient of 8.50 K/mm using a Bridgman-type growth apparatus.The values......
and the cellular structures with L2 phase at the cell boundaries are developed. Key words: copper-lead monotectic alloy; directional solidification; transient morphology; microstructure evolution 1.... At the initial growth stage, the bottom of the sample is just contacted with the liquid melt Ga-In-Sn alloy, the transient temperature gradient is the highest for the whole directional solidification......
Influence of Rare Earths on the Directional Solidification Microstructure of Tin-Lead Eutectic Alloy朱颖,方洪渊,钱乙余摘 要:ＩｎｆｌｕｅｎｃｅｏｆＲａｒｅＥａｒｔｈｓｏｎｔｈｅＤｉｒｅｃｔｉｏｎａｌＳｏｌｉｄｉｆｉｃａｔｉｏｎＭｉｃｒｏｓｔｒｕｃｔｕｒｅｏｆＴｉｎＬｅａｄＥｕｔｅｃｔｉｃＡｌｏｙＺｈｕＹｉｎｇ(朱颖),ＦａｎｇＨｏｎｇｙｕａｎ(方洪渊),ＱｉａｎＹｉｙｕ...关键词:......
Microstructure and properties of β-NiAl and its eutectic alloy with Cr and Mo additions ZHANG Zhi-gang(张志刚), LIU Xian-bin(刘先斌), GONG Sheng-kai(宫声凯), XU Hui-bin(徐惠彬) School of Materials Science... alloying with Mo and Cr additions. Key words: β-nickel aluminide; eutectic alloy; compressive properties; brittleness; ductility; fracture morphology 1 Introduction NiAl intermetallic alloys have......
Microstructure evolution of eutectic Nb–24Ti–15Si–4Cr–2Al–2Hf alloy processed by directional solidificationZhen Li,Sai-Nan Yuan,Li-Na Jia,Bin Kong,Zhen Hong,Hu ZhangSchool of Materials Science and Engineering, Beihang Universtity摘 要:In this work, the near-eutectic Nb–24Ti–15Si–4Cr–2Al–2Hf(at%) alloy was directionally solidified at 1900 ℃ with withdrawal......
Microstructure Development of Directionally Solidified Nb-Ti-Si Based Ultrahigh Temperature Alloy () 摘要:Integrally directional solidification of an Nb-Ti-Si based ultrahigh temperature alloy..., and the cellular solid/liquid interface formed when the withdrawing rate was 5 μm/s. 关键词:integrally directional solidification; Nb-Ti-Si based ultrahigh temperature alloy; directionally solidified......
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