Effect of Ni on microstructure and mechanical properties of bulk nanocrystalline Fe-Al based alloys prepared by aluminothermic reaction

doi:10.4028/www.scientific.net/MSF.745-746.715

	Effect of Ni on microstructure and mechanical properties of bulk nanocrystalline Fe-Al based alloys prepared by aluminothermic reaction
	La, Peiqing; Wei, Yupeng; Yang, Yang; Wang, Hongding; Bai, Yaping
	2013
会议日期	July 13, 2012 - July 18, 2012
会议地点	Taiyuan, China
关键词	Alumina Aluminum metallography Aluminum oxide Binary alloys Hardness Iron alloys Mechanical properties Nanocrystalline alloys Nanocrystals Nickel Solid solutions Ternary alloys Transmission electron microscopy Yield stress Al-based alloys Aluminothermic reactions Average grain size Coarse-grained Electron probe micro analyzer Matrix phasis Microstructure and mechanical properties Nanocrystallines
卷号	745-746
DOI	10.4028/www.scientific.net/MSF.745-746.715
页码	715-721
英文摘要	Bulk nanocrystalline Fe-Al based alloys with 5, 10 and 15 wt. % Ni were prepared by aluminothermic reaction. The alloys were analyzed by electron probe microanalyzer, X-ray diffraction and transmission electron microscope. Compressive yield strength and hardness of the alloys were tested. The experimental results showed that all of the alloys consisted of Fe-Al-Ni matrix and small amount of Al2O3 sphere. The matrix phases of the alloys with 5 and 10 wt. % Ni had disordered α-Fe solid solution, while the matrix phases of the alloys with 15 wt. % Ni had disordered α-Fe solid solution, NiAl phase and Fe3AlCx phase. Average grain sizes of the matrix phases of the alloys were about 20 nm. The alloys with 5 wt.% Ni had the best plasticity, but the alloys with 15 wt. % Ni had the highest yield strength and hardness. Yield strength of those alloys is higher than that of coarse-grained Fe3Al. © (2013) Trans Tech Publications, Switzerland.
会议录	Materials Science Forum
会议录出版者	Trans Tech Publications Ltd
语种	英语
ISSN号	02555476
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/117567]
专题	材料科学与工程学院
作者单位	State Key Laboratory of New Nonferrous Materials, Lanzhou University of Technology, Lanzhou, 730050, China
推荐引用方式 GB/T 7714	La, Peiqing,Wei, Yupeng,Yang, Yang,et al. Effect of Ni on microstructure and mechanical properties of bulk nanocrystalline Fe-Al based alloys prepared by aluminothermic reaction[C]. 见:. Taiyuan, China. July 13, 2012 - July 18, 2012.