Effect of Mo Addition on Microstructural Characteristics in a Re-containing Single Crystal Superalloy

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	Effect of Mo Addition on Microstructural Characteristics in a Re-containing Single Crystal Superalloy
	X. G.; Wang Liu, L.; Lou, L. H.; Zhang, J.
	2015
发表期刊	Journal of Materials Science & Technology
ISSN	1005-0302
卷号	31 期号:2 页码:143-147
摘要	The effect of Mo addition on microstructural characteristics of a nickel-base single crystal superalloy containing 4 wt% Re was investigated. The gamma/gamma' partitioning ratios determined by energy dispersive spectrometer attached to a transmission electron microscope showed that the addition of Mo enhanced the partitioning of Re, Wand Cr in the gamma matrix while decreased the concentration of Ta in the matrix. Synchrotron radiation diffraction was adopted to measure the gamma/gamma' lattice misfit at room temperature. The results indicated that Mo addition changed the gamma/gamma' lattice misfit towards larger negative as well as increased the tetragonal distortion of the gamma lattice. Additionally, Mo addition led to microstructural instability and altered the precipitation behavior of topologically close-packed phases during 1100 degrees C exposure. Instead of precipitating directly from the matrix, the m phase was observed to be converted from the sigma phase which precipitated preferentially as a metastable intermediate in the alloy with high Mo content.
部门归属	[liu, x. g. ; wang, l. ; lou, l. h. ; zhang, j.] chinese acad sci, inst met res, superalloys div, shenyang 110016, peoples r china. [zhang, j.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; zhang, j (reprint author), chinese acad sci, inst met res, superalloys div, shenyang 110016, peoples r china. ; jianzhang@imr.ac.cn
关键词	Superalloy Molybdenum Microstructure Partitioning Behavior Lattice Misfit Nickel-base Superalloys Lattice Mismatch Creep Molybdenum Phases Misfit
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/73872
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. G.,Wang Liu, L.,Lou, L. H.,et al. Effect of Mo Addition on Microstructural Characteristics in a Re-containing Single Crystal Superalloy[J]. Journal of Materials Science & Technology,2015,31(2):143-147.
APA	X. G.,Wang Liu, L.,Lou, L. H.,&Zhang, J..(2015).Effect of Mo Addition on Microstructural Characteristics in a Re-containing Single Crystal Superalloy.Journal of Materials Science & Technology,31(2),143-147.
MLA	X. G.,et al."Effect of Mo Addition on Microstructural Characteristics in a Re-containing Single Crystal Superalloy".Journal of Materials Science & Technology 31.2(2015):143-147.