Recrystallisation nucleation of nickel base single crystal superalloy under compression

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	Recrystallisation nucleation of nickel base single crystal superalloy under compression
	J.; Wang Meng, L.; Jin, T.; Sun, X. F.; Hu, Z. Q.
	2014
发表期刊	Materials Research Innovations
ISSN	1432-8917
卷号	18 页码:435-437
摘要	Recrystallisation nucleation of a nickel base single crystal superalloy cold deformed by compression and annealed at various temperatures has been investigated. The specimens were compressed using universal testing machine under an initial strain rate of 5x10(-4) s(-1) at room temperature. Annealing temperatures were chosen from 1100 to 1300 degrees C. The microstructure changes of the deformed and annealed samples were observed by optical microscopy, SEM with electron backscatter diffraction and TEM. It has been found that the surface and dendritic core are the preferential nucleation sites of recrystallised nucleus. The surface may lead to dislocation loss and relaxation of long range stresses, which will induce the recrystallised grains. At the dendritic core, rapid dissolution of gamma' particles during annealing reduces the resistance of grain boundary migration. Nucleation by low angle boundary migration and bow was confirmed during the recrystallisation of nickel base single crystal superalloy.
部门归属	[meng, j. ; wang, l. ; jin, t. ; sun, x. f. ; hu, z. q.] chinese acad sci, inst met res, dept superalloy, shenyang 110016, peoples r china. ; meng, j (reprint author), chinese acad sci, inst met res, dept superalloy, 72 wenhua rd, shenyang 110016, peoples r china. ; jmeng@imr.ac.cn
关键词	Nickel Base Single Crystal Superalloy Recrystallisation Nucleation Behavior
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/73887
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J.,Wang Meng, L.,Jin, T.,et al. Recrystallisation nucleation of nickel base single crystal superalloy under compression[J]. Materials Research Innovations,2014,18:435-437.
APA	J.,Wang Meng, L.,Jin, T.,Sun, X. F.,&Hu, Z. Q..(2014).Recrystallisation nucleation of nickel base single crystal superalloy under compression.Materials Research Innovations,18,435-437.
MLA	J.,et al."Recrystallisation nucleation of nickel base single crystal superalloy under compression".Materials Research Innovations 18(2014):435-437.