Microstructure evolution of delta-processed IN718 during holding period after hot deformation

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	Microstructure evolution of delta-processed IN718 during holding period after hot deformation
	M. Cheng ; H. Y. Zhang ; S. H. Zhang
刊名	Journal of Materials Science
	2012
卷号	47 期号:1 页码:251-256
关键词	grain-growth model inconel-718 phase
ISSN号	0022-2461
中文摘要	Two IN718 alloys with different initial delta phase contents have been used to study the microstructure evolution during the holding period after the hot deformation by the heat treatment at 950-1040 A degrees C after deformation at temperature of 950 A degrees C and strain rate of 0.005 s(-1). The results indicate that the grain growth is restrained due to the pinning effect of delta phase. The activation energy of grain growth for the alloys with initial delta phase content of 0 and 8.14 wt% in the heat treatment after hot working were 273.8 and 882.8 kJ/mol, respectively. In addition, the dissolution of delta phase occurred during the heat treatment after the hot deformation, and the delta phase dissolved largely as the temperature is higher than 980 A degrees C. Therefore, the heating and deformation temperature should be in the range of 950-980 A degrees C for the Delta Process and multi-stage hot working processes.
原文出处	://WOS:000298326000024
公开日期	2013-02-05
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/59917]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	M. Cheng,H. Y. Zhang,S. H. Zhang. Microstructure evolution of delta-processed IN718 during holding period after hot deformation[J]. Journal of Materials Science,2012,47(1):251-256.
APA	M. Cheng,H. Y. Zhang,&S. H. Zhang.(2012).Microstructure evolution of delta-processed IN718 during holding period after hot deformation.Journal of Materials Science,47(1),251-256.
MLA	M. Cheng,et al."Microstructure evolution of delta-processed IN718 during holding period after hot deformation".Journal of Materials Science 47.1(2012):251-256.