Residual Stress Evolution and Its Mechanism During the Manufacture of Superalloy Disk Forgings

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	Residual Stress Evolution and Its Mechanism During the Manufacture of Superalloy Disk Forgings
	Bi Zhongnan 1; Qin Hailong 1; Dong Zhiguo 3; Wang Xiangping 3; Wang Ming 3; Liu Yongquan 3; Du Jinhui 1; Zhang Ji 1
刊名	ACTA METALLURGICA SINICA
	2019
卷号	55 期号:9 页码:1160-1174
关键词	TEMPERATURE STRUCTURE STABILITY SITU NEUTRON-DIFFRACTION IN-SITU SINGLE-CRYSTAL CREEP-BEHAVIOR TURBINE DISC INCONEL 718 RELAXATION MICROSTRUCTURE DISTORTION superalloy residual stress neutron diffraction contour method turbine disk
ISSN号	0412-1961
其他题名	Residual Stress Evolution and Its Mechanism During the Manufacture of Superalloy Disk Forgings
英文摘要	Significant interior residual stresses, which were generated during the manufacture process, could affect the machining dimension precision and structural stability during the subsequent machining process and service operation in the superalloys component, such as turbine disk. In this paper, the neutron diffraction method and contour method are described for measuring the distribution of interior residual stresses. The distribution, evolution of interior residual stress, and its mechanism are analyzed during quenching, ageing heat treatment and machining process in superalloys disk forging. The residual stresses are mainly generated by the temperature gradient formed during rapid cooling after solution heat treatment. After quenching, the residual stresses in hoop direction and radial direction of disc forging are significant, and its distribution along the profile is characterized by "internal tension and external pressure". The magnitudes of the residual stresses are equivalent to the yield strength of as-quenched alloys at room temperature. Quenching-induced residual stresses are partially relieved during the ageing process due to plastic strain and creep-controlled dislocation rearrangement. The precipitation behavior of gamma '' or gamma' phase during heat treatment has a significant interaction with the distribution and magnitude of residual stress. During the machining process, part of the residual stresses contributing to the equilibrium of the internal forces are removed along with the material. Additional moment caused by re-balance of residual stresses results in the serious consequences of distortion in the remaining body.
资助项目	[National Natural Science Foundation of China] ; [National Key Research and Development Program of China]
语种	英语
CSCD记录号	CSCD:6561575
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/142820]
专题	金属研究所_中国科学院金属研究所
作者单位	1.Cent Iron & Steel Res Institute, Beijing Key Lab Adv High Temp Mat, Beijing 100081, Peoples R China 2.CISRI GAONA Co Ltd, Beijing 100081, Peoples R China 3.中国科学院金属研究所
推荐引用方式 GB/T 7714	Bi Zhongnan,Qin Hailong,Dong Zhiguo,et al. Residual Stress Evolution and Its Mechanism During the Manufacture of Superalloy Disk Forgings[J]. ACTA METALLURGICA SINICA,2019,55(9):1160-1174.
APA	Bi Zhongnan.,Qin Hailong.,Dong Zhiguo.,Wang Xiangping.,Wang Ming.,...&Zhang Ji.(2019).Residual Stress Evolution and Its Mechanism During the Manufacture of Superalloy Disk Forgings.ACTA METALLURGICA SINICA,55(9),1160-1174.
MLA	Bi Zhongnan,et al."Residual Stress Evolution and Its Mechanism During the Manufacture of Superalloy Disk Forgings".ACTA METALLURGICA SINICA 55.9(2019):1160-1174.