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Residual Stress Evolution and Its Mechanism During the Manufacture of Superalloy Disk Forgings
Alternative TitleResidual Stress Evolution and Its Mechanism During the Manufacture of Superalloy Disk Forgings
Bi Zhongnan1; Qin Hailong1; Dong Zhiguo3; Wang Xiangping3; Wang Ming3; Liu Yongquan3; Du Jinhui1; Zhang Ji1
2019
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume55Issue:9Pages:1160-1174
AbstractSignificant 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.
KeywordTEMPERATURE 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
Indexed ByCSCD
Language英语
Funding Project[National Natural Science Foundation of China] ; [National Key Research and Development Program of China]
CSCD IDCSCD:6561575
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/142821
Collection中国科学院金属研究所
Affiliation1.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
Recommended Citation
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.
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