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Dynamic Recrystallization Mechanism of Inconel 690 Superalloy During Hot deformation at High Strain Rate
B. Wang; S. H. Zhang; M. Cheng; H. W. Song
2013
Source PublicationJournal of Materials Engineering and Performance
ISSN1059-9495
Volume22Issue:8Pages:2382-2388
AbstractThe hot deformation characteristics of Inconel 690 superalloy were investigated on the Gleeble-3800 thermal-mechanical simulator. The testing temperatures were in the range of 1000-1200 A degrees C, the strain rate was 10 s(-1), and the maximum true strain was 0.9. Optical microscopy, transmission electron microscopy, and electron backscatter diffraction techniques were employed to analyze the microstructure evolution and nucleation mechanisms of dynamic recrystallization (DRX). The results show that multiple-cycle discontinuous dynamic recrystallization (DDRX) occurs in the process of hot deformation under the conditions above. DRX grain size decreases with decreasing temperature and increasing strain. DDRX with sub-grains directly transforming into grains is the dominating nucleation mechanism of DRX. And, the nucleation mechanism of bulging of the original grain boundaries can only be considered as an assistant nucleation mechanism of DRX, which mainly occurs in the beginning of the deformation.
description.department[wang, bin ; zhang, shi-hong ; cheng, ming ; song, hong-wu] chinese acad sci, inst met res, shenyang 110016, peoples r china. ; wang, b (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china. ; shzhang@imr.ac.cn
KeywordDrx Hot Deformation Inconel 690 Superalloy Microstructure Evolution Alloy Behavior Microstructure Evolution Aluminum Growth Tubes
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/71511
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
B. Wang,S. H. Zhang,M. Cheng,et al. Dynamic Recrystallization Mechanism of Inconel 690 Superalloy During Hot deformation at High Strain Rate[J]. Journal of Materials Engineering and Performance,2013,22(8):2382-2388.
APA B. Wang,S. H. Zhang,M. Cheng,&H. W. Song.(2013).Dynamic Recrystallization Mechanism of Inconel 690 Superalloy During Hot deformation at High Strain Rate.Journal of Materials Engineering and Performance,22(8),2382-2388.
MLA B. Wang,et al."Dynamic Recrystallization Mechanism of Inconel 690 Superalloy During Hot deformation at High Strain Rate".Journal of Materials Engineering and Performance 22.8(2013):2382-2388.
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