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Mechanisms and microstructures of2A97 Al-Lialloy under the hot forming with synchronous quenching process
Zhang, Peng1; Chen, Ming-He1; Chen, Wei1,2; Zhang, Shi-Hong3; Xu, Yong3
Corresponding AuthorChen, Ming-He(meemhchen@nuaa.edu.cn)
2020-09-29
Source PublicationMICROSCOPY RESEARCH AND TECHNIQUE
ISSN1059-910X
Pages10
AbstractAluminum-lithium alloy is regarded as the most promising light material in the aircraft and aerospace industries. For the production of complex and high-precision parts, the hot forming with synchronous quenching (HFSQ) process has become an effective and attractive forming method. In order to achieve the performance and microstructure evolution of the 2A97 Al-Li alloy under the HFSQ process, the specimens were subjected to solution treatment at 520 degrees C and held at 90 min in the Gleeble 3,500 thermal simulator. Then the hot tensile test with simultaneous quenching was conducted directly at a temperature of 300-500 degrees C and a strain rate of 0.1-0.001 s(-1)with the same equipment. Through analyzing the macroscopic stress-strain curves and microscopic fractures, it was concluded that the optimal forming temperature was 450 degrees C with the strain rate being 0.1 s(-1)and its forming mechanism under the process was presented. To obtain the microstructure evolution of 2A97 Al-Li alloy under the HFSQ process, the material was subjected to constant strain tensile test with synchronous quenching and then treated with two-stage artificial aging 200 degrees C and 6 hr + 165 degrees C and 6 hr. The microstructure of the alloy was observed by means of electron backscattering diffraction (EBSD). And its evolution process and the influence of temperature, strain rate, and strain on the microstructure under the process were attained.
KeywordEBSD fracture hot forming mechanical property
Funding OrganizationNational Natural Science Foundation of China
DOI10.1002/jemt.23593
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51175252]
WOS Research AreaAnatomy & Morphology ; Life Sciences & Biomedicine - Other Topics ; Microscopy
WOS SubjectAnatomy & Morphology ; Biology ; Microscopy
WOS IDWOS:000573378100001
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/140791
Collection中国科学院金属研究所
Corresponding AuthorChen, Ming-He
Affiliation1.Nanjing Univ Aeronaut & Astronaut, Coll Mech & Elect Engn, Nanjing 210016, Peoples R China
2.Chinalco Mat Applicat Res Inst Co Ltd, Suzhou Branch, Suzhou, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Peng,Chen, Ming-He,Chen, Wei,et al. Mechanisms and microstructures of2A97 Al-Lialloy under the hot forming with synchronous quenching process[J]. MICROSCOPY RESEARCH AND TECHNIQUE,2020:10.
APA Zhang, Peng,Chen, Ming-He,Chen, Wei,Zhang, Shi-Hong,&Xu, Yong.(2020).Mechanisms and microstructures of2A97 Al-Lialloy under the hot forming with synchronous quenching process.MICROSCOPY RESEARCH AND TECHNIQUE,10.
MLA Zhang, Peng,et al."Mechanisms and microstructures of2A97 Al-Lialloy under the hot forming with synchronous quenching process".MICROSCOPY RESEARCH AND TECHNIQUE (2020):10.
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