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Evaluation of Varying Ductile Fracture Criteria for 42CrMo Steel by Compressions at Different Temperatures and Strain Rates
Joint Authors
Mao, An
Liang, Jian-ting
Quan, Guo-Zheng
Luo, Gui-Chang
Wu, Dong-Sen
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-01-30
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
Fracturing by ductile damage occurs quite naturally in metal forming processes, and ductile fracture of strain-softening alloy, here 42CrMo steel, cannot be evaluated through simple procedures such as tension testing.
Under these circumstances, it is very significant and economical to find a way to evaluate the ductile fracture criteria (DFC) and identify the relationships between damage evolution and deformation conditions.
Under the guidance of the Cockcroft-Latham fracture criteria, an innovative approach involving hot compression tests, numerical simulations, and mathematic computations provides mutual support to evaluate ductile damage cumulating process and DFC diagram along with deformation conditions, which has not been expounded by Cockcroft and Latham.
The results show that the maximum damage value appears in the region of upsetting drum, while the minimal value appears in the middle region.
Furthermore, DFC of 42CrMo steel at temperature range of 1123 ~ 1348 K and strain rate of 0.01 ~ 10 s - 1 are not constant but change in a range of 0.160 ~ 0.226; thus, they have been defined as varying ductile fracture criteria (VDFC) and characterized by a function of temperature and strain rate.
In bulk forming operations, VDFC help technicians to choose suitable process parameters and avoid the occurrence of fracture.
American Psychological Association (APA)
Quan, Guo-Zheng& Luo, Gui-Chang& Mao, An& Liang, Jian-ting& Wu, Dong-Sen. 2014. Evaluation of Varying Ductile Fracture Criteria for 42CrMo Steel by Compressions at Different Temperatures and Strain Rates. The Scientific World Journal،Vol. 2014, no. 2014, pp.1-10.
https://search.emarefa.net/detail/BIM-1050172
Modern Language Association (MLA)
Quan, Guo-Zheng…[et al.]. Evaluation of Varying Ductile Fracture Criteria for 42CrMo Steel by Compressions at Different Temperatures and Strain Rates. The Scientific World Journal No. 2014 (2014), pp.1-10.
https://search.emarefa.net/detail/BIM-1050172
American Medical Association (AMA)
Quan, Guo-Zheng& Luo, Gui-Chang& Mao, An& Liang, Jian-ting& Wu, Dong-Sen. Evaluation of Varying Ductile Fracture Criteria for 42CrMo Steel by Compressions at Different Temperatures and Strain Rates. The Scientific World Journal. 2014. Vol. 2014, no. 2014, pp.1-10.
https://search.emarefa.net/detail/BIM-1050172
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1050172