Dynamic strain aging and serrated flow behavior of Cr-Ti-B low carbon steel during warm deformation

2021 ◽  
Vol 172 ◽  
pp. 110828
Author(s):  
Ankang Huang ◽  
Zhigang Wang ◽  
Xin Liu ◽  
Qiangqiang Yuan ◽  
Jieyun Ye ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Dynamic Strain Aging ◽  
Strain Aging ◽  
Flow Behavior ◽  
Low Carbon Steel ◽  
Dynamic Strain ◽  
Low Carbon ◽  
Warm Deformation ◽  
Serrated Flow

Warm Deformation and Dynamic Strain Aging of a Nb-Cr Microalloyed Low-Carbon Steel

2020 ◽  
Vol 51 (9) ◽  
pp. 4623-4631
Author(s):  
Zhigang Wang ◽  
Xin Liu ◽  
Qiangqiang Yuan ◽  
Rongchun Chen ◽  
Jianguo He ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Dynamic Strain Aging ◽  
Strain Aging ◽  
Low Carbon Steel ◽  
Dynamic Strain ◽  
Low Carbon ◽  
Warm Deformation

scholarly journals Study on Serration Flow and Dynamic Strain Aging of Cr-Ti-B Low-Carbon Steel

2021 ◽  
Author(s):  
Ankang Huang ◽  
Zhigang Wang ◽  
Qiangqiang Yuan ◽  
Rongchun Chen ◽  
Yinhui Zhang ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Dynamic Strain Aging ◽  
Strain Aging ◽  
Low Carbon Steel ◽  
Dynamic Strain ◽  
Low Carbon

scholarly journals Dynamic Strain Aging and the Wire Drawing of Low Carbon Steel Rods.

1995 ◽  
Vol 35 (12) ◽  
pp. 1532-1540 ◽  
Author(s):  
A. Karimi Taheri ◽  
T. M. Maccagno ◽  
J. J. Jonas
Keyword(s):  
Carbon Steel ◽  
Dynamic Strain Aging ◽  
Strain Aging ◽  
Low Carbon Steel ◽  
Wire Drawing ◽  
Dynamic Strain ◽  
Low Carbon ◽  
The Wire

The relationship between dynamic strain aging and serrated flow behaviour in magnesium alloy

2017 ◽  
Vol 97 (6) ◽  
pp. 235-240 ◽  
Author(s):  
W. H. Wang ◽  
D. Wu ◽  
S. S. Shah ◽  
J. H. Ni ◽  
R. S. Chen ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Dynamic Strain Aging ◽  
Strain Aging ◽  
Flow Behaviour ◽  
Dynamic Strain ◽  
Serrated Flow ◽  
The Relationship

Numerical simulation of dynamic strain-induced austenite–ferrite transformation in a low carbon steel

2009 ◽  
Vol 57 (10) ◽  
pp. 2956-2968 ◽  
Author(s):  
Chengwu Zheng ◽  
Namin Xiao ◽  
Luhan Hao ◽  
Dianzhong Li ◽  
Yiyi Li
Keyword(s):  
Numerical Simulation ◽  
Carbon Steel ◽  
Low Carbon Steel ◽  
Dynamic Strain ◽  
Low Carbon ◽  
Ferrite Transformation

scholarly journals Elasto-thermoviscoplastic finite element analyses of cold upsetting and forging processes of S25C steel with dynamic strain aging considered

2021 ◽  
Vol 2047 (1) ◽  
pp. 012001
Author(s):  
S M Ji ◽  
M K Razali ◽  
K H Lee ◽  
W J Chung ◽  
M S Joun
Keyword(s):  
Finite Element ◽  
Flow Stress ◽  
Dynamic Strain Aging ◽  
Strain Aging ◽  
Large Strain ◽  
Flow Behavior ◽  
Cold Forging ◽  
Dynamic Strain ◽  
Strain Effect ◽  
Strain And Strain Rate

Abstract A practical methodology is presented to characterize the thermoviscoplastic flow stress at larger strain over the temperature range of cold metal forming using tensile and compression tests. Its importance is emphasized for non-isothermal finite element (FE) analysis of automatic multi-stage cold forging (AMSCF) process where maximum strain and strain rate exceed around 3.0 and 200/s, respectively. The experimental compressive flow stress is first characterized using traditional bilinear C-m model with high accuracy. It is employed for describing the closed-form function model to extrapolate the experimental flow stress over the experimentally uncovered ranges of state variables. The strain effect on the flow stress is then improved using the experimental tensile flow stress accurately calculated at large strain and room temperature. A complicated flow behavior of S25C characterized by its dynamic strain aging features is expressed by the presented methodology, which is utilized to analyze the test upsetting and AMSCF processes by the elasto-thermoviscoplastic finite element method for revealing the effects of flow stresses on the process.

Dynamic Strain Aging during Tensile Deformation of Extruded AZ81 Magnesium Alloy

2013 ◽  
Vol 652-654 ◽  
pp. 1937-1941 ◽  
Author(s):  
Si Qian Zhang ◽  
Liang Mao ◽  
Li Jia Chen
Keyword(s):  
Dynamic Strain Aging ◽  
Strain Aging ◽  
Tensile Deformation ◽  
Rate Sensitivity ◽  
Dynamic Strain ◽  
Dynamic Strain Ageing ◽  
Strain Ageing ◽  
Serrated Flow ◽  
Chatelier Effect ◽  
Solute Atoms

Serrated flow has been observed in AZ81 alloy during tensile deformation. The observed static strain ageing effect and negative strain rate sensitivity suggest that the serrated flow is due to interaction between dislocations and solute atoms, know as dynamic strain ageing (DSA). The Portevin-Le Chatelier effect is observed at temperatures between 150oC~200oC and 125oC~200oC. In the microstructure of deformed samples dislocations and twins is observed. It is suggested that the occurrence of the dynamic strain aging is associated with interactions between solute atoms and dislocations.

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