Acta Metallurgica Sinica (English Letters) ›› 2019, Vol. 32 ›› Issue (4): 495-505.DOI: 10.1007/s40195-018-0797-2
Special Issue: 2019年钢铁材料专辑; 2019年腐蚀专辑-1
• Orginal Article • Previous Articles Next Articles
Wilasinee Kingkam1, Cheng-Zhi Zhao12, Hong Li1, He-Xin Zhang1,2(), Zhi-Ming Li3
Received:
2018-05-24
Revised:
2018-06-25
Online:
2019-04-10
Published:
2019-04-19
Contact:
Zhang He-Xin
About author:
Dr. Kun-Kun Deng was born in 1983 and was awarded Ph. D in Harbin University of Technology in 2011. After graduation, he worked in the College of Materials Science and Engineering, Taiyuan University of Technology. At the same time, he continued his research work on the design, fabrication and processing of advanced Mg-based material in. Now, he is the vice chairman of Youth Committee in Magnesium Alloy Branch of Chinese Materials Research Society. He was denoted as young academic pacemaker of Shanxi Province in 2018. He has held two projects of National Nature Science Foundation of China, one project of Specialized Research Fund for the Doctoral Program of Higher Education, one Project of International Cooperation in Shanxi and two projects of Natural Science Foundation of Shanxi. He has published more than 60 articles. The time cited is more than 840 (without selfcitations), and the H-index is 22. In addition, he has published one academic monograph and acquired eight Chinese patents.
Wilasinee Kingkam, Cheng-Zhi Zhao, Hong Li, He-Xin Zhang, Zhi-Ming Li. Hot Deformation and Corrosion Resistance of High-Strength Low-Alloy Steel[J]. Acta Metallurgica Sinica (English Letters), 2019, 32(4): 495-505.
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Fig. 3 Relationships of a\(\ln \dot{\varepsilon } - \sigma\), b\(\ln \dot{\varepsilon } - \ln \sigma\), c\(\ln \dot{\varepsilon } - \ln [\sinh (\alpha \sigma )]\), d ln [ sinh (ασ)]-1000/T
Temperature (°C) | Strain rate (s-1) | |||||
---|---|---|---|---|---|---|
0.1 | 1 | 10 | ||||
σ c | ε c | σ c | ε c | σ c | ε c | |
800 | 160.95 | 0.151 | 185.5 | 0.172 | 184.58 | 0.199 |
900 | 131.14 | 0.104 | 159.72 | 0.15 | 153.44 | 0.17 |
1000 | 97.37 | 0.07 | 100.44 | 0.121 | 139.2 | 0.152 |
1100 | 74.35 | 0.04 | 96.09 | 0.102 | 100.66 | 0.11 |
Table 1 Values of critical strain and critical stress under various deformation temperatures and strain rates
Temperature (°C) | Strain rate (s-1) | |||||
---|---|---|---|---|---|---|
0.1 | 1 | 10 | ||||
σ c | ε c | σ c | ε c | σ c | ε c | |
800 | 160.95 | 0.151 | 185.5 | 0.172 | 184.58 | 0.199 |
900 | 131.14 | 0.104 | 159.72 | 0.15 | 153.44 | 0.17 |
1000 | 97.37 | 0.07 | 100.44 | 0.121 | 139.2 | 0.152 |
1100 | 74.35 | 0.04 | 96.09 | 0.102 | 100.66 | 0.11 |
Condition (°C) | Ecorr (mV) | icorr (μA/cm2) | βa (V/dec) | βc (V/dec) | Rcorr (mpy) |
---|---|---|---|---|---|
800 | -369.63 | 10.642 | 0.080 | 0.786 | 4.67 |
900 | -395.31 | 11.419 | 0.081 | 0.616 | 5.02 |
1000 | -532.84 | 14.194 | 0.457 | 0.146 | 6.24 |
1100 | -692.11 | 16.705 | 0.501 | 0.101 | 7.34 |
Table 2 Potentiodynamic polarization parameters obtained from curve fitting of HSLA steel at strain rate of 0.1 s-1
Condition (°C) | Ecorr (mV) | icorr (μA/cm2) | βa (V/dec) | βc (V/dec) | Rcorr (mpy) |
---|---|---|---|---|---|
800 | -369.63 | 10.642 | 0.080 | 0.786 | 4.67 |
900 | -395.31 | 11.419 | 0.081 | 0.616 | 5.02 |
1000 | -532.84 | 14.194 | 0.457 | 0.146 | 6.24 |
1100 | -692.11 | 16.705 | 0.501 | 0.101 | 7.34 |
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