|
|
Effect of dew point on hot-dip galvanizing behavior of a high-manganese TWIP steel for automotive application |
Ting‑dong Ren1, Wen Shi1, Ren‑dong Liu2, Li Lin2, Hong‑gang Yang2, Lin Li1, Babar Shahzad3 |
1 School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China
2 Ansteel Group Co., Anshan 114021, Liaoning, China
3 Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, Liaoning, China |
|
|
Abstract
The effect of dew points (-50, -10 and +10 °C) on the galvanizing properties of a high-manganese twinning-induced plasticity (TWIP) steel was studied. Scanning electron microscopy (SEM), glow discharge optical emission spectrometry (GDOES) and X-ray photoelectron spectroscopy (XPS) were used for microscopic observation and qualitative analysis of the interfacial layer between the steel surface and the zinc layer after hot-dip galvanizing. SEM analysis results show that three different morphologies of metallic oxides are formed on the interfacial layer under the different dew points. GDOES results show that Al is present in the molten zinc, reacting with Fe on the steel surface to form Fe2Al5, which can increase the galvanizing properties. XPS results show that the valence states of Mn in the interfacial alloy layer are Mn2+ and Mn4+, and the valence states of Fe are Fe0, Fe2+ and Fe3+. The experimental results show that the hot-dip galvanizing performance is the best at -10 °C and the formation of Mn and Fe intermetallic oxides has a bad effect on hot-dip galvanizing behavior of the high-manganese TWIP steel. The types of the formed surface oxides (MnO, Mn3O4, Mn2O3, FeO, and Fe2MnO4) on the surface of the steel sheet are confirmed. It can obtain the best hot-dip galvanizing performance of the high-manganese TWIP steel by controlling the dew point from -10 to -5 °C.
|
Received: 01 September 2019
Published: 25 October 2020
|
|
|
|
Cite this article: |
Ting‑dong Ren,Wen Shi,Ren‑dong Liu, et al. Effect of dew point on hot-dip galvanizing behavior of a high-manganese TWIP steel for automotive application[J]. Journal of Iron and Steel Research International, 2020, 27(10): 1200-1211.
|
|
|
|
[1] |
Run-sheng Xu, Shu-liang Deng, Heng Zheng, Wei Wang, Ming-ming Song, Wei Xu, Fang-fang Wang. Influence of initial iron ore particle size on CO2 gasification behavior and strength of ferro-coke[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2020, 27(8): 875-886. |
[2] |
HAI Chao, GUO Xiao-jing. Analysis of the cause of the crack of the connecting rod[J]. PHYSICS EXAMINATION AND TESTING, 2020, 38(5): 23-. |
[3] |
LI Yang, CHEN Chang-yong, LIU Cong-ying, SUN Meng, JIANG Zhou-hua. Effect of magnesium treatment on inclusions in 30CrNi2MoVA steel[J]. PHYSICS EXAMINATION AND TESTING, 2020, 38(4): 48-54. |
[4] |
LI Si-jun, DU Jin-ke, PENG Yong-xiang, LI Ping, HU Bin. Numerical simulation study on single-point unequilibrium casting for beam blank in Laiwu Iron and Steel Company[J]. CONTINUOUS CASTING, 2020, 45(3): 1-9. |
[5] |
ZHENG Yuan-shou. High speed production technology of 160 mm× 160 mm continuous casting in Sangang[J]. CONTINUOUS CASTING, 2020, 45(3): 10-13. |
[6] |
Si‑wei Li, Jian Pan, De‑qing Zhu, Zheng‑qi Guo, Ji‑wei Xu, Jian‑lei Chou. Synthesis, characterization and properties of organic compound bentonite by molecular intercalation process[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2020, 27(10): 1127-1136. |
|
|
|
|