The effect of Zn-Al coating on the hydrogen embrittlement of twinning-induced plasticity steels with and without Al

Hyeok Jun Kwon; Jae Hoon Nam; Sang Hyun Yu; Young Kook Lee

doi:10.1016/j.jallcom.2018.10.199

The effect of Zn-Al coating on the hydrogen embrittlement of twinning-induced plasticity steels with and without Al

Hyeok Jun Kwon, Jae Hoon Nam, Sang Hyun Yu, Young Kook Lee

Department of Materials Science and Engineering

Research output: Contribution to journal › Article

1 Citation (Scopus)

Abstract

We investigated the effect of Zn-Al hot-dip galvanizing on the H embrittlement of twinning-induced plasticity steels with and without Al. Both hot-dip galvanized specimens had coating layers consisting of the Al-bearing η-Zn layer and the Fe-Al inhibition layer. Zn-Al hot-dip galvanizing and additional H-charging hardly reduced the elongation. These results are closely related to crack propagation. The H desorption energy values of the matrix, the η-Zn layer, and the inhibition layer were 34.7, 52.6, and 60.8 kJ mol⁻¹, respectively. The inhibition layer revealed the strongest H trapping ability and the highest H concentration.

Original language	English
Pages (from-to)	156-165
Number of pages	10
Journal	Journal of Alloys and Compounds
Volume	776
DOIs	https://doi.org/10.1016/j.jallcom.2018.10.199
Publication status	Published - 2019 Mar 5

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All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Cite this

Kwon, H. J., Nam, J. H., Yu, S. H., & Lee, Y. K. (2019). The effect of Zn-Al coating on the hydrogen embrittlement of twinning-induced plasticity steels with and without Al. Journal of Alloys and Compounds, 776, 156-165. https://doi.org/10.1016/j.jallcom.2018.10.199

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abstract = "We investigated the effect of Zn-Al hot-dip galvanizing on the H embrittlement of twinning-induced plasticity steels with and without Al. Both hot-dip galvanized specimens had coating layers consisting of the Al-bearing η-Zn layer and the Fe-Al inhibition layer. Zn-Al hot-dip galvanizing and additional H-charging hardly reduced the elongation. These results are closely related to crack propagation. The H desorption energy values of the matrix, the η-Zn layer, and the inhibition layer were 34.7, 52.6, and 60.8 kJ mol−1, respectively. The inhibition layer revealed the strongest H trapping ability and the highest H concentration.",

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AU - Lee, Young Kook

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AB - We investigated the effect of Zn-Al hot-dip galvanizing on the H embrittlement of twinning-induced plasticity steels with and without Al. Both hot-dip galvanized specimens had coating layers consisting of the Al-bearing η-Zn layer and the Fe-Al inhibition layer. Zn-Al hot-dip galvanizing and additional H-charging hardly reduced the elongation. These results are closely related to crack propagation. The H desorption energy values of the matrix, the η-Zn layer, and the inhibition layer were 34.7, 52.6, and 60.8 kJ mol−1, respectively. The inhibition layer revealed the strongest H trapping ability and the highest H concentration.

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10.1016/j.jallcom.2018.10.199