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

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)156-165
Number of pages10
JournalJournal of Alloys and Compounds
Volume776
DOIs
Publication statusPublished - 2019 Mar 5

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Galvanizing
Hydrogen embrittlement
Steel
Twinning
Plasticity
Bearings (structural)
Coatings
Embrittlement
Elongation
Crack propagation
Desorption

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

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title = "The effect of Zn-Al coating on the hydrogen embrittlement of twinning-induced plasticity steels with and without Al",
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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The effect of Zn-Al coating on the hydrogen embrittlement of twinning-induced plasticity steels with and without Al. / Kwon, Hyeok Jun; Nam, Jae Hoon; Yu, Sang Hyun; Lee, Young-Kook.

In: Journal of Alloys and Compounds, Vol. 776, 05.03.2019, p. 156-165.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The effect of Zn-Al coating on the hydrogen embrittlement of twinning-induced plasticity steels with and without Al

AU - Kwon, Hyeok Jun

AU - Nam, Jae Hoon

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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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