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

All Science Journal Classification (ASJC) codes

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

Fingerprint Dive into the research topics of 'The effect of Zn-Al coating on the hydrogen embrittlement of twinning-induced plasticity steels with and without Al'. Together they form a unique fingerprint.

  • Cite this