Effect of equal channel angular pressing (ECAP) on hydrogen storage properties of commercial magnesium alloy AZ61

Song-Jeng Huang, Chun Chiu, Tun-Yu Chou, Eugen Rabkin

Research output: Contribution to journalArticlepeer-review

Abstract

Cast commercial AZ61 magnesium alloys were processed through equal channel angular pressing (ECAP) and were comminuted into chips by filing with a rasp in order to measure their hydrogen storage properties. The effects of the number of ECAP passes and the processing route of ECAP on the hydrogen storage properties of AZ61 magnesium alloys were investigated. ECAP processing led to severe dynamic recrystallization and grain refinement of the AZ61 alloys. Of the analyzed samples, the AZ61 alloy processed via the Bc ECAP route with eight passes exhibited the smallest grain size, the fastest hydrogen absorption and desorption rates, and the highest gravimetric hydrogen storage capacity of 6.2 wt%.

Original languageEnglish
Pages (from-to)4371-4380
Number of pages10
JournalInternational Journal of Hydrogen Energy
Volume43
Issue number9
DOIs
StatePublished - 1 Mar 2018

Keywords

  • AZ61 magnesium alloy
  • Equal channel angular pressing (ECAP)
  • Gravity casting
  • Hydrogen storage

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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