Effects of Hydrogen on the Mechanical Properties of Pure Magnesium

• Chino Yasumasa

  Materials Research Institute for Sustainable Development, National Institute of Advanced Industrial Science and Technology

• Nishihara Daiki

  Department of Energy Science and Technology, Graduate School of Energy Science, Kyoto University

• Ueda Takamichi

  Department of Energy Science and Technology, Graduate School of Energy Science, Kyoto University

• Mabuchi Mamoru

  Department of Energy Science and Technology, Graduate School of Energy Science, Kyoto University

Abstract

Tensile tests and Charpy impact tests have been performed on pure cast Mg with hydrogen concentrations of 16–35 mass ppm, where hydrogen was mainly segregated at triple junction of grain boundaries. Tensile properties were not affected by the hydrogen concentration, but crack formation at grain boundaries was enhanced by an increase in hydrogen concentration. The Charpy impact tests showed that the Mg with a higher hydrogen concentration exhibited a higher ductile-brittle transition temperature and that the temperature dependence of the Charpy impact energy was in good agreement with that of fractography. Thus, the segregation of hydrogen at grain boundaries likely induced the intergranular fracture of Mg.

Journal

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 52 (6), 1123-1126, 2011

  The Japan Institute of Metals and Materials

Keywords

• magnesium
• hydrogen embrittlement
• mechanical properties
• fracture
• Charpy impact test

Details

• CRID: 1390001204249133184
• NII Article ID: 10028252444
• NII Book ID: AA1151294X
• DOI: 10.2320/matertrans.mc201009
• ISSN: 13475320
• ISSN: 13459678
• NDL BIB ID: 11106690
• Web Site: http://id.ndl.go.jp/bib/11106690
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I11106690
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/52/6/52_MC201009/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed