Effect of Hydrogen on Tensile Properties of a Ductile Cast Iron

Hisao Matsunaga, Kenshin Matsuno, Katsuya Hayashida

研究成果: 著書/レポートタイプへの貢献

抄録

Effect of hydrogen-charging and strain rate was investigated on the tensile properties of a ductile cast iron having the microstructure comprised of ferrite/pearlite matrix and spheroidal graphites. Hydrogen-charging accelerated the process of crack growth from graphite. The crack growth acceleration resulted in a marked decrease in reduction of area at final fracture (RA). In the uncharged specimens RA was nearly constant with strain rate, whereas in the hydrogen-charged specimens RA was gradually decreased with a decrease in strain rate. Thermal desorption spectroscopy and hydrogen microprint technique revealed that in the hydrogen-charged specimen most of solute hydrogen was diffusive and mainly segregated at graphite, graphite/matrix interface zone and pearlite. Considering all the obtained results together, the hydrogen-induced degradation was attributed to a combination of the following three factors: (i) hydrogen supply to the crack tip from the graphite/matrix interface zone, (ii) hydrogen-enhanced pearlite cracking and (iii) successive hydrogen emission from the graphite and additional supply to the crack tip.

元の言語英語
ホスト出版物のタイトルSupplemental Proceedings
ホスト出版物のサブタイトルGeneral Paper Selections
出版者John Wiley and Sons Inc.
ページ447-454
ページ数8
3
ISBN(電子版)9781118062173
ISBN(印刷物)9781118029473
DOI
出版物ステータス出版済み - 5 3 2011

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Cast iron
Tensile properties
Hydrogen
Graphite
Pearlite
Strain rate
Crack tips
Crack propagation
Thermal desorption spectroscopy
Ferrite
Degradation
Microstructure

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Materials Science(all)

これを引用

Matsunaga, H., Matsuno, K., & Hayashida, K. (2011). Effect of Hydrogen on Tensile Properties of a Ductile Cast Iron. : Supplemental Proceedings: General Paper Selections (巻 3, pp. 447-454). John Wiley and Sons Inc.. https://doi.org/10.1002/9781118062173.ch56

Effect of Hydrogen on Tensile Properties of a Ductile Cast Iron. / Matsunaga, Hisao; Matsuno, Kenshin; Hayashida, Katsuya.

Supplemental Proceedings: General Paper Selections. 巻 3 John Wiley and Sons Inc., 2011. p. 447-454.

研究成果: 著書/レポートタイプへの貢献

Matsunaga, H, Matsuno, K & Hayashida, K 2011, Effect of Hydrogen on Tensile Properties of a Ductile Cast Iron. : Supplemental Proceedings: General Paper Selections. 巻. 3, John Wiley and Sons Inc., pp. 447-454. https://doi.org/10.1002/9781118062173.ch56
Matsunaga H, Matsuno K, Hayashida K. Effect of Hydrogen on Tensile Properties of a Ductile Cast Iron. : Supplemental Proceedings: General Paper Selections. 巻 3. John Wiley and Sons Inc. 2011. p. 447-454 https://doi.org/10.1002/9781118062173.ch56
Matsunaga, Hisao ; Matsuno, Kenshin ; Hayashida, Katsuya. / Effect of Hydrogen on Tensile Properties of a Ductile Cast Iron. Supplemental Proceedings: General Paper Selections. 巻 3 John Wiley and Sons Inc., 2011. pp. 447-454
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