Effect of hydrogen on tensile properties of a ductile cast iron

Hisao Matsunaga, Kenshin Matsuno, Katsuya Hayashida

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publicationTMS 2011 - 140th Annual Meeting and Exhibition, Supplemental Proceedings
Pages447-454
Number of pages8
Volume3
Publication statusPublished - 2011
Externally publishedYes
EventTMS 2011 - 140th Annual Meeting and Exhibition - San Diego, CA, United States
Duration: Feb 27 2011Mar 3 2011

Other

OtherTMS 2011 - 140th Annual Meeting and Exhibition
CountryUnited States
CitySan Diego, CA
Period2/27/113/3/11

Fingerprint

tensile properties
Cast iron
Tensile properties
casts
Hydrogen
iron
Graphite
hydrogen
pearlite
graphite
Pearlite
strain rate
Strain rate
crack tips
Crack tips
charging
Crack propagation
matrices
cracks
Thermal desorption spectroscopy

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

Cite this

Matsunaga, H., Matsuno, K., & Hayashida, K. (2011). Effect of hydrogen on tensile properties of a ductile cast iron. In TMS 2011 - 140th Annual Meeting and Exhibition, Supplemental Proceedings (Vol. 3, pp. 447-454)

Effect of hydrogen on tensile properties of a ductile cast iron. / Matsunaga, Hisao; Matsuno, Kenshin; Hayashida, Katsuya.

TMS 2011 - 140th Annual Meeting and Exhibition, Supplemental Proceedings. Vol. 3 2011. p. 447-454.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Matsunaga, H, Matsuno, K & Hayashida, K 2011, Effect of hydrogen on tensile properties of a ductile cast iron. in TMS 2011 - 140th Annual Meeting and Exhibition, Supplemental Proceedings. vol. 3, pp. 447-454, TMS 2011 - 140th Annual Meeting and Exhibition, San Diego, CA, United States, 2/27/11.
Matsunaga H, Matsuno K, Hayashida K. Effect of hydrogen on tensile properties of a ductile cast iron. In TMS 2011 - 140th Annual Meeting and Exhibition, Supplemental Proceedings. Vol. 3. 2011. p. 447-454
Matsunaga, Hisao ; Matsuno, Kenshin ; Hayashida, Katsuya. / Effect of hydrogen on tensile properties of a ductile cast iron. TMS 2011 - 140th Annual Meeting and Exhibition, Supplemental Proceedings. Vol. 3 2011. pp. 447-454
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