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The Influence of Hydrogen Charging with the Volume Fraction of Phases in Dual Phase Steels
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 Title & Authors
The Influence of Hydrogen Charging with the Volume Fraction of Phases in Dual Phase Steels
Kim, Han-Sang; Kang, Kae-Myung;
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 Abstract
A study on microstructure control of multi-phase steel have been implemented to higher strength with improved formability. However, it is well known that the high strength of steel are susceptible to hydrogen embrittlement. The mechanisms of hydrogen embrittlement is caused by complex interactions. In this paper, the test specimens were fabricated to 5 type of 590DP steels at different levels of volume faction. The hydrogen charging was conducted by electrochemical hydrogen-charge method with varying charging time. The relationship between hydrogen concentration and volume fraction of 590DP steel was established by SP test and SEM-fractography. It was shown that the hydrogen amounts charged in 590DP steels increased with increasing the volume faction of austenite. The maximum loads of the 590DP steels in SP test were sharply decreased with increasing hydrogen charging time. The results of SEM-fractography investigation showed typical brittle-fracture surfaces for hydrogen-charged 590DP steels.
 Keywords
Hydrogen embrittlement;Hydrgen charging;Volume fraction;
 Language
Korean
 Cited by
1.
2종 전해질 분위기하 수소주입된 TRIP 강의 수소취성,최종운;이상욱;이경민;강계명;

한국가스학회지, 2015. vol.19. 1, pp.57-63 crossref(new window)
2.
다른 전해질분위기에서 수소주입시킨 TRIP강의 SP시험,김광식;유광현;박재우;강계명;

한국가스학회지, 2015. vol.19. 1, pp.64-70 crossref(new window)
1.
Hydrogen Embrittlement of TRIP Steel Charged with Hydrogen Under Two Type Electrolytes, Journal of the Korean Institute of Gas, 2015, 19, 1, 57  crossref(new windwow)
2.
Small Punch Test of TRIP Steel Charged with Hydrogen under Different Electrolyte Condition, Journal of the Korean Institute of Gas, 2015, 19, 1, 64  crossref(new windwow)
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