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The Effect of Hydrogen on the Variation of Properties at the Surface Layers of 590 MPa DP Steels Charged with Hydrogen
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 Title & Authors
The Effect of Hydrogen on the Variation of Properties at the Surface Layers of 590 MPa DP Steels Charged with Hydrogen
Choi, Jong-Un; Park, Jae-Woo; Kang, Kae-Myung;
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 Abstract
It was investigated that the effects of hydrogen charging on the properties of 590 MPa Dual Phase(DP) steels at the surface layers. The hydrogen-charging time was changed from 5 to 50 hours and current densities from 100, 150, and 200 , respectively. It was found that the hydrogen content in the specimen was increased with as the charging time and the current density. The microvickers hardness of the subsurface zone was increased from 215.3 HV to 239.5 HV due to the increase in current density and charging time. The comparison of the absorbed energies tested by a small-punch (SP) test showed that the absorbed energy of the specimen was greatly reduced from 436 to 283 because of hydrogen embrittlement. It was confirmed that bulb aspects of fracture surface became more brittle with increasing hydrogen content.
 Keywords
Hydrogen content;Charging time and current density;Microvickers hardness;Subsurface zone;Small punch test;Bulb aspects of fracture surface;
 Language
Korean
 Cited by
1.
수소주입시킨 DP박강판의 SP시험과 수소취성 관계 해석,박재우;강계명;

한국가스학회지, 2014. vol.18. 1, pp.61-67 crossref(new window)
2.
수소주입시킨 680MPa DP강의 나노인덴터 시험,최종운;박재우;강계명;

한국표면공학회지, 2014. vol.47. 1, pp.33-38 crossref(new window)
3.
2종 전해질에서의 전기화학적 수소주입조건에 따른 680 MPa DP 박강판의 수소취성,박재우;강계명;

한국표면공학회지, 2014. vol.47. 5, pp.257-262 crossref(new window)
4.
소형펀치시험에 의한 5종의 고강도 DP강 수소취성 평가,최종운;한경구;박재우;강계명;

한국가스학회지, 2014. vol.18. 5, pp.40-46 crossref(new window)
5.
다른 전해질분위기에서 수소주입시킨 TRIP강의 SP시험,김광식;유광현;박재우;강계명;

한국가스학회지, 2015. vol.19. 1, pp.64-70 crossref(new window)
1.
Evaluation on Hydrogen Embrittlement of 5 Types of High Strength Dual Phase Steels by Small Punch Test, Journal of the Korean Institute of Gas, 2014, 18, 5, 40  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)
3.
Hydrogen Embrittlement of 680 MPa DP sheet steel with Electrochemical Hydrogen charging conditions of Two Electrolytes, Journal of the Korean institute of surface engineering, 2014, 47, 5, 257  crossref(new windwow)
4.
Nanoindenter Test of 680MPa Dual Phase Steel Charged with Hydrogen, Journal of the Korean institute of surface engineering, 2014, 47, 1, 33  crossref(new windwow)
5.
Analysis of Correlation between the Hydrogen Embrittlement and the Small Punch Test for Hydrogen-charged Dual Phase Steels, Journal of the Korean Institute of Gas, 2014, 18, 1, 61  crossref(new windwow)
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