EFFECT OF HYDROGEN ON MECHANICAL BEHAVIOR AND FRACTURE MECHANISMS IN A LOW CARBON AND LOW ALLOYS 2.25 CR-1 MO STEEL

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FARHANGI H.; GHASEM S.; ABEDI SH.

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Journal: Year:2003 | Volume:36 | Issue:4 (78) Page(s): 571-581

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Title

EFFECT OF HYDROGEN ON MECHANICAL BEHAVIOR AND FRACTURE MECHANISMS IN A LOW CARBON AND LOW ALLOYS 2.25 CR-1 MO STEEL

Author(s)

FARHANGI H. | GHASEM S. | ABEDI SH. | Issue Writer Certificate

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Abstract

Effect of Hydrogen on Mechanical Behavior, strength and ductility properties and related fracture mechanisms in a low carbon and low alloy 2.25 Cr- 1 Mo biotitic steel were studied. Entrance of hydrogen into the microstructure was done by cathodic charging in 1N sulfuric acid containing arsenic trioxide as a catholic poison. Immediately after catholic hydrogen charging, slow strain rate testing (SSRT) at strain rates of 10-6 to 10-4s-1, as well as ordinary tension test and sustained load test were performed. Fractographic investigation were performed using stereo and scanning electron microscopes. The process of hydrogen charging into the alloy steel brings about reductions in strength and ductility properties leading to a completely brittle mechanical behavior. The results of fractographic studies showed that hydrogen induced cracking was initiated at subsurface inclusion-matrix interfaces, which initially propagated by an inter-granular cracking mechanism, and was followed by extensive low energy quasi-cleavage mode at later stages of crack growth. Crack growth mechanisms under various testing conditions are presented in a schematic model and discussed.

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References

تاثیر نرخ کرنش بر شکست ناشی از هیدروژن در فولاد کم کربن و کم آلیاژ 2.25Cr-IMo

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APA: Copy

FARHANGI, H., GHASEM, S., & ABEDI, SH.. (2003). EFFECT OF HYDROGEN ON MECHANICAL BEHAVIOR AND FRACTURE MECHANISMS IN A LOW CARBON AND LOW ALLOYS 2.25 CR-1 MO STEEL. JOURNAL OF FACULTY OF ENGINEERING (UNIVERSITY OF TEHRAN), 36(4 (78)), 571-581. SID. https://sid.ir/paper/14273/en

Vancouver: Copy

FARHANGI H., GHASEM S., ABEDI SH.. EFFECT OF HYDROGEN ON MECHANICAL BEHAVIOR AND FRACTURE MECHANISMS IN A LOW CARBON AND LOW ALLOYS 2.25 CR-1 MO STEEL. JOURNAL OF FACULTY OF ENGINEERING (UNIVERSITY OF TEHRAN)[Internet]. 2003;36(4 (78)):571-581. Available from: https://sid.ir/paper/14273/en

IEEE: Copy

H. FARHANGI, S. GHASEM, and SH. ABEDI, “EFFECT OF HYDROGEN ON MECHANICAL BEHAVIOR AND FRACTURE MECHANISMS IN A LOW CARBON AND LOW ALLOYS 2.25 CR-1 MO STEEL,” JOURNAL OF FACULTY OF ENGINEERING (UNIVERSITY OF TEHRAN), vol. 36, no. 4 (78), pp. 571–581, 2003, [Online]. Available: https://sid.ir/paper/14273/en

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