Research Article
BibTex RIS Cite

Effect of Microstructure on mechanical and Charpy impact properties offerrite-martensite dual phase API X52 pipeline Steel

Year 2017, Volume: 3 Issue: 2, 33 - 36, 01.11.2017

Abstract

The microstructural changes that occur during intercritical annealing
treatment at 780°C of API X52 steel have been investigated. Three treatments
were developed to produce dual phase (DP) microstructure: Intermediate
Quenching Treatment/Air (IQ/A), Intermediate Quenching Treatment/Water (IQ/W)
and Step Quenching Treatment (SQ).
The IQ/W resulted in the formation of fine and
fibrous martensite morphology uniformly distributed in the ferrite matrix.
However, the IQ/A treatment showed a spherical network of martensite along the
ferrite/ferrite grain boundaries. The SQ yielded blockly and banded martensite
and ferrite morphology.
The experimental results show that API X52 (DP) steel with finely
dispersed microstructures (IQ/W) have higher Charpy impact properties and lower
ductile–brittle transition temperature (DBTT)than (DP) steel with
banded microstructures.
A carefully conducted comparison of fracture surfaces of the
representative specimens obtained after IQ and SQ treatments has been studied.

References

  • [1] R.O. Rocha, T.M.F. Melo, E.V. Pereloma, D.B. Santos, Microstructural evolution at the initial stages of continuous annealing cold rolled dual phases steel, Materials Science and Engineering: A, 391 ( 2005) 296-304.DOI:10.1016/j.msea.2004.08.081.
  • [2] M. Nishiyama, K. Park, N. Nakada, T. Tsuchiyama, Effect of the martensite distribution on the strain hardening and ductile fracture behaviors in dual-phase steel, Materials Science and Engineering: A, 604 (2014) 135-141.DOI:10.1016/j.msea.2014.02.058.
  • [3] A. Bag, K.K Ray, E.S. Dwarakadasa, Influence of martensite content and morphology on tensile and impact properties of high-martensite dual-phase steels, Metallurgical Transaction A 30 (1999) 1193–1202. DOI:10.1007/s11661-999-0269-4.
  • [4] H. Seyedrezai, A.K. Pilkey, J.D. Boyd, Effect of pre-ic annealing treatments on the final microstructure and work hardening behavior of a dual-phase steel, Materials Science and Engineering: A, 594 (2014) 178-188. DOI:10.1016/j.msea.2013.11.034.
Year 2017, Volume: 3 Issue: 2, 33 - 36, 01.11.2017

Abstract

References

  • [1] R.O. Rocha, T.M.F. Melo, E.V. Pereloma, D.B. Santos, Microstructural evolution at the initial stages of continuous annealing cold rolled dual phases steel, Materials Science and Engineering: A, 391 ( 2005) 296-304.DOI:10.1016/j.msea.2004.08.081.
  • [2] M. Nishiyama, K. Park, N. Nakada, T. Tsuchiyama, Effect of the martensite distribution on the strain hardening and ductile fracture behaviors in dual-phase steel, Materials Science and Engineering: A, 604 (2014) 135-141.DOI:10.1016/j.msea.2014.02.058.
  • [3] A. Bag, K.K Ray, E.S. Dwarakadasa, Influence of martensite content and morphology on tensile and impact properties of high-martensite dual-phase steels, Metallurgical Transaction A 30 (1999) 1193–1202. DOI:10.1007/s11661-999-0269-4.
  • [4] H. Seyedrezai, A.K. Pilkey, J.D. Boyd, Effect of pre-ic annealing treatments on the final microstructure and work hardening behavior of a dual-phase steel, Materials Science and Engineering: A, 594 (2014) 178-188. DOI:10.1016/j.msea.2013.11.034.
There are 4 citations in total.

Details

Journal Section ICCESEN-2016
Authors

Belkacem Boutessouna This is me

Publication Date November 1, 2017
Submission Date October 25, 2017
Acceptance Date October 28, 2017
Published in Issue Year 2017 Volume: 3 Issue: 2

Cite

APA Boutessouna, B. (2017). Effect of Microstructure on mechanical and Charpy impact properties offerrite-martensite dual phase API X52 pipeline Steel. International Journal of Computational and Experimental Science and Engineering, 3(2), 33-36.