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

Belkacem BOUTESSOUNA

Article Details

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

Authors:

Belkacem BOUTESSOUNA

Publisher:

İskender AKKURT

Journal:

International Journal of Computational and Experimental Science and Engineering 2017 Vol.3 Issue 2, pp.33-36

Document Type:

Article

Publication Date:

10/2017

Document Language:

Turkish

Document ID (Org No.):

2000477334

Frequency:

Tri-annual

eISSN:

2149-9144

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.

Article Details

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

Authors: Belkacem BOUTESSOUNA

Publisher: İskender AKKURT

Journal: International Journal of Computational and Experimental Science and Engineering 2017 Vol.3 Issue 2, pp.33-36

Document Type: Article

Publication Date: 10/2017

Document Language: Turkish

Document ID (Org No.): 2000477334

Frequency: Tri-annual

eISSN: 2149-9144

Issues

Authors:

Belkacem BOUTESSOUNA

Publisher:

İskender AKKURT

Journal:

International Journal of Computational and Experimental Science and Engineering 2017 Vol.3 Issue 2, pp.33-36

Document Type:

Article

Publication Date:

10/2017

Document Language:

Turkish

Document ID (Org No.):

2000477334

Frequency:

Tri-annual

eISSN:

2149-9144