STUDY OF AGING EFFECTS IN 2205 DUPLEX STAINLESS STEEL USING THERMOELECTRIC POWER MEASUREMENT

Journal Article · Mon Feb 22 00:00:00 EST 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3362222· OSTI ID:21371010

Lara, N; Ruiz, A; Carreon, H; Medina, A ^[1]; Sanchez, A ^[2]

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1. NDE Group, Instituto de Investigaciones Metalurgicas, UMSNH (Mexico)
2. Department of Mechanical Engineering, UMSNH (Mexico)

Thermoelectric power (TEP) measurements have been used as an effective method for evaluating the metallurgical state of various alloys. In the steel industry, some fabrication processes promote phase transformation and second phase precipitations which affect the material properties. Assessment of mechanical properties is critical in order to ensure quality of components. This work was conducted in order to evaluate the influence of the aging state of 2205 duplex stainless steel on TEP values. Commercial 2205 duplex steel was isothermally aged at 650 deg. C 700 deg. C and 900 deg. C at different aging times. TEP measurement technique was applied as a non destructive assessment technique to characterize the aging kinetics of the aged 2205 duplex stainless steel, hardness Rockwell (RC) and Charpy impact test were preformed to observe the effect of aging time on the specimens. Metallographic analysis was used to monitor phase transformation and sigma phase precipitation caused by the spinodal decomposition process of ferrite into secondary austenite and sigma phase. Results indicate that that the TEP is sensitive to gradual microstructural changes produced by the aging treatments.

• OSTI ID: 21371010
• Journal Information: AIP Conference Proceedings, Vol. 1211, Issue 1; Conference: Review of progress in quantitative nondestructive evaluation, Kingston, RI (United States), 26-31 Jul 2009; Other Information: DOI: 10.1063/1.3362222; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AGING
AUSTENITE
FERRITE
HARDNESS
IMPACT TESTS
MICROSTRUCTURE
NONDESTRUCTIVE TESTING
PHASE TRANSFORMATIONS
PRECIPITATION
SCANNING ELECTRON MICROSCOPY
STAINLESS STEELS
TEMPERATURE DEPENDENCE
THERMOELECTRIC PROPERTIES
ALLOYS
CARBON ADDITIONS
ELECTRICAL PROPERTIES
ELECTRON MICROSCOPY
HIGH ALLOY STEELS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS TESTING
MECHANICAL PROPERTIES
MECHANICAL TESTS
MICROSCOPY
PHYSICAL PROPERTIES
SEPARATION PROCESSES
STEELS
TESTING
TRANSITION ELEMENT ALLOYS