TY - GEN
T1 - Tenaris new high steam Oxidation resistant, creep strength enhanced ferritic steel thor™115
AU - Minami, Y.
AU - Yamamoto, Y.
AU - Ortolani, M.
AU - Mariani, P.
AU - Pint, B.
N1 - Publisher Copyright:
Copyright © 2016 Electric Power Research Institute, Inc.
PY - 2016
Y1 - 2016
N2 - A new martcnsitic steel for power generation applications was developed: Tenaris High Oxidation Resistance (Thor™) is an evolution of the popular ASTM grade 91, offering improved steam oxidation resistance and better long-term microstructural stability, with equal or better creep strength. Thanks to its design philosophy, based on consolidated metallurgical knowledge of microstructural evolution mechanisms, and an extensive development performed in the last decade, Thor™ was engineered to overcome limitations in the use of ASTM grade 91, above 600 °C, particularly related to scale growth and liftoff. After laboratory development, Thor™ was successfully validated at the industrial level. Several heats up to 80 metric tons were cast at the steel shop, hot rolled to tubes of various dimensions, and heat treated. Trial heats underwent extensive characterization, including deep microstructural examination, mechanical testing in the as-received condition and after ageing, long-term creep and steam oxidation testing. This paper presents an overview of metallurgical characterization performed on laboratory and industrial Thor™ material, including microstructural examination and mechanical testing in timeindependent and time-dependent regimes. Data relevant to the behavior and the performance of Thor™ steel are also included.
AB - A new martcnsitic steel for power generation applications was developed: Tenaris High Oxidation Resistance (Thor™) is an evolution of the popular ASTM grade 91, offering improved steam oxidation resistance and better long-term microstructural stability, with equal or better creep strength. Thanks to its design philosophy, based on consolidated metallurgical knowledge of microstructural evolution mechanisms, and an extensive development performed in the last decade, Thor™ was engineered to overcome limitations in the use of ASTM grade 91, above 600 °C, particularly related to scale growth and liftoff. After laboratory development, Thor™ was successfully validated at the industrial level. Several heats up to 80 metric tons were cast at the steel shop, hot rolled to tubes of various dimensions, and heat treated. Trial heats underwent extensive characterization, including deep microstructural examination, mechanical testing in the as-received condition and after ageing, long-term creep and steam oxidation testing. This paper presents an overview of metallurgical characterization performed on laboratory and industrial Thor™ material, including microstructural examination and mechanical testing in timeindependent and time-dependent regimes. Data relevant to the behavior and the performance of Thor™ steel are also included.
UR - http://www.scopus.com/inward/record.url?scp=85018426803&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85018426803
T3 - Advances in Materials Technology for Fossil Power Plants - Proceedings from the 8th International Conference
SP - 877
EP - 887
BT - Advances in Materials Technology for Fossil Power Plants - Proceedings from the 8th International Conference
A2 - Shingledecker, John
A2 - Siefert, J.
A2 - Parker, Jonathan
PB - ASM International
T2 - 8th International Conference on Advances in Materials Technology for Fossil Power Plants
Y2 - 11 October 2016 through 14 October 2016
ER -