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dc.contributor.author
Burgos, Ariel
dc.contributor.author
Svoboda, Hernán Gabriel
dc.contributor.author
Zhang, Zhuyao
dc.contributor.author
Surian, Estela Silvia
dc.date.available
2019-11-08T19:09:21Z
dc.date.issued
2018-12
dc.identifier.citation
Burgos, Ariel; Svoboda, Hernán Gabriel; Zhang, Zhuyao; Surian, Estela Silvia; Alternative PWHT to Improve High-Temperature Mechanical Properties of Advanced 9Cr Steel Welds; Springer; Journal of Materials Engineering and Performance; 27; 12; 12-2018; 6328-6338
dc.identifier.issn
1059-9495
dc.identifier.uri
http://hdl.handle.net/11336/88382
dc.description.abstract
Creep-resistant 9Cr steels are extremely important in thermal power generation industry due to their marked resistance to creep and corrosion. The weldability of these alloys is critical since they are used in welded construction equipment. The required mechanical properties are achieved after post-weld heat treatment. This study examined the effect of different post-weld heat treatments on microstructure and mechanical properties of creep strength-enhanced 9Cr steel welding deposits. It was obtained with an experimental flux-cored arc welding wire used under protective gas (Ar-20% CO2). The heat treatments used were: (1) tempering (760 °C × 2 h), (2) solubilizing (1050 °C × 1 h) + tempering (760 °C × 2 h) and (3) solubilizing (1150 °C × 1 h) + first tempering (660 °C × 3 h) + second tempering (660 °C × 3 h). All-weld metal chemical composition was analyzed, and hot tensile tests were carried out at different temperatures. Charpy-V impact tests and Vickers microhardness measurements were also performed. Microstructures were studied using x-ray diffraction and optical and scanning electron microscopy. In all cases, a martensitic matrix with intergranular and intra-granular precipitates was detected. In the as-welded condition, δ-ferrite was also found. Microhardness dropped, and the impact energy increased with post-weld heat treatments. The highest hot tensile strength result was achieved with samples submitted to austenization at 1150 °C and double tempering at 660 °C.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
CREEP STRENGTH-ENHANCED 9CR STEEL
dc.subject
FCAW
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MECHANICAL PROPERTIES
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MICROSTRUCTURE
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PWHT
dc.subject.classification
Ingeniería de los Materiales
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Ingeniería de los Materiales
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.title
Alternative PWHT to Improve High-Temperature Mechanical Properties of Advanced 9Cr Steel Welds
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-10-22T15:07:03Z
dc.journal.volume
27
dc.journal.number
12
dc.journal.pagination
6328-6338
dc.journal.pais
Alemania
dc.journal.ciudad
Berlin
dc.description.fil
Fil: Burgos, Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long". Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long"; Argentina
dc.description.fil
Fil: Svoboda, Hernán Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long". Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long"; Argentina
dc.description.fil
Fil: Zhang, Zhuyao. Metrode Products Ltd; Reino Unido
dc.description.fil
Fil: Surian, Estela Silvia. Instituto Argentino de Siderurgia; Argentina
dc.journal.title
Journal of Materials Engineering and Performance
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s11665-018-3736-5
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs11665-018-3736-5
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