Microstructural Development in a TRIP-780 Steel Joined by Friction Stir Welding (FSW): Quantitative Evaluations and Comparisons with EBSD Predictions
The present work describes the effect of FSW on the result microstructure in the stir zone (SZ), thermo-mechanically affected zone (TMAZ), heat affected zone (HAZ) and base metal (BM) of a TRIP-780 steel. X-ray diffraction (XRD), optical microscopy (OM) and EBSD were used for determinations retaine...
| Autores principales: | , , , , |
|---|---|
| Formato: | Artículo |
| Lenguaje: | inglés |
| Publicado: |
2016
|
| Acceso en línea: | http://eprints.uanl.mx/14815/1/42.pdf |
| _version_ | 1824414150302892032 |
|---|---|
| author | Medina, Gladys Perez Ferreira, Hugo Lopez Robledo, Patricia Zambrano Pérez, Argelia Miranda Valdés, Felipe A. Reyes |
| author_facet | Medina, Gladys Perez Ferreira, Hugo Lopez Robledo, Patricia Zambrano Pérez, Argelia Miranda Valdés, Felipe A. Reyes |
| author_sort | Medina, Gladys Perez |
| collection | Repositorio Institucional |
| description | The present work describes the effect of FSW on the result microstructure in the stir zone (SZ), thermo-mechanically affected zone (TMAZ), heat affected zone (HAZ) and base metal (BM) of a TRIP-780 steel. X-ray diffraction (XRD), optical microscopy (OM) and
EBSD were used for determinations retained austenite (RA) in the SZ, It was found that the amount of RA developed in SZ was relatively large, (approximately 11% to 15%). In addition, recrystallization and the formation of a grain texture were resolved using EBSD. During FSW,
the SZ experienced severe plastic deformation which lead to an increase in the temperature and consequently grain recrystallization. Moreover, it was found that the recrystallized grain structure and relatively high martensite levels developed in the SZ lead to a significant drop in the mechanical properties of the steel. In addition, microhardness profiles of the welded
regions indicated that the hardness in both the SZ and TMAZ were relatively elevated confirming the development of martensite in these regions. In particular, to evaluate the mechanical strength of the weld, lap shear tensile test was conducted; exhibited the fracture zone in the SZ with shear fracture with uniformly distributed elongation shear dimples. |
| format | Article |
| id | eprints-14815 |
| institution | UANL |
| language | English |
| publishDate | 2016 |
| record_format | eprints |
| spelling | eprints-148152019-06-10T14:41:58Z http://eprints.uanl.mx/14815/ Microstructural Development in a TRIP-780 Steel Joined by Friction Stir Welding (FSW): Quantitative Evaluations and Comparisons with EBSD Predictions Medina, Gladys Perez Ferreira, Hugo Lopez Robledo, Patricia Zambrano Pérez, Argelia Miranda Valdés, Felipe A. Reyes The present work describes the effect of FSW on the result microstructure in the stir zone (SZ), thermo-mechanically affected zone (TMAZ), heat affected zone (HAZ) and base metal (BM) of a TRIP-780 steel. X-ray diffraction (XRD), optical microscopy (OM) and EBSD were used for determinations retained austenite (RA) in the SZ, It was found that the amount of RA developed in SZ was relatively large, (approximately 11% to 15%). In addition, recrystallization and the formation of a grain texture were resolved using EBSD. During FSW, the SZ experienced severe plastic deformation which lead to an increase in the temperature and consequently grain recrystallization. Moreover, it was found that the recrystallized grain structure and relatively high martensite levels developed in the SZ lead to a significant drop in the mechanical properties of the steel. In addition, microhardness profiles of the welded regions indicated that the hardness in both the SZ and TMAZ were relatively elevated confirming the development of martensite in these regions. In particular, to evaluate the mechanical strength of the weld, lap shear tensile test was conducted; exhibited the fracture zone in the SZ with shear fracture with uniformly distributed elongation shear dimples. 2016 Article PeerReviewed text en cc_by_nc_nd http://eprints.uanl.mx/14815/1/42.pdf http://eprints.uanl.mx/14815/1.haspreviewThumbnailVersion/42.pdf Medina, Gladys Perez y Ferreira, Hugo Lopez y Robledo, Patricia Zambrano y Pérez, Argelia Miranda y Valdés, Felipe A. Reyes (2016) Microstructural Development in a TRIP-780 Steel Joined by Friction Stir Welding (FSW): Quantitative Evaluations and Comparisons with EBSD Predictions. Soldagem & Inspeção, 21 (2). pp. 146-155. ISSN 0104-9224 http://doi.org/10.1590/0104-9224/SI2102.04 doi:10.1590/0104-9224/SI2102.04 |
| spellingShingle | Medina, Gladys Perez Ferreira, Hugo Lopez Robledo, Patricia Zambrano Pérez, Argelia Miranda Valdés, Felipe A. Reyes Microstructural Development in a TRIP-780 Steel Joined by Friction Stir Welding (FSW): Quantitative Evaluations and Comparisons with EBSD Predictions |
| thumbnail | https://rediab.uanl.mx/themes/sandal5/images/online.png |
| title | Microstructural Development in a TRIP-780 Steel Joined by Friction Stir Welding (FSW): Quantitative Evaluations and Comparisons with EBSD Predictions |
| title_full | Microstructural Development in a TRIP-780 Steel Joined by Friction Stir Welding (FSW): Quantitative Evaluations and Comparisons with EBSD Predictions |
| title_fullStr | Microstructural Development in a TRIP-780 Steel Joined by Friction Stir Welding (FSW): Quantitative Evaluations and Comparisons with EBSD Predictions |
| title_full_unstemmed | Microstructural Development in a TRIP-780 Steel Joined by Friction Stir Welding (FSW): Quantitative Evaluations and Comparisons with EBSD Predictions |
| title_short | Microstructural Development in a TRIP-780 Steel Joined by Friction Stir Welding (FSW): Quantitative Evaluations and Comparisons with EBSD Predictions |
| title_sort | microstructural development in a trip 780 steel joined by friction stir welding fsw quantitative evaluations and comparisons with ebsd predictions |
| url | http://eprints.uanl.mx/14815/1/42.pdf |
| work_keys_str_mv | AT medinagladysperez microstructuraldevelopmentinatrip780steeljoinedbyfrictionstirweldingfswquantitativeevaluationsandcomparisonswithebsdpredictions AT ferreirahugolopez microstructuraldevelopmentinatrip780steeljoinedbyfrictionstirweldingfswquantitativeevaluationsandcomparisonswithebsdpredictions AT robledopatriciazambrano microstructuraldevelopmentinatrip780steeljoinedbyfrictionstirweldingfswquantitativeevaluationsandcomparisonswithebsdpredictions AT perezargeliamiranda microstructuraldevelopmentinatrip780steeljoinedbyfrictionstirweldingfswquantitativeevaluationsandcomparisonswithebsdpredictions AT valdesfelipeareyes microstructuraldevelopmentinatrip780steeljoinedbyfrictionstirweldingfswquantitativeevaluationsandcomparisonswithebsdpredictions |