Effects of austenitization temperature on the microstructure of 15BCr30 and PL22 boron steels
This paper studies boron precipitation and segregation at austenitic grain boundaries for low carbon boron steels types: PL22 and 15BCr30. The following parameters were evaluated: percentage of martensite/bainite, size and nucleation sites of austenitic grains and precipitates sizes. Three austeniti...
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| Format: | Article |
| Language: | English |
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Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2013-04-01
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| Series: | Materials Research |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000400015&tlng=en |
| _version_ | 1818744997366726656 |
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| author | C. A. Suski C.A.S de Oliveira |
| author_facet | C. A. Suski C.A.S de Oliveira |
| author_sort | C. A. Suski |
| collection | DOAJ |
| description | This paper studies boron precipitation and segregation at austenitic grain boundaries for low carbon boron steels types: PL22 and 15BCr30. The following parameters were evaluated: percentage of martensite/bainite, size and nucleation sites of austenitic grains and precipitates sizes. Three austenitization temperatures were studied (870, 1050 and 1200 °C). The highest martensite percentage occurred for 1050 °C. Iron-borocarbides were detected at grain boundaries for all tested temperatures. At 870 °C the coarse iron-borocarbides are due to non-solubility and coalescence. The highest martensite percentage at 1050 °C is caused by the discrete precipitation of iron-borocarbides at austenitic grains boundaries. The discrete precipitation was due to the low non-equilibrium segregation of boron at grain boundaries. The low non-equilibrium segregation and the small grain size at 1050 °C reduce the total boron concentration at grain boundaries. |
| first_indexed | 2024-12-18T02:53:12Z |
| format | Article |
| id | doaj.art-2fb1ecadbcc6486a9ace7f259fcda983 |
| institution | Directory Open Access Journal |
| issn | 1516-1439 |
| language | English |
| last_indexed | 2024-12-18T02:53:12Z |
| publishDate | 2013-04-01 |
| publisher | Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) |
| record_format | Article |
| series | Materials Research |
| spelling | doaj.art-2fb1ecadbcc6486a9ace7f259fcda9832022-12-21T21:23:24ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392013-04-0116480381010.1590/S1516-14392013005000054Effects of austenitization temperature on the microstructure of 15BCr30 and PL22 boron steelsC. A. Suski0C.A.S de Oliveira1Instituto Federal de Santa CatarinaUniversidade Federal de Santa CatarinaThis paper studies boron precipitation and segregation at austenitic grain boundaries for low carbon boron steels types: PL22 and 15BCr30. The following parameters were evaluated: percentage of martensite/bainite, size and nucleation sites of austenitic grains and precipitates sizes. Three austenitization temperatures were studied (870, 1050 and 1200 °C). The highest martensite percentage occurred for 1050 °C. Iron-borocarbides were detected at grain boundaries for all tested temperatures. At 870 °C the coarse iron-borocarbides are due to non-solubility and coalescence. The highest martensite percentage at 1050 °C is caused by the discrete precipitation of iron-borocarbides at austenitic grains boundaries. The discrete precipitation was due to the low non-equilibrium segregation of boron at grain boundaries. The low non-equilibrium segregation and the small grain size at 1050 °C reduce the total boron concentration at grain boundaries.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000400015&tlng=eniron-borocarbideprecipitatesaustenitic grain |
| spellingShingle | C. A. Suski C.A.S de Oliveira Effects of austenitization temperature on the microstructure of 15BCr30 and PL22 boron steels Materials Research iron-borocarbide precipitates austenitic grain |
| title | Effects of austenitization temperature on the microstructure of 15BCr30 and PL22 boron steels |
| title_full | Effects of austenitization temperature on the microstructure of 15BCr30 and PL22 boron steels |
| title_fullStr | Effects of austenitization temperature on the microstructure of 15BCr30 and PL22 boron steels |
| title_full_unstemmed | Effects of austenitization temperature on the microstructure of 15BCr30 and PL22 boron steels |
| title_short | Effects of austenitization temperature on the microstructure of 15BCr30 and PL22 boron steels |
| title_sort | effects of austenitization temperature on the microstructure of 15bcr30 and pl22 boron steels |
| topic | iron-borocarbide precipitates austenitic grain |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000400015&tlng=en |
| work_keys_str_mv | AT casuski effectsofaustenitizationtemperatureonthemicrostructureof15bcr30andpl22boronsteels AT casdeoliveira effectsofaustenitizationtemperatureonthemicrostructureof15bcr30andpl22boronsteels |