Effect of copper on microstructure, recrystallization and precipitation kinetics in strip cast low carbon steel
Strip cast samples with different copper content have been developed by simulated direct strip casting. The as-cast microstructures were characterized by optical microscopy and electron microscopy. The microstructures mainly consisted of polygonal ferrite and Widmanstatten ferrite in as cast conditi...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/ab7310 |
| _version_ | 1797746457047990272 |
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| author | Prabhukumar Sellamuthu Peter Hodgson Nicole Stanford |
| author_facet | Prabhukumar Sellamuthu Peter Hodgson Nicole Stanford |
| author_sort | Prabhukumar Sellamuthu |
| collection | DOAJ |
| description | Strip cast samples with different copper content have been developed by simulated direct strip casting. The as-cast microstructures were characterized by optical microscopy and electron microscopy. The microstructures mainly consisted of polygonal ferrite and Widmanstatten ferrite in as cast condition. X-ray diffraction showed that the copper was in solid solution in the as-cast condition. It was found that the equivalent tensile yield and maximum strengths, both increased with an increase in copper content. The strip cast samples were cold rolled to 70% reduction and then annealed isothermally at 600, 650 and 700 °C for various times to study the recrystallization and precipitation kinetics. After annealing, the hardness and strength were found to be decreased due to recovery and recrystallization. It was found that an increase in copper content retarded the recrystallization kinetics. During annealing, precipitation of copper was observed. The copper precipitates were bimodal with respect to particle size and distribution. The size and spacing of the particles were measured and the Zener pinning effect of the particles was calculated. High pinning forces of more than 2 MPa were predicted, and this correlated well with the observed decrease in recrystallization kinetics. |
| first_indexed | 2024-03-12T15:38:02Z |
| format | Article |
| id | doaj.art-289ed2c06e4a4c5981d64e6e639e0f10 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:38:02Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-289ed2c06e4a4c5981d64e6e639e0f102023-08-09T16:07:09ZengIOP PublishingMaterials Research Express2053-15912020-01-016121265j510.1088/2053-1591/ab7310Effect of copper on microstructure, recrystallization and precipitation kinetics in strip cast low carbon steelPrabhukumar Sellamuthu0https://orcid.org/0000-0003-3735-8236Peter Hodgson1Nicole Stanford2Department of Mechanical Engineering, Vel Tech Rangarajan Dr Sagunthala R&D Institute of Science and Technology, Chennai—600 062, Tamil Nadu, IndiaInstitute for Frontier Materials, Deakin University , 75 Pigdons Road, Waurn Ponds, VIC 3216, AustraliaInstitute for Frontier Materials, Deakin University , 75 Pigdons Road, Waurn Ponds, VIC 3216, AustraliaStrip cast samples with different copper content have been developed by simulated direct strip casting. The as-cast microstructures were characterized by optical microscopy and electron microscopy. The microstructures mainly consisted of polygonal ferrite and Widmanstatten ferrite in as cast condition. X-ray diffraction showed that the copper was in solid solution in the as-cast condition. It was found that the equivalent tensile yield and maximum strengths, both increased with an increase in copper content. The strip cast samples were cold rolled to 70% reduction and then annealed isothermally at 600, 650 and 700 °C for various times to study the recrystallization and precipitation kinetics. After annealing, the hardness and strength were found to be decreased due to recovery and recrystallization. It was found that an increase in copper content retarded the recrystallization kinetics. During annealing, precipitation of copper was observed. The copper precipitates were bimodal with respect to particle size and distribution. The size and spacing of the particles were measured and the Zener pinning effect of the particles was calculated. High pinning forces of more than 2 MPa were predicted, and this correlated well with the observed decrease in recrystallization kinetics.https://doi.org/10.1088/2053-1591/ab7310microstructureshear punch testcopperrecrystallizationprecipitationstrip casting |
| spellingShingle | Prabhukumar Sellamuthu Peter Hodgson Nicole Stanford Effect of copper on microstructure, recrystallization and precipitation kinetics in strip cast low carbon steel Materials Research Express microstructure shear punch test copper recrystallization precipitation strip casting |
| title | Effect of copper on microstructure, recrystallization and precipitation kinetics in strip cast low carbon steel |
| title_full | Effect of copper on microstructure, recrystallization and precipitation kinetics in strip cast low carbon steel |
| title_fullStr | Effect of copper on microstructure, recrystallization and precipitation kinetics in strip cast low carbon steel |
| title_full_unstemmed | Effect of copper on microstructure, recrystallization and precipitation kinetics in strip cast low carbon steel |
| title_short | Effect of copper on microstructure, recrystallization and precipitation kinetics in strip cast low carbon steel |
| title_sort | effect of copper on microstructure recrystallization and precipitation kinetics in strip cast low carbon steel |
| topic | microstructure shear punch test copper recrystallization precipitation strip casting |
| url | https://doi.org/10.1088/2053-1591/ab7310 |
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