Study on mechanical properties and microstructure of DP590 steel with different annealing process
Annealing process is critical to mechanical properties and microstructure of DP steel. For DP steel with strength grade of 590MPa, experiments with different combinations of intercritical annealing temperature and over-aging temperature were carried out during annealing. The tensile tests of the fin...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2021-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2021/21/e3sconf_aeecs2021_03009.pdf |
| _version_ | 1819048921855426560 |
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| author | Pan Libo Lin Chengjiang Zhou Wenqiang Zuo zhijiang |
| author_facet | Pan Libo Lin Chengjiang Zhou Wenqiang Zuo zhijiang |
| author_sort | Pan Libo |
| collection | DOAJ |
| description | Annealing process is critical to mechanical properties and microstructure of DP steel. For DP steel with strength grade of 590MPa, experiments with different combinations of intercritical annealing temperature and over-aging temperature were carried out during annealing. The tensile tests of the final products and nanohardness tests of different phases were made, and the microstructures were analyzed. The results indicated that higher intercritical annealing temperature was favorable to higher volume fraction of martensite and lower nanohardness of martensite with lower C density. The ultimate tensile strength increased monotonously with the volume fraction of martensite increasing. Higher over aging temperature would make martensite islands be partially resolved and carbides precipitate, which made lower volume fraction of martensite, and resulted in lower nanohardness of martensite. The revealed rules could provide important guide to control material properties of DP steel by manipulating annealing process. |
| first_indexed | 2024-12-21T11:23:57Z |
| format | Article |
| id | doaj.art-5b82086462d4411e9e45b129d2f7969e |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-12-21T11:23:57Z |
| publishDate | 2021-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-5b82086462d4411e9e45b129d2f7969e2022-12-21T19:05:42ZengEDP SciencesE3S Web of Conferences2267-12422021-01-012450300910.1051/e3sconf/202124503009e3sconf_aeecs2021_03009Study on mechanical properties and microstructure of DP590 steel with different annealing processPan Libo0Lin Chengjiang1Zhou Wenqiang2Zuo zhijiang3Insititute of Intelligent Manufacturing, Jianghan UniversityBaosteel Central Research InstituteBaosteel Central Research InstituteInsititute of Intelligent Manufacturing, Jianghan UniversityAnnealing process is critical to mechanical properties and microstructure of DP steel. For DP steel with strength grade of 590MPa, experiments with different combinations of intercritical annealing temperature and over-aging temperature were carried out during annealing. The tensile tests of the final products and nanohardness tests of different phases were made, and the microstructures were analyzed. The results indicated that higher intercritical annealing temperature was favorable to higher volume fraction of martensite and lower nanohardness of martensite with lower C density. The ultimate tensile strength increased monotonously with the volume fraction of martensite increasing. Higher over aging temperature would make martensite islands be partially resolved and carbides precipitate, which made lower volume fraction of martensite, and resulted in lower nanohardness of martensite. The revealed rules could provide important guide to control material properties of DP steel by manipulating annealing process.https://www.e3s-conferences.org/articles/e3sconf/pdf/2021/21/e3sconf_aeecs2021_03009.pdf |
| spellingShingle | Pan Libo Lin Chengjiang Zhou Wenqiang Zuo zhijiang Study on mechanical properties and microstructure of DP590 steel with different annealing process E3S Web of Conferences |
| title | Study on mechanical properties and microstructure of DP590 steel with different annealing process |
| title_full | Study on mechanical properties and microstructure of DP590 steel with different annealing process |
| title_fullStr | Study on mechanical properties and microstructure of DP590 steel with different annealing process |
| title_full_unstemmed | Study on mechanical properties and microstructure of DP590 steel with different annealing process |
| title_short | Study on mechanical properties and microstructure of DP590 steel with different annealing process |
| title_sort | study on mechanical properties and microstructure of dp590 steel with different annealing process |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2021/21/e3sconf_aeecs2021_03009.pdf |
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