The Effect of Deformation Temperature on the Deformation Mechanism of a Medium-Mn Advanced High-Strength Steel (AHSS)
The deformation mechanism of a medium-Mn advanced high strength steel (AHSS) over a temperature range from 25 °C to 400 °C has been studied. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to characterize the microstructures of specimens after the tensile test...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-02-01
|
| Series: | Crystals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4352/13/2/328 |
| _version_ | 1797621581986398208 |
|---|---|
| author | Po-Chung Chen Tzu-Ting Peng Yu-Cheng Chan Jun-Ming Chen Chih-Pu Chang |
| author_facet | Po-Chung Chen Tzu-Ting Peng Yu-Cheng Chan Jun-Ming Chen Chih-Pu Chang |
| author_sort | Po-Chung Chen |
| collection | DOAJ |
| description | The deformation mechanism of a medium-Mn advanced high strength steel (AHSS) over a temperature range from 25 °C to 400 °C has been studied. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to characterize the microstructures of specimens after the tensile test at different temperatures. Four deformation mechanisms were found, namely deformation-induced martensitic (DIM) transformation, deformation-induced bainitic (DIB) transformation, deformation twinning and dislocation glide. Among these deformation mechanisms, DIM and DIB were very effective mechanisms to contribute work hardening. The product of ultimate tensile strength (UTS) and total elongation (TEL) of the AHSS reached a value higher than 65 GPa%, when these two mechanisms occurred. The highest UTS × TEL value of 84 GPa% was obtained at 150 °C. From the results of the present research, it is suggested that warm working is a good processing route for obtaining a combination of high strength and high ductility in medium-Mn AHSS. |
| first_indexed | 2024-03-11T08:58:02Z |
| format | Article |
| id | doaj.art-8a2ef4ac341548618e966c106615b151 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-11T08:58:02Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-8a2ef4ac341548618e966c106615b1512023-11-16T19:56:42ZengMDPI AGCrystals2073-43522023-02-0113232810.3390/cryst13020328The Effect of Deformation Temperature on the Deformation Mechanism of a Medium-Mn Advanced High-Strength Steel (AHSS)Po-Chung Chen0Tzu-Ting Peng1Yu-Cheng Chan2Jun-Ming Chen3Chih-Pu Chang4Research Center for Physical Properties and Microstructure of Metals, Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung 80424, TaiwanResearch Center for Physical Properties and Microstructure of Metals, Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung 80424, TaiwanResearch Center for Physical Properties and Microstructure of Metals, Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung 80424, TaiwanResearch Center for Physical Properties and Microstructure of Metals, Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung 80424, TaiwanResearch Center for Physical Properties and Microstructure of Metals, Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung 80424, TaiwanThe deformation mechanism of a medium-Mn advanced high strength steel (AHSS) over a temperature range from 25 °C to 400 °C has been studied. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to characterize the microstructures of specimens after the tensile test at different temperatures. Four deformation mechanisms were found, namely deformation-induced martensitic (DIM) transformation, deformation-induced bainitic (DIB) transformation, deformation twinning and dislocation glide. Among these deformation mechanisms, DIM and DIB were very effective mechanisms to contribute work hardening. The product of ultimate tensile strength (UTS) and total elongation (TEL) of the AHSS reached a value higher than 65 GPa%, when these two mechanisms occurred. The highest UTS × TEL value of 84 GPa% was obtained at 150 °C. From the results of the present research, it is suggested that warm working is a good processing route for obtaining a combination of high strength and high ductility in medium-Mn AHSS.https://www.mdpi.com/2073-4352/13/2/328deformation mechanismdeformation-induced martensitedeformation-induced bainitetwinmedium-Mn steelAHSS |
| spellingShingle | Po-Chung Chen Tzu-Ting Peng Yu-Cheng Chan Jun-Ming Chen Chih-Pu Chang The Effect of Deformation Temperature on the Deformation Mechanism of a Medium-Mn Advanced High-Strength Steel (AHSS) Crystals deformation mechanism deformation-induced martensite deformation-induced bainite twin medium-Mn steel AHSS |
| title | The Effect of Deformation Temperature on the Deformation Mechanism of a Medium-Mn Advanced High-Strength Steel (AHSS) |
| title_full | The Effect of Deformation Temperature on the Deformation Mechanism of a Medium-Mn Advanced High-Strength Steel (AHSS) |
| title_fullStr | The Effect of Deformation Temperature on the Deformation Mechanism of a Medium-Mn Advanced High-Strength Steel (AHSS) |
| title_full_unstemmed | The Effect of Deformation Temperature on the Deformation Mechanism of a Medium-Mn Advanced High-Strength Steel (AHSS) |
| title_short | The Effect of Deformation Temperature on the Deformation Mechanism of a Medium-Mn Advanced High-Strength Steel (AHSS) |
| title_sort | effect of deformation temperature on the deformation mechanism of a medium mn advanced high strength steel ahss |
| topic | deformation mechanism deformation-induced martensite deformation-induced bainite twin medium-Mn steel AHSS |
| url | https://www.mdpi.com/2073-4352/13/2/328 |
| work_keys_str_mv | AT pochungchen theeffectofdeformationtemperatureonthedeformationmechanismofamediummnadvancedhighstrengthsteelahss AT tzutingpeng theeffectofdeformationtemperatureonthedeformationmechanismofamediummnadvancedhighstrengthsteelahss AT yuchengchan theeffectofdeformationtemperatureonthedeformationmechanismofamediummnadvancedhighstrengthsteelahss AT junmingchen theeffectofdeformationtemperatureonthedeformationmechanismofamediummnadvancedhighstrengthsteelahss AT chihpuchang theeffectofdeformationtemperatureonthedeformationmechanismofamediummnadvancedhighstrengthsteelahss AT pochungchen effectofdeformationtemperatureonthedeformationmechanismofamediummnadvancedhighstrengthsteelahss AT tzutingpeng effectofdeformationtemperatureonthedeformationmechanismofamediummnadvancedhighstrengthsteelahss AT yuchengchan effectofdeformationtemperatureonthedeformationmechanismofamediummnadvancedhighstrengthsteelahss AT junmingchen effectofdeformationtemperatureonthedeformationmechanismofamediummnadvancedhighstrengthsteelahss AT chihpuchang effectofdeformationtemperatureonthedeformationmechanismofamediummnadvancedhighstrengthsteelahss |