The Varying Effects of Uniaxial Compressive Stress on the Bainitic Transformation under Different Austenitization Temperatures
In this study, thermal simulation experiments under different austenitization temperatures and different stress states were conducted. High-temperature laser scanning confocal microscopy (LSCM), thermal dilatometry, and scanning electron microscope (SEM) were used to quantitatively investigate the e...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2016-05-01
|
| Series: | Metals |
| Subjects: | |
| Online Access: | http://www.mdpi.com/2075-4701/6/5/119 |
| _version_ | 1811239087490727936 |
|---|---|
| author | Mingxing Zhou Guang Xu Li Wang Qing Yuan |
| author_facet | Mingxing Zhou Guang Xu Li Wang Qing Yuan |
| author_sort | Mingxing Zhou |
| collection | DOAJ |
| description | In this study, thermal simulation experiments under different austenitization temperatures and different stress states were conducted. High-temperature laser scanning confocal microscopy (LSCM), thermal dilatometry, and scanning electron microscope (SEM) were used to quantitatively investigate the effects of the uniaxial compressive stress on bainitic transformation at 330 °C following different austenitization temperatures. The transformation plasticity was also analyzed. It was found that the promotion degree of stress on bainitic transformation increases with the austenitization temperature due to larger prior austenite grain size as well as stronger promoting effect of mechanical driving force on selected variant growth at higher austenitization temperatures. The grain size and the yield strength of prior austenite are other important factors which influence the promotion degree of stress on bainitic transformation, besides the mechanical driving force provided by the stress. Moreover, the transformation plasticity increases with the austenitization temperature. |
| first_indexed | 2024-04-12T12:53:42Z |
| format | Article |
| id | doaj.art-4a37b0367eea42ae8bd54d02e6669d23 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-04-12T12:53:42Z |
| publishDate | 2016-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-4a37b0367eea42ae8bd54d02e6669d232022-12-22T03:32:23ZengMDPI AGMetals2075-47012016-05-016511910.3390/met6050119met6050119The Varying Effects of Uniaxial Compressive Stress on the Bainitic Transformation under Different Austenitization TemperaturesMingxing Zhou0Guang Xu1Li Wang2Qing Yuan3The State Key Laboratory of Refractories and Metallurgy, Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, ChinaThe State Key Laboratory of Refractories and Metallurgy, Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, ChinaState Key Laboratory of Development and Application Technology of Automotive Steels (Baosteel Group), Shanghai 201900, ChinaThe State Key Laboratory of Refractories and Metallurgy, Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, ChinaIn this study, thermal simulation experiments under different austenitization temperatures and different stress states were conducted. High-temperature laser scanning confocal microscopy (LSCM), thermal dilatometry, and scanning electron microscope (SEM) were used to quantitatively investigate the effects of the uniaxial compressive stress on bainitic transformation at 330 °C following different austenitization temperatures. The transformation plasticity was also analyzed. It was found that the promotion degree of stress on bainitic transformation increases with the austenitization temperature due to larger prior austenite grain size as well as stronger promoting effect of mechanical driving force on selected variant growth at higher austenitization temperatures. The grain size and the yield strength of prior austenite are other important factors which influence the promotion degree of stress on bainitic transformation, besides the mechanical driving force provided by the stress. Moreover, the transformation plasticity increases with the austenitization temperature.http://www.mdpi.com/2075-4701/6/5/119bainitic transformationstresstransformation plasticityaustenitization temperature |
| spellingShingle | Mingxing Zhou Guang Xu Li Wang Qing Yuan The Varying Effects of Uniaxial Compressive Stress on the Bainitic Transformation under Different Austenitization Temperatures Metals bainitic transformation stress transformation plasticity austenitization temperature |
| title | The Varying Effects of Uniaxial Compressive Stress on the Bainitic Transformation under Different Austenitization Temperatures |
| title_full | The Varying Effects of Uniaxial Compressive Stress on the Bainitic Transformation under Different Austenitization Temperatures |
| title_fullStr | The Varying Effects of Uniaxial Compressive Stress on the Bainitic Transformation under Different Austenitization Temperatures |
| title_full_unstemmed | The Varying Effects of Uniaxial Compressive Stress on the Bainitic Transformation under Different Austenitization Temperatures |
| title_short | The Varying Effects of Uniaxial Compressive Stress on the Bainitic Transformation under Different Austenitization Temperatures |
| title_sort | varying effects of uniaxial compressive stress on the bainitic transformation under different austenitization temperatures |
| topic | bainitic transformation stress transformation plasticity austenitization temperature |
| url | http://www.mdpi.com/2075-4701/6/5/119 |
| work_keys_str_mv | AT mingxingzhou thevaryingeffectsofuniaxialcompressivestressonthebainitictransformationunderdifferentaustenitizationtemperatures AT guangxu thevaryingeffectsofuniaxialcompressivestressonthebainitictransformationunderdifferentaustenitizationtemperatures AT liwang thevaryingeffectsofuniaxialcompressivestressonthebainitictransformationunderdifferentaustenitizationtemperatures AT qingyuan thevaryingeffectsofuniaxialcompressivestressonthebainitictransformationunderdifferentaustenitizationtemperatures AT mingxingzhou varyingeffectsofuniaxialcompressivestressonthebainitictransformationunderdifferentaustenitizationtemperatures AT guangxu varyingeffectsofuniaxialcompressivestressonthebainitictransformationunderdifferentaustenitizationtemperatures AT liwang varyingeffectsofuniaxialcompressivestressonthebainitictransformationunderdifferentaustenitizationtemperatures AT qingyuan varyingeffectsofuniaxialcompressivestressonthebainitictransformationunderdifferentaustenitizationtemperatures |