Dependence of Deformation Twinning on Grain Orientation and Texture Evolution of High Manganese TWIP Steels at Different Deformation Temperatures

钢铁研究学报(英文版), 2011, 18(11): 46-52.

Dependence of Deformation Twinning on Grain Orientation and Texture Evolution of High Manganese TWIP Steels at Different Deformation Temperatures

^1, , ^2, , ^3, , ^4,

1.School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

2.School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

3.School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

4.School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

基金项目: National Natural Science Foundation of China(50771019)

关键词：变形孪晶 , 变形温度 , 晶粒取向 , 锰钢 , 演变 , 纹理 , 高锰 , 低应变速率

Dependence of Deformation Twinning on Grain Orientation and Texture Evolution of High Manganese TWIP Steels at Different Deformation Temperatures

Keywords： high manganese steel , warm deformation , TWIP effect , texture ,

Mechanical properties, microstructure and texture evolution were studied in two tensile-deformed high manganese TWIP steels at different temperatures. Special attention was paid to the effects of deformation tempera- ture and grain orientation on twinning behavior. The results showed that, at --70 ℃ and at room temperature, both twins and hexagonal martensite were found in a lower manganese steel of 26Mn. With deformation temperature ris- ing, twins became less and they disappeared at 500 ℃. Strong 〈111〉 texture appeared at 300 ℃, while it weakened at 500 ℃ due to the low strain rate and higher stacking fault energy. EBSD measurement revealed the dependence of deformation twinning on grain orientation at all test temperatures.

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材料期刊网

Dependence of Deformation Twinning on Grain Orientation and Texture Evolution of High Manganese TWIP Steels at Different Deformation Temperatures

Dependence of Deformation Twinning on Grain Orientation and Texture Evolution of High Manganese TWIP Steels at Different Deformation Temperatures

参考文献