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

作者：Fang Xiu hui^*; Yang Ping; Lu Fa yun; Meng Li

来源：Journal of Iron and Steel Research International, 2011, 18(11): 46-52.

• 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 temperature and grain orientation on twinning behavior. The results showed that, at -70 degrees C and at room temperature, both twins and hexagonal martensite were found in a lower manganese steel of 26Mn. With deformation temperature rising, twins became less and they disappeared at 500 degrees C. Strong < 111 > texture appeared at 300 degrees C, while it weakened at 500 degrees C 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.

• 出版日期2011-11
• 单位北京科技大学