1. National Engineering Research Center for Advanced Rolling Technology, University of Science and Technology Beijing, Beijing 100083, China 2. Beijing Laboratory of Metallic Materials and Processing for Modern Transportation, Beijing 100083, China 3. Baotai Group Co. , Ltd. , Baoji 721014, Shaanxi, China
Effect of Nb on Microstructure and Mechanical Properties in Non-magnetic High Manganese Steel
1. National Engineering Research Center for Advanced Rolling Technology, University of Science and Technology Beijing, Beijing 100083, China 2. Beijing Laboratory of Metallic Materials and Processing for Modern Transportation, Beijing 100083, China 3. Baotai Group Co. , Ltd. , Baoji 721014, Shaanxi, China
ժҪ Microstructure and mechanical properties of two kinds of non-magnetic high manganese steels with and without Nb addition which experienced the same rolling and heating treatment were investigated by means of scanning electron microscopy, electron back-scattered diffraction, transmission electron microscopy, X-ray diffraction and tensile test. It was found that the microstructure of the high manganese steel was refined by the Nb addition. Moreover, steel with Nb addition has a higher stacking fault energy which favors the deformation twinning. Twinning is the most important deformation mechanism in the Nb-bearing steel. Therefore, steel with Nb addition has much higher strength and higher plasticity. The product of tensile strength and total elongation exceeds 61. 8 GPa��%. In addition, steel with Nb addition also has excellent non-magnetic property.
Abstract��Microstructure and mechanical properties of two kinds of non-magnetic high manganese steels with and without Nb addition which experienced the same rolling and heating treatment were investigated by means of scanning electron microscopy, electron back-scattered diffraction, transmission electron microscopy, X-ray diffraction and tensile test. It was found that the microstructure of the high manganese steel was refined by the Nb addition. Moreover, steel with Nb addition has a higher stacking fault energy which favors the deformation twinning. Twinning is the most important deformation mechanism in the Nb-bearing steel. Therefore, steel with Nb addition has much higher strength and higher plasticity. The product of tensile strength and total elongation exceeds 61. 8 GPa��%. In addition, steel with Nb addition also has excellent non-magnetic property.
Jia-li CAO,,Ai-min ZHAO,,Ji-xiong LIU,Jian-guo HE,,Ran DING,. Effect of Nb on Microstructure and Mechanical Properties in Non-magnetic High Manganese Steel[J]. �й������ڿ���, 2014, 21(6): 600-605.
Jia-li CAO,,Ai-min ZHAO,,Ji-xiong LIU,Jian-guo HE,,Ran DING,. Effect of Nb on Microstructure and Mechanical Properties in Non-magnetic High Manganese Steel. Chinese Journal of Iron and Steel, 2014, 21(6): 600-605.
2014, Vol. 21 
