Effect of Annealing and Hot Rolling on Grain Boundary Segregation of Arsenic in an Mn-Steel Microalloyed by Ti,Cr and Nb
ZHU Yuan-zhi1,2,LI Bing-liang2,LIU Ping2
1. College of Mechanical Electronical and Engineering, North China University of Technology, Beijing 100144, China 2. Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China
Effect of Annealing and Hot Rolling on Grain Boundary Segregation of Arsenic in an Mn-Steel Microalloyed by Ti,Cr and Nb
ZHU Yuan-zhi1,2,LI Bing-liang2,LIU Ping2
1. College of Mechanical Electronical and Engineering, North China University of Technology, Beijing 100144, China 2. Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China
ժҪ Steel samples with size of 10 mm��10 mm��5 mm were cut down from a hot-rolled Mn-steel microalloyed by Ti, Cr and Nb and produced by compact strip production (CSP) technology. The samples were annealed at 950 �� for different time firstly, and then hot rolled or cooled in the air, in water and in furnace, respectively. Auger electron spectroscopy (AES) was used to study the effects of annealing and hot rolling on the segregation of arsenic at grain boundary (GB) in the steel. The results indicated that a higher content of arsenic was found at grain boundaries than in the matrix when the steel was annealed at 950 �� for 2 h and then cooled to room temperature by water quenching. But the content of arsenic at grain boundaries was similar to that in the matrix when the steel was annealed at 950 �� for 2 h and then cooled to room temperature by furnace cooling. A longer holding time, such as 12 h and 36 h at 950 ��, resulted in a similar arsenic content at grain boundaries to that in the matrix of the steels. Hot rolling led to a similar content of arsenic at grain boundaries and within grains in the steels as well.
Abstract��Steel samples with size of 10 mm��10 mm��5 mm were cut down from a hot-rolled Mn-steel microalloyed by Ti, Cr and Nb and produced by compact strip production (CSP) technology. The samples were annealed at 950 �� for different time firstly, and then hot rolled or cooled in the air, in water and in furnace, respectively. Auger electron spectroscopy (AES) was used to study the effects of annealing and hot rolling on the segregation of arsenic at grain boundary (GB) in the steel. The results indicated that a higher content of arsenic was found at grain boundaries than in the matrix when the steel was annealed at 950 �� for 2 h and then cooled to room temperature by water quenching. But the content of arsenic at grain boundaries was similar to that in the matrix when the steel was annealed at 950 �� for 2 h and then cooled to room temperature by furnace cooling. A longer holding time, such as 12 h and 36 h at 950 ��, resulted in a similar arsenic content at grain boundaries to that in the matrix of the steels. Hot rolling led to a similar content of arsenic at grain boundaries and within grains in the steels as well.
ZHU Yuan-zhi,,LI Bing-liang,LIU Ping. Effect of Annealing and Hot Rolling on Grain Boundary Segregation of Arsenic in an Mn-Steel Microalloyed by Ti,Cr and Nb[J]. �й������ڿ���, 2013, 20(9): 67-72.
ZHU Yuan-zhi,,LI Bing-liang,LIU Ping. Effect of Annealing and Hot Rolling on Grain Boundary Segregation of Arsenic in an Mn-Steel Microalloyed by Ti,Cr and Nb. Chinese Journal of Iron and Steel, 2013, 20(9): 67-72.
2013, Vol. 20 
