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CAO Jianchun , LIU Qingyou , YONG Qilong , SUN Xinjun
钢铁研究学报(英文版)
Using thermomechanical simulation experiment, the kinetics of the isothermal transformation of austenite to ferrite in two HSLA lowcarbon steels containing different amounts of niobium was investigated under the conditions of both deformation and undeformation. The results of optical microstructure...
关键词: niobium;transformation;ferrite;austenite
LIU Qingyou , DENG Suhuai , SUN Xinjun , DONG Han , WENG Yuqing
Hot deformation processing was designed to study the effects of niobium (Nb) on DIFT. A prestrain of 051 at 880 ℃ for different isothermal time was used for adjusting the deformed austenite constitution and Nb existing state, followed by a secondary heavy deformation at 780 ℃ for inducing the ferri...
关键词: niobium;precipitation;recrystallization;deformation induced ferrite transformation
CHEN Xiaoping , WANG Xiangdong , LIU Qingyou , MI Fengyi , CHEN Ying , LI Yusu
The formation of protective rust layer of atmospheric corrosion resistance was discussed for weathering steel. The Rust layers of experimental steels were made by using an accelerating industrial atmospheric corrosion test of dry-wet cyclic immersion. Furthermore XRD were used to measure and analyze...
关键词: weathering steel;pH value;micro area;rust phase
YANG Jinghong , LIU Qingyou , SUN Dongbai , LI Xiangyang
Using methods of singlehit hot compression and stress relaxation after deformation on a Gleeble 1500D thermomechanical simulator, the curves of flow stress and stress relaxation, the microstructure and the recrystallization behavior of NbVTi high strength microalloyed low carbon pipeline steel we...
关键词: dynamic recrystallization;static recrystallization;microalloyed steel;austenite
