Change in dislocation configuration of deformed Fe-Ni-Nb-Ti-C-B alloy during stress relaxation  

作　　者：Shaoqiang Yuan, Shanwu Yang, Wenjin Nie, and Xinlai He Department of Materials Physics, University of Science and Technology Beijing, Beijing 100083, China Tangshan College, Tangshan 063000, China 

出　　处：《Journal of University of Science and Technology Beijing》2003年第3期76-78,共3页北京科技大学学报（英文版）

基　　金：The work was financially supported by National Key Basic Research and Development Program of China(No.G1998061507).]

摘　　要：Transmission electron microscopy (TEM) was applied to investigate theevolution of dislocation configuration and strain induced precipitation behavior during relaxationprocess after deformation in Fe-Ni-Nb-Ti-C-B alloy. Experimental results indicate that thedislocation density is very high and distribute randornly before relaxation. As the relaxation timeincreasing, dislocation cells will form gradually by polygonization. The strain inducedprecipitation retards the progress. In the final relaxation stage, most dislocations get rid ofpinning of precipitates and the cells have developed into subgrains with large size.Transmission electron microscopy (TEM) was applied to investigate theevolution of dislocation configuration and strain induced precipitation behavior during relaxationprocess after deformation in Fe-Ni-Nb-Ti-C-B alloy. Experimental results indicate that thedislocation density is very high and distribute randornly before relaxation. As the relaxation timeincreasing, dislocation cells will form gradually by polygonization. The strain inducedprecipitation retards the progress. In the final relaxation stage, most dislocations get rid ofpinning of precipitates and the cells have developed into subgrains with large size.

关 键 词：RELAXATION dislocation cell strain induced precipitation 

分 类 号：TG146[一般工业技术—材料科学与工程]