Effect of Phosphorus Grain Boundaries Segregation and Precipitations on Mechanical Properties for Ti-IF Steel after Recrystallization Annealing

作     者：Xinli Song Zexi Yuan Juan Jia Di Wang Pinghe Li Zhaojun Deng 

作者机构：Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University ofScience and Technology Wuhan 430081 China Iron and Steel Research' Center Wuhan' Iron and Steel Group Corporation Wuhan 430080 China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2010年第26卷第9期

页      面：793-797页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：supported by the National Natural Science Foundation of China under Grant No.50901054 

主　　题：IF(interstitial-free) steel Segregation Mechanical properties Recrystallization annealing 

摘      要：The cold-rolled（75% reduction ratio） Ti-IF（interstitial-free） steels of 1 mm thickness were recrystallized by annealing at 810°C for different *** microstructure,mechanical properties and phosphorus segregation at grain boundary were investigated by means of optical microscopy（OM）,tensile testing and field emission transmission electron microscopy（FE-TEM）.It was observed that recrystallization was completed after annealing at 810°C for 180 *** yield strength and tensile strength decreased as annealing time *** FE-TEM observation showed that after the annealing treatment,the grain boundary was broadened and the dislocations with higher density of phosphorus atoms and phosphide at grain boundaries became *** amount of phosphorus segregated at grain boundaries increased with annealing time.