Determination of Optimal Recrystallization Annealing Temperature of Nb-Ti Microalloyed High Strength IF Steel

摘要：

The Nb-Ti microalloyed high strength IF steel sheet was used to study the effect of annealing temperature on the microstructures, mechanical properties and textures. The experimental results show that experimental steel is incomplete recrystallization at 750℃ annealing, but complete recrystallization from 780 ℃ to 870 ℃ under experimental conditions. When the annealing temperature was increased, the yield strength and tensile strength would gradually reduce,the plastic strain ratio and yield point elongation would gradually increase. The yield strength, tensile strength, elongation,the plastic strain ratio and the strain hardening exponent were approximate 300MPa, 410MPa, 36.5％, 1.7 and 0.22 respectively under annealing temperature 810℃ to 840 ℃. When the a nnealing temperature was increased, the α-textures and γ -textures were gradually weakened, and the α-textures have a trend to 111 texture. Therefore, the suggestion of the optimal recrystallization annealing temperature is about 810 ℃ to 840 ℃ in industrial production.

关键词： Nb-Ti microalloyed high strength IF steel salt-bath annealing recrystallization annealing temperature textures

作者: WANG Min-li Xiao Li ZHENG Zhi-wang ZHANG Gong-ting

作者单位: PanGang Group Research Institute Co., Ltd. ,Chengdu, Sichuan ,611731 , China PanGang Group Xichang company , Xichang, Sichuan ,615041, China

会议类型: 国际会议

会议名称: The 6th International Conference on High Strength Low Alloy Steels(第六届高强度低合金钢国际会议HSLA Steels2011)

会议地点: 北京

会议语种:英文

页码: 840-844

在线出版日期: 2011-05-31（万方平台首次上网日期，不代表论文的发表时间）