Strain influence on the precipitation kinetic Nb-V microalloyed HSLA steel

摘要：

The strain induced effect on the precipitation kinetics of a high strength low alloy (HSLA) steel microalloyed with Nb-V was investigated. The stress relaxation method was employed to determine the dependence of the precipitation-time-temperature curves (PTT) on previous strain. Relaxation tests were performed over a temperature range of 850 to 1150 ℃ at a constant strain rate of 0.1 s-1 at three deformation levels, namely 5, 15 and 25 pct. Field emission scanning electron microscopy (FESEM) was used to study the progress of precipitation on samples obtained by interrupted relaxation test at different times. Results display the acceleration kinetics at increasing strain. Theoretical models are discussed and compared with the present experimental results.

关键词： strain induced precipitation kinetic HSLA stress relaxation PTT

作者: CARTAYA Elio Armando CABRERA José María PRADO José Manuel

作者单位: Departamento de Ciencia de Materiales e Ingenieria Metalurgica,ETSEIB,Universidad Politecnica de Cat Departamento de Ciencia de Materiales e Ingenieria Metalurgica,ETSEIB,Universidad Politecnica de Cat

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: 305-308

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）