Effect of Finishing Temperature on Mechanical Properties of a Nb- Microalloyed Steel Sheet
(0) Thermo mechanical processing and controlled rolling of microalloyed steel sheets are affected by several factors. In this investigation, finishing temperature of rolling which is considered as the most effective parameters on the final mechanical properties of hot rolled products has been studied. For this purpose, three different finishing temperatures of 950, 900 and 850 ℃ below the nonrecrystallization temperature and one temperature of 800 ℃ in the intercritical range were chosen. It is observed that decreasing the finishing temperature causes increase of strength and decrease of total elongation. This is accompanied by more grain refinement of microstructure and the morphology was changed from polygonal ferrite to acicular one. Findings of this research provide suitable connection among finishing temperature, microstructural features, and mechanical properties of hot rolled Nbmicroalloyed steel sheets.
Thermo mechanical processing Controlled hot rolling Nb-microalloyed steel Finishing temperature
Daavood Mirahmadi Khaki Abbas Akbarzadeh Amir Abedi
Department of Materials Science and Engineering,Sharif University of Technology,Tehran,Iran Department of Metallurgy,Shahid Rajaee Teacher Training University,Tehran,Iran
国际会议
2010 International Conference on Material and Manufacturing Technology(2010材料与制造技术国际会议 ICMMT2010)
重庆
英文
1022-1028
2010-09-17（万方平台首次上网日期，不代表论文的发表时间）