摘要
利用扫描电镜、万能试验机、X射线衍射仪等研究了两相区不同温度退火对Fe-0.12C-4.85Mn-0.24Si钢组织与力学性能的影响。结果表明,随着退火温度的升高,Fe-0.12C-4.85Mn-0.24Si钢晶粒尺寸逐渐增大,碳化物逐渐溶解,组织中奥氏体体积分数先增加后减少。640℃退火的Fe-0.12C-4.85Mn-0.24Si钢的奥氏体体积分数最高,为22.1%。随着退火温度的升高,Fe-0.12C-4.85Mn-0.24Si钢的抗拉强度逐渐升高,伸长率和强塑积先升高后降低,640℃退火的Fe-0.12C-4.85Mn-0.24Si钢的伸长率和强塑积最高,分别为30.4%和28.47 GPa·%。
Effect of different temperatures annealing in the two⁃phase region on the microstructure and mechanical properties of Fe⁃0.12C⁃4.85Mn⁃0.24Si steel was studied using scanning electron microscopy,universal testing machine,X⁃ray diffraction instrument.The results show that with the increase of annealing temperature,the grain size of the Fe⁃0.12C⁃4.85Mn⁃0.24Si steel gradually increases,carbides gradually dissolve,and the volume fraction of austenite in the microstructure first increases and then decreases.The Fe⁃0.12C⁃4.85Mn⁃0.24Si steel annealed at 640℃has the highest austenite volume fraction of 22.1%.As the annealing temperature increases,the tensile strength of the Fe⁃0.12C⁃4.85Mn⁃0.24Si steel gradually increases,and the product of elongation and strength first increases and then decreases.The elongation and product of strength and elongation of the Fe⁃0.12C⁃4.85Mn⁃0.24Si steel annealed at 640℃are the highest,which are 30.4%and 28.47 GPa·%,respectively.
作者
梁科
武猛
张习烨
行志刚
Liang Ke;Wu Meng;Zhang Xiye;Xing Zhigang(Hebi Institute of Engineering and Technology,Henan Polytechnic University,Hebi Henan 458030,China;School of Mechanical and Power Engineering,Henan Polytechnic University,Jiaozuo Henan 454003,China;Engineering Training Center,Henan Polytechnic University,Jiaozuo Henan 454003,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2024年第8期174-177,共4页
Heat Treatment of Metals
基金
国家级大学生创新创业训练计划(202210460011)
河南理工大学鹤壁工程技术学院2023年度校级科研项目(2023-ZRYB-018)。
