不同热处理条件对20MnSi钢筋组织及力学性能的影响  

Influence of Heat Treatment Conditions on Microstructure and Mechanical Properties of 20MnSi Steel

作　　者：闫晶[1] 王立颖[2] 

机构地区：[1]吉林铁道职业技术学院,吉林省吉林市132000 [2]大连海事大学机电与材料工程学院,辽宁大连116000

出　　处：《铸造技术》2014年第10期2276-2278,共3页Foundry Technology

摘　　要：以20MnSi钢筋为研究对象,通过OM、SEM和TEM等分析测试方法,研究了其在不同热处理条件下显微组织及力学性能的变化规律。结果表明,随着淬火温度的升高,钢筋的抗拉强度、屈服强度先增加后降低,且在淬火温度为900℃取得极大值,而伸长率和0℃冲击功则随着淬火温度的升高而降低;随着回火温度的升高,钢筋的抗拉强度和屈服强度逐渐降低,而伸长率和0℃冲击功不断增加。20MnSi钢筋在淬火温度为900℃、回火温度为480℃时可以取得最优的强度与塑性。Taking 20MnSi steel as the research object, through the OM, SEM and TEM analysis method to study under different heat treament conditions. The results show that, by increasing quenching temperatures, the tensile and yield strength of the steel first incresas and then decrease with the maximum strength at 900℃, but the elongations and impact energy at 0 ℃ decrease with the increase of tempering temperatures; by increasing tempering temperatures, the tensile and yield strength of the steel dcerease, but the elongations and impact enorgy at 0℃ increase. 20MnSi steel has the best performances when quenched at 900℃ and tempered at 480 ℃,

关 键 词：20MNSI钢 热处理 微观组织 力学性能 

分 类 号：TG156[金属学及工艺—热处理] TG142.1[金属学及工艺—金属学]