摘要
采用显微组织观察、拉伸试验、断口形貌观察等方法,研究了840~1000℃不同温度退火对C-Mn-Si-Al钢组织及力学性能的影响。结果表明:840~920℃退火的C-Mn-Si-Al钢组织主要为奥氏体、铁素体及弥散分布的(Fe,Mn)_(3)AlC碳化物,960~1000℃退火的C-Mn-Si-Al钢组织主要为奥氏体及铁素体。随着退火温度的升高,C-Mn-Si-Al钢抗拉强度逐渐降低,伸长率和强塑积逐渐升高。1000℃退火C-Mn-Si-Al钢的强塑积达到最大值46929 MPa·%。
The effects of annealing at 840-1000℃on the microstructure and mechanical properties of C-Mn-Si-Al steels were studied by means of microstructure observation,tensile test and fracture morphology observation.The results show that the microstructure of C-Mn-Si-Al steels annealed at 840-920℃is mainly austenite,ferrite and dispersed(Fe,Mn)_(3) AlC carbide,the microstructure of C-Mn-Si-Al steel annealed at 960-1000℃is mainly austenite and ferrite.With the increase of annealing temperature,the tensile strength of C-Mn-Si-Al steels decrease gradually,and the elongation and strength plastic product increase gradually.The maximum value of strength plastic product of C-Mn-Si-Al steels annealed at 1000℃is 46929 MPa·%.
作者
李娜
葛新峰
LI Na;GE Xinfeng(School of Electrical and Mechanical Engineering,Xuchang University,Xuchang 461000,China)
出处
《热加工工艺》
北大核心
2021年第20期131-133,共3页
Hot Working Technology
基金
河南省科技厅科技攻关项目(182102210508)。
