Microstructure evolution and quantitative analysis of mechanical properties of cold-rolled low carbon niobium steel

被引：0
|
作者：
Luo, Wentao [1 ]
机构：
[1] Key Laboratory of Material Processing and Mold Technology, School of Mechanical Engineering, Chongqing Industry Polytechnic College, Chongqing,401120, China
来源：
Metallurgical Research and Technology | 2024年 / 121卷 / 05期
关键词：
High-strength low-alloy steel - Low carbon steel - Niobium alloys - Niobium metallurgy - Steel analysis - Steel powder metallurgy;
D O I：
10.1051/metal/2024072
中图分类号：
学科分类号：
摘要：
Based on the idea of plainof alloying elements, Fe-0.2C-2Nb (wt%) alloy steel was designed. The microstructure of the alloy was effectively controlled by means of severe plastic deformation at room temperature and reasonable heat treatment process. The microstructure evolution of the alloy was systematically characterized by TEM. After annealing at 600°C for 0.5 h, the ultimate tensile strength of the sample reached 844 MPa, the total elongation reached 13%, which had an equilibrium state of mechanical properties. Thus a quantitative model between the microstructure parameters and mechanical properties was established to reveal the deformation mechanism and strengthening mechanism of the alloy. © 2024 EDP Sciences, 2024.
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