中国机械工程2025，Vol.36Issue(10)：2190-2197,8.DOI:10.3969/j.issn.1004-132X.2025.10.004
等离子体处理对45钢力学性能影响的试验及分子动力学模拟研究
Experimental and Molecular Dynamics Simulation for Mechanics Properties of 45 Steel Treated by Plasma
摘要
Abstract
To investigate the influences of plasma treatment on the mechanics properties of 45 steel,the changes of mechanics properties of 45 steel before and after treatment were studied by combining experi-ments and molecular dynamics simulation.The test results show that the hardness and tensile mechanics properties of 45 steel are obviously decreased after plasma treatment.Under the treatment durations of 1,5 and 10 min,the nano-hardnessis decreased by 12%,21%and 28%respectively,and the longer the treat-ment time,the better the modification effect,and the duration of the modification effect is more than 20 h.When the thickness of tensile specimens is as 0.1,0.15 and 0.2 mm,the tensile strength decreases by 3.3%,4.5%and 5.3%,and the elongation after fracture decreases by 39.69%,42.17%and 42.49%,respectively.The molecular dynamics simulation results show that the number and strength of Fe-Fe bonds in 45 steel are reduced after plasma modification,resulting in the reduction of yield strength and sur-face hardness of the materials,which is basically consistent with the experimental results.关键词
等离子体/分子动力学/纳米硬度/抗拉强度/45钢Key words
plasma/molecular dynamics/nano-hardness/tensile strength/45 steel分类
机械工程引用本文复制引用
彭照波,孔金星,杜东兴,罗涵锟,岳恒..等离子体处理对45钢力学性能影响的试验及分子动力学模拟研究[J].中国机械工程,2025,36(10):2190-2197,8.基金项目
国家重点研发计划(J0149(2)-2325-KYF) （J0149(2）
