| 中碳高硅铸钢的复合热处理工艺 |
| |
| 引用本文： | 宋春梅,许艳东,蔡民.中碳高硅铸钢的复合热处理工艺[J].佳木斯工学院学报,2010(1):92-94. |
| |
| 作者姓名： | 宋春梅 许艳东 蔡民 |
| |
| 作者单位： | [1]佳木斯大学材料科学与工程学院,黑龙江佳木斯154002 [2]佳木斯供水公司,黑龙江佳木斯154002 |
| |
| 摘 要： | 研究了成分（wt．％）为0．62C，2．0Si，1．6Mn，0．99Cr的高硅铸钢经过复合热处理（球化退火＋等温淬火）的组织和力学性能,利用olympus金相电子显微镜观察组织、扫描电子显微镜分析冲击断口形貌；测试了实验钢的洛氏硬度和冲击韧性．实验结果表明，试样经过球化退火工艺之后硬度变化的幅度不大，而冲击韧性有明显地提高，试样的组织主要为下贝氏体组织，并含有少量的奥氏体．在相同的球化退火工艺下，320℃等温淬火60min，试样的硬度和冲击韧性值都较高．
|
| 关 键 词： | 高硅铸钢 球化退火 下贝氏体 冲击韧性 |
Duplex Heattreatment of Medium Carbon High- Si Cast Steels |
| |
| Authors: | SONG Chun - mei XU Yan- dong CAI Min |
| |
| Affiliation: | 1. College of Materials Science and Engineering, Jiamusi University, Jiamusi 154007, China; 2. Jiamusi Water Supply Company, Jiamusi 154007, China) |
| |
| Abstract: | The microstructure and properties of high silicon cast steel samples were investigated after isothermal quenching. The chemical composition of samples （ wt. % ） was 0.62C, 2.0Si, 1.6Mn and 0.99Cr. The fracture morphology was analyzed with SEM. The results showed that the hardness of samples after spheroidizing annealing flutuated a little in amplitude and there was clear improvement in impact toughness. The microstructure of samples was mainly lower bainite and a little retained austenite under spheroidizing annealing and 320℃ isothermal quenching for 60 minutes, and the hardness and impact toughness of samples were both high. The process adopted in this experiment was simple and feasible. |
| |
| Keywords: | high silicon cast steel spheroidizing annealing lower bainite impact toughness |
| 本文献已被 维普 等数据库收录！ |
