| 回火温度对Q890高强钢组织和性能的影响 |
| |
| 引用本文： | 苏世宇,斯松华,贺文文.回火温度对Q890高强钢组织和性能的影响[J].热处理,2012,27(4):44-47. |
| |
| 作者姓名： | 苏世宇 斯松华 贺文文 |
| |
| 作者单位： | 安徽工业大学材料科学与工程学院,安徽马鞍山,243002 |
| |
| 摘 要： | 研究了回火温度对经一定温度淬火后的Q890高强度钢组织和力学性能的影响。结果表明，从920℃淬火并于200～700℃回火时，随着回火温度的升高，Q890钢的淬火马氏体逐渐转变为回火马氏体、回火托氏体及回火索氏体，硬度总体呈下降趋势；600℃回火后，Q890钢的组织主要为回火托氏体，硬度为35HRC。此外，经从920℃淬火和600℃回火的5～25mm厚Q890钢板的屈服强度均大于900MPa，-40℃的冲击韧度均大于45J。
|
| 关 键 词： | Q890高强钢 回火温度 显微组织 力学性能 |
Effect of Tempering Temperature on Microstructure and Properties of Q890 Grade High-strength Steel |
| |
| SU Shi-yu
,
SI Song-hua
,
HE Wen-wen.Effect of Tempering Temperature on Microstructure and Properties of Q890 Grade High-strength Steel[J].Heat Treatment,2012,27(4):44-47. |
| |
| Authors: | SU Shi-yu SI Song-hua HE Wen-wen |
| |
| Affiliation: | (School of Materials Science and Engineering,Anhui University of Technology,Ma’anshan 243002,Anhui China) |
| |
| Abstract: | The effect of tempering temperature was investigated on microstructure and mechanical properties of Q890 grade high-strength steel quenched from a fixed temperature.The results show that with respect to Q890 grade steel quenched from 920℃,(a) the as-quenched martensite will gradually transform into tempered martensite,tempered troosite and tempered sorbite,and the hardness will tend to decrease,with the raise of tempering temperature in the range of 200 to 700℃;(b) after tempering at 600℃the microstructure is mainly tempered troostite and the hardness is about 35 HRC。In addition,the yield strength and impact toughness at - 40℃of 5 to 25 mm-thick Q890 grade plate all reach above 900 MPa and above 45 J respectively after quenching from 920℃and tempering at 600℃. |
| |
| Keywords: | Q890 grade high-strength steel tempering temperature microstructure mechanical property |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
