| 多次热循环对9Ni钢热影响粗晶区低温韧性的影响 |
| |
| 引用本文： | 周勇,郝世英,岳志宏,王志强. 多次热循环对9Ni钢热影响粗晶区低温韧性的影响[J]. 金属热处理, 2009, 34(2) |
| |
| 作者姓名： | 周勇 郝世英 岳志宏 王志强 |
| |
| 作者单位： | 1. 西安石油大学,材料科学与工程学院,陕西,西安,710065
2. 长庆建设工程总公司,陕西,西安,710086 |
| |
| 基金项目： | 中国石油天然气集团长庆石油勘探局科技攻关项目 |
| |
| 摘 要： | 采用焊接热模拟、电子显微分析、力学性能测试等技术手段,研究了国产9Ni钢在多种焊接热输入条件下焊接热影响粗晶区的低温韧性,讨论了多次焊接热循环对9Ni钢焊接热影响区组织性能的影响规律,以及不同焊接热过程中的组织特征和脆化倾向.研究结果表明,9Ni钢并不适合采用单道焊,在多道焊接过程中,后续焊道的热作用可以良好地改善其低温韧性,粗大晶粒组织的重结晶是提高低温韧性的主要因素.
|
| 关 键 词： | 9Ni钢 热模拟 焊接热循环 低温韧性 |
Influence of different thermal cycle on low temperature toughness in coarse-grained HAZ of 9Ni steel |
| |
| ZHOU Yong,HAO Shi-ying,YUE Zhi-hong,WANG Zhi-qiang. Influence of different thermal cycle on low temperature toughness in coarse-grained HAZ of 9Ni steel[J]. Heat Treatment of Metals, 2009, 34(2) |
| |
| Authors: | ZHOU Yong HAO Shi-ying YUE Zhi-hong WANG Zhi-qiang |
| |
| Affiliation: | 1.School of Materials Science and Engineering;Xi'an Shiyou University;Xi'an Shaanxi 710065;China;2.Changqing Construction Engineering Corporation;Xi'an Shaanxi 710086;China |
| |
| Abstract: | The low temperature toughness in coarse-grained(CG)HAZ of 9Ni steel in different heat input was studied through welding thermal simulation technique,TEM,SEM and mechanical properties test.The influences of single-pass thermal cycle and multi-pass thermal cycle on the microstructure and properties were discussed respectively,and the microstructure and embrittlement mechanism were also discussed.The results show that single-pass welding is not fit for 9Ni steel.The low temperature toughness of CGHAZ in the st... |
| |
| Keywords: | 9Ni steel thermal simulation welding thermal cycle low temperature toughness |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
