| 低碳Ti-Nb系列钢焊后显微组织和性能 |
| |
| 引用本文： | 尹桂全,高甲生,洪永昌,陈锐.低碳Ti-Nb系列钢焊后显微组织和性能[J].焊接学报,2001,22(2):71-74. |
| |
| 作者姓名： | 尹桂全 高甲生 洪永昌 陈锐 |
| |
| 作者单位： | 安徽工业大学, |
| |
| 摘 要： | 研究了焊接热模拟工艺参数中，冷却时间t8/5对Ti-N和Ti-Nb-N两种成分系列钢热影响区（HAZ）显微组织和冲击韧性的影响，用光学显微镜和电子显微镜（SEM，TEM）观察了不同试样的HAZ中，铁素体（F）和粒贝组织的特征，特别是M-A组元的形态、数量和分布，分析了不同冷却速度产生的显微组织和冲击韧度的关系，探讨了微量合金元素Ti、Nb、N的添加对焊后试样HAZ组织和韧性所起的作用。结果表明，随t8/5趋缓，Ti-N系列钢中F数量增加，粒贝数量减少，M-A组元由长条状变为方块状，韧性相应大幅提高，而Nb的添加抑制了F的生成，有利于产生侧板条状粒贝，对韧性的改善不利。
|
| 关 键 词： | 冷却速度 显微组织 韧性 低合金钢 |
| 文章编号： | 0253-360X(2001)02-71-04 |
| 收稿时间： | 2000/6/12 0:00:00 |
The Microstructure and Toughness of HAZ in Low Carbon Ti-Nb Series Steels after Welding |
| |
| YIN Gui-quan,GAO Jia-sheng,HONG Yong-chang and CHEN Rui.The Microstructure and Toughness of HAZ in Low Carbon Ti-Nb Series Steels after Welding[J].Transactions of The China Welding Institution,2001,22(2):71-74. |
| |
| Authors: | YIN Gui-quan GAO Jia-sheng HONG Yong-chang and CHEN Rui |
| |
| Affiliation: | Anhui University of Technology, Anhui 243002, China,Anhui University of Technology, Anhui 243002, China,Anhui University of Technology, Anhui 243002, China and Anhui University of Technology, Anhui 243002, China |
| |
| Abstract: | Effects of cooling rate (t8/5) during simulated welding thermal cycle on the microstructures and toughness of HAZ in two series Ti—Nb steels were studied.The morphology,numbers and distribution of ferrite and granular bainite,especially M-A constituent in HAZ at different cooling rate (t8/5) were observed by optical and electron micro-scopes.The relation between microstructures and impact toughness in different cooling rates was analysised.The actions of added microalloying elements Ti,Nb and N on improving microstructures and toughness of HAZ in specimens was discussed. |
| |
| Keywords: | microalloying Ti steel weld cooling rate microstructure toughness |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《焊接学报》浏览原始摘要信息 |
|
点击此处可从《焊接学报》下载全文 |
|
