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| 时效处理对Nb微合金化钢筋屈服的影响 | |
| 引用本文： | 张朝晖,柳永宁,巨建涛,金波. 时效处理对Nb微合金化钢筋屈服的影响[J]. 铸造技术, 2007, 28(4): 483-486 |
| 作者姓名： | 张朝晖 柳永宁 巨建涛 金波 |
| 作者单位： | 1. 西安交通大学金属材料强度国家重点实验室,陕西,西安,710049;西安建筑科技大学冶金工程学院,陕西,西安,710055 2. 西安交通大学金属材料强度国家重点实验室,陕西,西安,710049 3. 西安建筑科技大学冶金工程学院,陕西,西安,710055 |
| 基金项目： | 陕西省科技厅资助项目;陕西省教育厅资助项目 |
| 摘 要： | 采用光学显微镜和电子透射显微镜观察等方法,研究了时效处理对Nb微合金化钢筋组织与性能的影响,并着重分析了Nb微合金化钢筋屈服点不明显的原因。研究表明,在200℃下进行45 h以上时效处理后的试样,由于时效促进了固溶碳原子的扩散,使相当数量的碳原子偏聚到刃型位错下方形成柯氏气团,使钢筋的屈服点得到恢复。 |
| 关 键 词： | Nb微合金化 钢筋 时效屈服 |
| 文章编号： | 1000-8365(2007)04-0483-04 |
| 修稿时间： | 2006-10-11 |
Effect of Aging on Nb Micro-alloyed Reinforced Bar''''s Yield |
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| ZHANG Zhao-hui,LIU Yong-ning,JU Jian-tao,JIN Bo. Effect of Aging on Nb Micro-alloyed Reinforced Bar''''s Yield[J]. Foundry Technology, 2007, 28(4): 483-486 | |
| Authors: | ZHANG Zhao-hui LIU Yong-ning JU Jian-tao JIN Bo |
| Abstract: | The effects of aging treatment on structures and properties of Nb microalloyed reinforced bar were studied by optical microscope and TEM, and the cause of no-yield point was analyzed primarily. It showed that the no-yield points of the samples were recovered with aging at 200 13 apove 45 hours. Because aging treatment promoted the diffusion of carbon atoms in solid-solution, which resulted in many of the carbon atoms gathered to the edge dislocations and generated Cottrell clouds, the yield points of the reinforced bar were recovered. |
| Keywords: | Nb micro-alloyeding Steel bar Aging Yield |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |