Nonuniform distribution of carbonitride particles and its effect on prior austenite grain size in the simulated coarse-grained heat-affected zone of thermomechanical control-processed steels
文献类型：期刊论文
| 作者 | D. W. Tian ; L. P. Karjalainen ; B. N. Qian ; X. F. Chen |
| 刊名 | Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science
 |
| 出版日期 | 1996 |
| 卷号 | 27期号:12页码:4031-4038 |
| 关键词 | weld thermal cycles microalloyed steels hsla steels growth nb |
| ISSN号 | 1073-5623 |
| 中文摘要 | The spatial distribution of carbonitride particles in the simulated coarse-grained heat-affected zone (HAZ) of Nb-Ti microalloyed thermomechanical control-processed (TMCP) steels was investigated using a scanning transmission electron microscope (STEM). It was found that the particles in quenched coarse-grained HAZ were frequently distributed in a nonuniform way, forming clusters and arrays of particles. This nonhomogeneity is defined by the grouping tendency of particles and described by the closeness of the average number density (the mean particle number per unit area) to the average local number density (the mean particle number per unit area, excluding the examined areas without particles). A high concentration of Nb (0.04 mass pet in this article) promoted the formation of carbonitride particle arrays and clusters because of its high segregation tendency at grain and subgrain boundaries during the cooling of a slab. Some of these particles remain undissolved at the peak temperature of a welding thermocycle and may result in sympathetic nucleation of new particles on them. The effectiveness of the particle groups to restrict grain growth is discussed. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/38408]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | D. W. Tian,L. P. Karjalainen,B. N. Qian,et al. Nonuniform distribution of carbonitride particles and its effect on prior austenite grain size in the simulated coarse-grained heat-affected zone of thermomechanical control-processed steels[J]. Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,1996,27(12):4031-4038. |
| APA | D. W. Tian,L. P. Karjalainen,B. N. Qian,&X. F. Chen.(1996).Nonuniform distribution of carbonitride particles and its effect on prior austenite grain size in the simulated coarse-grained heat-affected zone of thermomechanical control-processed steels.Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,27(12),4031-4038. |
| MLA | D. W. Tian,et al."Nonuniform distribution of carbonitride particles and its effect on prior austenite grain size in the simulated coarse-grained heat-affected zone of thermomechanical control-processed steels".Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science 27.12(1996):4031-4038. |
入库方式： OAI收割
来源：金属研究所
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