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| 再结晶晶界对合金钢锭Cr元素均匀化扩散的影响 | |
| 引用本文： | 陈锟,杨弋涛,邵光杰,刘克家.再结晶晶界对合金钢锭Cr元素均匀化扩散的影响[J].材料热处理学报,2011,32(5). |
| 作者姓名： | 陈锟 杨弋涛 邵光杰 刘克家 |
| 作者单位： | 1. 上海大学材料科学与工程学院,上海,200072;上海应用技术学院材料科学与工程学院,上海,200235 2. 上海应用技术学院材料科学与工程学院,上海,200235 3. 上海大学材料科学与工程学院,上海,200072 |
| 基金项目： | 国家科技支撑计划课题(2007BAE51B04) |
| 摘 要： | 从晶界扩散的角度对含Cr钢锭锻后扩散加快的现象进行了实验验证和理论解释。首先由粗、细两种晶粒的Cr元素扩散偶的均匀化退火数据,得到细晶晶界加快了Cr元素的体扩散。基于锻造变形再结晶细化晶粒的作用,推断锻后再结晶晶界对Cr原子的扩散具有加速作用。在此基础上,对锻后扩散退火的钢锭中Cr元素的分布进行了测定,得出锻后Cr元素的扩散系数大于锻前。此与晶界加快扩散的结果相一致,证明了锻后细晶加速了Cr原子的扩散。 |
| 关 键 词： | 均匀化退火 扩散 晶界 再结晶 铬 |
Effect of recrystallization grain boundary on homogenized diffusion of chromium in alloy steel ingot |
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| CHEN Kun,YANG Yi-tao,SHAO Guang-jie,LIU Ke-jia.Effect of recrystallization grain boundary on homogenized diffusion of chromium in alloy steel ingot[J].Transactions of Materials and Heat Treatment,2011,32(5). | |
| Authors: | CHEN Kun YANG Yi-tao SHAO Guang-jie LIU Ke-jia |
| Affiliation: | CHEN Kun 1,2,YANG Yi-tao 1,SHAO Guang-jie 1,LIU Ke-jia2(1.School of Materials Science and Engineering,Shanghai University,Shanghai 200072,China,2.School of Materials Science and Engineering,Shanghai Institute of Technology,Shanghai 200235,China) |
| Abstract: | From the view of grain boundary diffusion,the fact that forging enhanced the diffusion of Cr in alloy steel ingot was experimentally verified and theoretically explained.By data obtained from coarse-grained and fine-grained Cr diffusion couple after homogenizing annealing,it is presented that fine-grained boundary enhances bulk diffusion of Cr.Based on grain refining effect of recrystallization through forging,it is deduced that recrystallization grain boundary enhances the diffusion of Cr.The measurement o... |
| Keywords: | homogenizing annealing diffusion grain boundary recrystallization chromium |
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