Effect of Interactions Among Elements on Diffusion Process Associated with gamma ' Coarsening in a Ni-Based Single-Crystal Superalloy
文献类型：期刊论文
| 作者 | Wang, Guang-Lei; Qi, Dong-Qing; Liu, Ji-De; Liu, Jin-Lai; Zhou, Yi-Zhou; Sun, Xu-Dong; Zhang, Hai-Feng; Sun, Xiao-Feng |
| 刊名 | ACTA METALLURGICA SINICA-ENGLISH LETTERS
 |
| 出版日期 | 2020-07-01 |
| 卷号 | 33期号:7页码:1013-1020 |
| DOI | 10.1007/s40195-020-01009-z |
| 英文摘要 | Coarsening of cuboidal gamma ' precipitates and relevant diffusion process in Ni-based single-crystal superalloy CMSX-4 were investigated at 1000, 1020 and 1040 degrees C for specific times. The gamma ' coarsening kinetics followed a cubic rate law with time and was presumably controlled by bulk diffusion of elements in gamma matrix. The associated diffusion activation energy was experimentally determined to be about 300 kJ/mol when it is considered the temperature-dependent thermo-physical parameters in modified Lifshitz-Slyozov-Wagner theory. The influence of temperature on gamma/gamma ' microstructure is briefly discussed based on pseudo-binary [Ni]-[Al] phase diagram. Interactions among elements can effectively raise the local vacancy formation and vacancy-atom exchange barriers close to gamma- and gamma '-partitioning elements, respectively. Thus, it can significantly reduce the inter-coupling migrations of atoms during the macroscopic cross-diffusion process associated with gamma ' coarsening of Ni-based superalloys. |
| WOS记录号 | WOS:000516777500001 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/155715]  |
| 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 | Wang, Guang-Lei,Qi, Dong-Qing,Liu, Ji-De,et al. Effect of Interactions Among Elements on Diffusion Process Associated with gamma ' Coarsening in a Ni-Based Single-Crystal Superalloy[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2020,33(7):1013-1020. |
| APA | Wang, Guang-Lei.,Qi, Dong-Qing.,Liu, Ji-De.,Liu, Jin-Lai.,Zhou, Yi-Zhou.,...&Sun, Xiao-Feng.(2020).Effect of Interactions Among Elements on Diffusion Process Associated with gamma ' Coarsening in a Ni-Based Single-Crystal Superalloy.ACTA METALLURGICA SINICA-ENGLISH LETTERS,33(7),1013-1020. |
| MLA | Wang, Guang-Lei,et al."Effect of Interactions Among Elements on Diffusion Process Associated with gamma ' Coarsening in a Ni-Based Single-Crystal Superalloy".ACTA METALLURGICA SINICA-ENGLISH LETTERS 33.7(2020):1013-1020. |
入库方式： OAI收割
来源：金属研究所
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