| Quantitative Phase Field Simulation of α Particle Dissolution in Ti-6A1-4V Alloys Below β Transus Temperature | |
| Alternative Title | Quantitative Phase Field Simulation of α Particle Dissolution in Ti-6A1-4V Alloys Below β Transus Temperature |
| Yang Mei1; Wang Gang2; Liu Tao1; Zhao Wenjuan3; Xu Dongsheng4 | |
| 2017 | |
| Source Publication | Acta Metallurgica Sinica(English Letters)
 |
| ISSN | 1006-7191 |
| Volume | 30Issue:8Pages:745-752 |
| Abstract | A quantitative phase field method of multi-component diffusion-controlled phase transformations coupled with the Kim-Kim-Suzuki model was applied to study the effect of initial particle size distribution (PSD) in 3D and space distribution in 2D on dissolution of α particles in Ti-6Al-4V alloy below β transus temperature in real time and length scale. The thermodynamic and mobility data were obtained from Thermo-Calc and DICTRA softwares, respectively. The results show that the volume fractions of α particles decay with time as: f = f_(eq)+ (f_o -f_(eq)) exp(-Kt~n) for four cases of PSD. The sequence of dissolution kinetics from fast to slow is: uniform PSD, normal PSD, lognormal PSD and bimodal PSD. The space distribution is found to be a major factor affecting the dissolution kinetics and the microstructures. When the distance of the particles is less than critical value, the dissolution rates reduce with the decrease in distance. The A1 and V concentration fields around the particles appear more obvious soft impingement. |
| Other Abstract | A quantitative phase field method of multi-component diffusion-controlled phase transformations coupled with the Kim-Kim-Suzuki model was applied to study the effect of initial particle size distribution (PSD) in 3D and space distribution in 2D on dissolution of α particles in Ti-6Al-4V alloy below β transus temperature in real time and length scale. The thermodynamic and mobility data were obtained from Thermo-Calc and DICTRA softwares, respectively. The results show that the volume fractions of α particles decay with time as: f = f_(eq)+ (f_o -f_(eq)) exp(-Kt~n) for four cases of PSD. The sequence of dissolution kinetics from fast to slow is: uniform PSD, normal PSD, lognormal PSD and bimodal PSD. The space distribution is found to be a major factor affecting the dissolution kinetics and the microstructures. When the distance of the particles is less than critical value, the dissolution rates reduce with the decrease in distance. The A1 and V concentration fields around the particles appear more obvious soft impingement. |
| Keyword | Dissolution Phase field model Ti-6A1-4V Initial PSD Space distribution |
| Indexed By | CSCD |
| Language | 英语 |
| CSCD ID | CSCD:6031319 |
| Citation statistics |
Cited Times:3[CSCD]
[CSCD Record]
|
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/157786 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 1.江苏理工学院 2.华南理工大学 3.湘潭大学 4.中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | Yang Mei,Wang Gang,Liu Tao,et al. Quantitative Phase Field Simulation of α Particle Dissolution in Ti-6A1-4V Alloys Below β Transus Temperature[J]. Acta Metallurgica Sinica(English Letters),2017,30(8):745-752. |
| APA | Yang Mei,Wang Gang,Liu Tao,Zhao Wenjuan,&Xu Dongsheng.(2017).Quantitative Phase Field Simulation of α Particle Dissolution in Ti-6A1-4V Alloys Below β Transus Temperature.Acta Metallurgica Sinica(English Letters),30(8),745-752. |
| MLA | Yang Mei,et al."Quantitative Phase Field Simulation of α Particle Dissolution in Ti-6A1-4V Alloys Below β Transus Temperature".Acta Metallurgica Sinica(English Letters) 30.8(2017):745-752. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment