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Quantitative Phase Field Simulation of α Particle Dissolution in Ti-6A1-4V Alloys Below β Transus Temperature
Alternative TitleQuantitative 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 PublicationActa Metallurgica Sinica(English Letters)
ISSN1006-7191
Volume30Issue:8Pages:745-752
AbstractA 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 AbstractA 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.
KeywordDissolution Phase field model Ti-6A1-4V Initial PSD Space distribution
Indexed ByCSCD
Language英语
CSCD IDCSCD:6031319
Citation statistics
Cited Times:3[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/157786
Collection中国科学院金属研究所
Affiliation1.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.
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