Quantitative Phase Field Simulation of α Particle Dissolution in Ti-6A1-4V Alloys Below β Transus Temperature

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	Quantitative Phase Field Simulation of α Particle Dissolution in Ti-6A1-4V Alloys Below β Transus Temperature
其他题名	Quantitative Phase Field Simulation of α Particle Dissolution in Ti-6A1-4V Alloys Below β Transus Temperature
	Yang Mei 1; Wang Gang 2; Liu Tao 1; Zhao Wenjuan 3; Xu Dongsheng 4
	2017
发表期刊	Acta Metallurgica Sinica(English Letters)
ISSN	1006-7191
卷号	30 期号:8 页码:745-752
摘要	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.
其他摘要	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.
关键词	Dissolution Phase field model Ti-6A1-4V Initial PSD Space distribution
收录类别	CSCD
语种	英语
CSCD记录号	CSCD:6031319
引用统计	被引频次：4[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/157786
专题	中国科学院金属研究所
作者单位	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
推荐引用方式 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.