TY - JOUR
T1 - Microscopic phase-field study for oriented diffusion channel effect of nickel-based alloy and phases' effect mechanism
AU - Yang, Kun
AU - Chen, Zheng
AU - Dong, Weiping
AU - Wang, Yongxin
AU - Zhang, Mingyi
PY - 2011/4
Y1 - 2011/4
N2 - In this paper, a microscopic phase-field model was used to investigate the effect of the oriented diffusion channel and the phases' effect mechanism for the Ni75Al6.0V19.0 alloy during a phase transformation process. A diffusion channel of V was formed in the [100] direction. The oriented growth of DO22 in this direction, when an elastic misfit stress field existed, forced Al to form a diffusion channel next to DO22, resulting in L12-oriented growth. With an increase in stress, the oriented growth increased initially and then decreased. At a higher stress, the average values of the occupation probability for V atoms became constant later while Al atoms earlier.
AB - In this paper, a microscopic phase-field model was used to investigate the effect of the oriented diffusion channel and the phases' effect mechanism for the Ni75Al6.0V19.0 alloy during a phase transformation process. A diffusion channel of V was formed in the [100] direction. The oriented growth of DO22 in this direction, when an elastic misfit stress field existed, forced Al to form a diffusion channel next to DO22, resulting in L12-oriented growth. With an increase in stress, the oriented growth increased initially and then decreased. At a higher stress, the average values of the occupation probability for V atoms became constant later while Al atoms earlier.
KW - diffusion channel effect
KW - diffusion-induced stresses
KW - microscopic phase-field
KW - stresses-induced diffusion
UR - http://www.scopus.com/inward/record.url?scp=79954594724&partnerID=8YFLogxK
U2 - 10.1007/s11431-011-4301-8
DO - 10.1007/s11431-011-4301-8
M3 - 文章
AN - SCOPUS:79954594724
SN - 1674-7321
VL - 54
SP - 835
EP - 840
JO - Science China Technological Sciences
JF - Science China Technological Sciences
IS - 4
ER -