Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Zhi Guo Gao"'
Autor:
Zhi Guo Gao
Publikováno v:
Solid State Phenomena. 331:37-46
Nucleation and growth conditions of single-crystallinity control are convincingly elaborated by multi-scale mathematical modeling of heat and mass transport to totally abate undesirable weld defects, e.g. disoriented crystal and hot cracking inside m
Autor:
Zhi Guo Gao
Publikováno v:
Solid State Phenomena. 331:113-121
When multicomponent molten pool nonequilibrium solidification, the interrelationship of location-dependent dendrite tip undercooling on low heat input and optimal growth crystallography is progressively discussed over planar interface morphology stab
Autor:
Zhi Guo Gao
Publikováno v:
Solid State Phenomena. 330:51-60
To pertinently balance growth kinetics, solidification thermodynamics and dendrite expitaxy of multicomponent nickel-based single-crystal supralloy during laser processing, effect of thermometallurgy determinant factors, including laser power, weldin
Autor:
Zhi Guo Gao
Publikováno v:
Solid State Phenomena. 330:61-70
The effect of thermo-metallurgical factors, such as heat input and welding configuration, on solidification cracking driving forces nearby dendrite tip, such as solidification temperature range and columnar/equiaxed transition (CET) was thermodynamic
Autor:
Zhi Guo Gao
Publikováno v:
Materials Science Forum. 1054:101-110
The dependency of morphology development and dendrite growth on welding conditions (laser power, welding speed and welding configuration) is numerically analyzed to decrease nucleation and growth of stray grain formation during laser processing aeros
Autor:
Zhi Guo Gao
Publikováno v:
Materials Science Forum. 1054:91-100
When three welding conditions, including welding configuration, welding speed and laser power, are sequentially altered, supersaturation of liquid aluminum is crystallography-dependently determined to limit growth kinetics of dendrite tip with deceas
Autor:
Zhi Guo Gao
Publikováno v:
Key Engineering Materials. 907:197-208
Two important thermometallurgical factors, i.e. aluminum redistribution and dendrite tip undercooling, are numerically analyzed to better understand growth kinetics of microstructure development with favorable and unfavorable crystallographic orienta
Autor:
Zhi Guo Gao
Publikováno v:
Key Engineering Materials. 907:215-227
Correlation between welding conditions, such as laser power, welding speed and welding configuration, microstructure anomalies, including columnar/equiaxed transition (CET) and stray grain formation, and metallurgical factors, such as aluminum redist
Autor:
Zhi Guo Gao
Publikováno v:
Materials Science Forum. 1041:47-56
The contribution of crystallography-dependent metallurgical factors, such as supersaturation of liquid aluminum and minimum dendrite tip undercooling, to solidification behavior and microstructure development is numerically analyzed during Ni-Cr-Al t
Autor:
Zhi Guo Gao
Publikováno v:
Materials Science Forum. 1033:40-48
The solidification temperature range was numerically analyzed to optimize nonequilibrium solidification behavior during ternary Ni-Cr-Al nickel-based single-crystal superalloy weld pool solidification with variation of laser welding conditions (eithe