TY - JOUR
T1 - Polycrystal modeling and micromechanical simulation of nickel-based superalloy electron beam welded joint
AU - Dong, Shaojing
AU - Zhou, Minhui
AU - Gao, Kun
AU - Shen, Xiuli
N1 - Publisher Copyright:
© 2023 Elsevier B.V.
PY - 2023/9/6
Y1 - 2023/9/6
N2 - It has been widely recognized that the microstructure heterogeneity of welded joints has significant influence on the mechanical performance, which indicates that characterization of microstructure is the key to reveal the mechanical properties. Based on electron backscatter diffraction, the statistical distribution of three-dimensional grain geometric parameters was established by metallographic stereology. Then the observation-parameter statistics modeling method was established according to the ellipsoidal velocity field Voronoi algorithm. And the statistical characteristics of grains in different areas are restored by random dispersion, which verifies the accuracy of the modeling method used for complex structure polycrystalline materials. The uniaxial tensile simulation and experiment are conducted and the consistency of the two results verifies the value of the model for mechanical analysis.
AB - It has been widely recognized that the microstructure heterogeneity of welded joints has significant influence on the mechanical performance, which indicates that characterization of microstructure is the key to reveal the mechanical properties. Based on electron backscatter diffraction, the statistical distribution of three-dimensional grain geometric parameters was established by metallographic stereology. Then the observation-parameter statistics modeling method was established according to the ellipsoidal velocity field Voronoi algorithm. And the statistical characteristics of grains in different areas are restored by random dispersion, which verifies the accuracy of the modeling method used for complex structure polycrystalline materials. The uniaxial tensile simulation and experiment are conducted and the consistency of the two results verifies the value of the model for mechanical analysis.
KW - 3D polycrystalline modeling
KW - Crystal plastic constitutive
KW - Electron beam welding
KW - Metallography
KW - Nickel-based superalloys
KW - Random scatter algorithm
UR - https://www.scopus.com/pages/publications/85166949719
U2 - 10.1016/j.msea.2023.145507
DO - 10.1016/j.msea.2023.145507
M3 - 文章
AN - SCOPUS:85166949719
SN - 0921-5093
VL - 883
JO - Materials Science and Engineering: A
JF - Materials Science and Engineering: A
M1 - 145507
ER -