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Author:

Jin, Huixin (Jin, Huixin.) | Zhang, Jianxin (Zhang, Jianxin.) | Zhang, Youjian (Zhang, Youjian.) | Zhang, Wenyang (Zhang, Wenyang.) | Ma, Shiyu (Ma, Shiyu.) | Mao, Shengcheng (Mao, Shengcheng.) (Scholars:毛圣成) | Du, Yiqun (Du, Yiqun.) | Wang, Zihan (Wang, Zihan.) | Qin, Jingyu (Qin, Jingyu.) | Wang, Qi (Wang, Qi.)

Indexed by:

EI Scopus SCIE

Abstract:

Observation regarding the SEM and TEM images of the precipitation and growth morphology of topologically close-packed (TCP) phase indicates that the orientation relationships between the TCP phase with different morphologies and the matrix are not that similar. Concerning with this phenomenon, via DFT calculations, the possible interface structures between the sigma phase and the matrix gamma as well as the mu phase and the matrix gamma have been established and discussed under different orientation relationships. The experimental characterizations and simulated calculations reveal that the orientation relationships between TCP phase and the matrix determine interplanar spacing mismatches and the interface energy of the low index dense arrangement interfaces of the two phases, while the two parameters exert influence on the growth and morphology of TCP phase. The interface energy of the sigma/gamma interface with (111)(gamma)/(001)(sigma) orientation is small while its interplanar spacing mismatch is large, so the TCP phase under this orientation relationship tend to take planar expansion along interface instead of growing layer by layer parallel to the plane, giving rise to plate-like morphology. However, those of the sigma/gamma with (110)(gamma)//(1-10)sigma and the mu/gamma with (110)(gamma)//(111)(mu) are just the opposite, so the TCP phases under these orientations tend to grow layer by layer instead of expand along plane, forming needle-like or rod-like morphology eventually.

Keyword:

Density functional theory Intermetallics Electron microscopy Microstructure Aero-engine components Interfaces

Author Community:

  • [ 1 ] [Jin, Huixin]Shandong Univ, Sch Mat Sci & Engn, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ, Jinan 250061, Peoples R China
  • [ 2 ] [Zhang, Jianxin]Shandong Univ, Sch Mat Sci & Engn, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ, Jinan 250061, Peoples R China
  • [ 3 ] [Zhang, Youjian]Shandong Univ, Sch Mat Sci & Engn, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ, Jinan 250061, Peoples R China
  • [ 4 ] [Zhang, Wenyang]Shandong Univ, Sch Mat Sci & Engn, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ, Jinan 250061, Peoples R China
  • [ 5 ] [Du, Yiqun]Shandong Univ, Sch Mat Sci & Engn, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ, Jinan 250061, Peoples R China
  • [ 6 ] [Wang, Zihan]Shandong Univ, Sch Mat Sci & Engn, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ, Jinan 250061, Peoples R China
  • [ 7 ] [Qin, Jingyu]Shandong Univ, Sch Mat Sci & Engn, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ, Jinan 250061, Peoples R China
  • [ 8 ] [Mao, Shengcheng]Beijing Univ Technol, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100024, Peoples R China
  • [ 9 ] [Ma, Shiyu]Hangzhou Dianzi Univ, Coll Mat & Environm Engn, Hangzhou 310018, Peoples R China
  • [ 10 ] [Zhang, Jianxin]Jiangsu DeLong Nickel Ind Co Ltd, Xiangshui 224631, Jiangsu, Peoples R China
  • [ 11 ] [Wang, Qi]Jiangsu DeLong Nickel Ind Co Ltd, Xiangshui 224631, Jiangsu, Peoples R China

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Source :

MATERIALS CHARACTERIZATION

ISSN: 1044-5803

Year: 2021

Volume: 183

4 . 7 0 0

JCR@2022

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:116

JCR Journal Grade:1

Cited Count:

WoS CC Cited Count: 14

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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