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Author:

Sun, Fei (Sun, Fei.) | Zhang, Jianxin (Zhang, Jianxin.) | Liu, Pan (Liu, Pan.) | Feng, Qiang (Feng, Qiang.) | Han, Xiaodong (Han, Xiaodong.) (Scholars:韩晓东) | Mao, Shengcheng (Mao, Shengcheng.) (Scholars:毛圣成)

Indexed by:

EI Scopus SCIE

Abstract:

By means of high resolution transmission electron microscopy (HRTEM) and high-angle annular dark-field image technique (HAADF), morphological of plate-shaped sigma phase and interfacial characteristics between plate-shaped sigma phase and gamma phase in Ni-based single crystal superalloys have been studied. On the basis of HRTEM observations, an atomic structural interface between sigma phase and gamma phase with a step has been proposed. sigma Phase has the relationship of [001](gamma)//[11 (2) over bar](sigma), ((2) over bar 20)(gamma)//((1) over bar 10)(sigma), ((2) over bar(2) over bar0)(gamma)//(111)(sigma); [011](gamma)//[110](sigma), (1 (1) over bar1)(gamma)//(00 (1) over bar)(sigma) with the gamma phase. The compositional characteristics of the sigma phase which are rich in more heavy elements, such as W, Re, Cr and Ru, has also been clearly revealed by the HAADF imaging technique and Energy Dispersive X-Ray Spectroscopy (EDS) mapping analysis. (C) 2012 Elsevier B.V. All rights reserved.

Keyword:

HAADF Segregation Superalloys HRTEM Interface structure

Author Community:

  • [ 1 ] [Sun, Fei]Shandong Univ, Minist Educ, Key Lab Liquid Struct & Hered Mat, Jinan 250061, Peoples R China
  • [ 2 ] [Zhang, Jianxin]Shandong Univ, Minist Educ, Key Lab Liquid Struct & Hered Mat, Jinan 250061, Peoples R China
  • [ 3 ] [Liu, Pan]Beijing Univ Technol, Inst Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
  • [ 4 ] [Han, Xiaodong]Beijing Univ Technol, Inst Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
  • [ 5 ] [Mao, Shengcheng]Beijing Univ Technol, Inst Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
  • [ 6 ] [Feng, Qiang]Univ Sci & Technol Beijing, Natl Ctr Mat Serv Safety, Beijing 100083, Peoples R China
  • [ 7 ] [Feng, Qiang]Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

Reprint Author's Address:

  • [Zhang, Jianxin]Shandong Univ, Minist Educ, Key Lab Liquid Struct & Hered Mat, Jinan 250061, Peoples R China

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Source :

JOURNAL OF ALLOYS AND COMPOUNDS

ISSN: 0925-8388

Year: 2012

Volume: 536

Page: 80-84

6 . 2 0 0

JCR@2022

ESI Discipline: MATERIALS SCIENCE;

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 31

SCOPUS Cited Count: 33

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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