Effect of chemical composition on particle morphology of topologically close-packed precipitates in a Ni-based single crystal superalloy - 文章详情页

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EI Scopus SCIE

摘要：

Topologically　close-packed　(TCP)　phases　in　Ni-based　single　crystal　superalloys　are　known　to　exhibit　different　morphologies　and　orientation　relationships　within　the　matrix.　This　study　investigated　the　influence　of　chemical　composition　on　lattice　parameters,　which　in　turn　determine　the　interface　lattice　misfit　between　TCP　phase　and　matrix　and　thus　shape　and　orientation　of　the　TCP　phase.　In　this　study,　TCP　phase　particles　of　different　morphologies　were　formed　by　ageing　at　different　temperatures.　The　level　of　TCP-phase　element　enrichment　was　found　to　increase　with　increasing　growth　time　and　ageing　temperature,　and　thus　leads　to　a　same　evolution　behavior　of　the　atomic　volume.　(C)　2018　Acta　Materialia　Inc.　Published　by　Elsevier　Ltd.　All　rights　reserved.

关键词：

TCP phase Transmission electron microscopy Nickel Superalloy Precipitation

作者机构：

[ 1 ] [Long, Haibo]Beijing Univ Technol, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
[ 2 ] [Mao, Shengcheng]Beijing Univ Technol, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
[ 3 ] [Deng, Qingsong]Beijing Univ Technol, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
[ 4 ] [Chen, Yanhui]Beijing Univ Technol, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
[ 5 ] [Zhang, Ze]Beijing Univ Technol, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
[ 6 ] [Han, Xiaodong]Beijing Univ Technol, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
[ 7 ] [Liu, Yinong]Univ Western Australia, Sch Mech & Chem Engn, Perth, WA 6009, Australia
[ 8 ] [Wei, Hua]Zhejiang Univ, Ctr Centrifugal Hypergrav Res, Hangzhou 310058, Zhejiang, Peoples R China
[ 9 ] [Zhang, Jianxin]Shandong Univ, Key Lab Liquid Struct & Hered Mat, Minist Educ, Jinan 250061, Shandong, Peoples R China
[ 10 ] [Ma, Shiyu]Shandong Univ, Key Lab Liquid Struct & Hered Mat, Minist Educ, Jinan 250061, Shandong, Peoples R China
[ 11 ] [Zhang, Ze]Zhejiang Univ, State Key Lab Silicon Mat, Dept Mat Sci & Engn, Hangzhou 310058, Zhejiang, Peoples R China

通讯作者信息：

毛圣成
[Mao, Shengcheng]Beijing Univ Technol, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China

电子邮件地址：

scmao@bjut.edu.cn

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