Insights into the ternary eutectic microstructure formed in intercolony regions in Al2O3-ZrO2(Y2O3) system

被引：11
作者：
Fu, Lian-sheng [1 ]
Chen, Guo-qing [1 ]
Fu, Xue-song [1 ]
Zhou, Wen-long [1 ]
机构：
[1] Dalian Univ Technol, Sch Mat Sci & Engn, Key Lab Solidificat Control & Digital Preparat Te, Dalian, Peoples R China
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2019年 / 102卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Al2O3/ZrO2(Y2O3); eutectic ceramic; Scheil equation; segregation behavior; MECHANICAL-PROPERTIES; GROWTH; SOLIDIFICATION; COMPOSITES; MORPHOLOGY; CERAMICS;
D O I：
10.1111/jace.15941
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Al2O3/ZrO2(Y2O3) pseudo-binary eutectic melt may solidify in the dendritic form at the low G/v ratio (thermal gradient G divided by growth rate v) associated with the Y2O3 microsegregation along the monovariant line. Especially, in the system with high Y2O3 content (>= 4.5 mol%), an Al2O3/ZrO2/YAG ternary eutectic in situ microstructure growing with a "plane front" will appear at the boundaries of dendritic structures. The volume fraction of the ternary eutectic increases with the increase in Y2O3 content. It was found that the amount of ternary eutectic can be well predicted by the Scheil equation (or nonequilibrium lever rule).
引用
收藏
页码：498 / 507
页数：10
相关论文
共 42 条
  • [1] Growth of Al2O3/ZrO2(Y2O3) eutectic rods by the laser floating zone technique:: effect of the rotation
    de Francisco, I
    Merino, RI
    Orera, VM
    Larrea, A
    Peña, JI
    [J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2005, 25 (08) : 1341 - 1350
  • [2] STRUCTURE OF DIRECTIONALLY SOLIDIFIED 2 PHASE TERNARY ALLOYS
    DUNN, EM
    YOUNG, KP
    FLEMINGS, MC
    [J]. METALLURGICAL TRANSACTIONS B-PROCESS METALLURGY, 1978, 9 (02): : 267 - 277
  • [3] Echigoya J, 2007, T JPN I MET, V27, P102
  • [4] Surface Modification of Al2O3-ZrO2(Y2O3) Eutectic Oxides by Laser Melting: Processing and Wear Resistance
    Ester, Francisco J.
    Merino, Rosa I.
    Pastor, Jose Y.
    Martin, Antonia
    Llorca, Javier
    [J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2008, 91 (11) : 3552 - 3559
  • [5] Tensile strength and microstructure of Al2O3-ZrO2 hypo-eutectic fibers
    Farmer, SC
    Sayir, A
    [J]. ENGINEERING FRACTURE MECHANICS, 2002, 69 (09) : 1015 - 1024
  • [6] SOLIDIFICATION OF CASTINGS
    FLEMINGS, MC
    [J]. SCIENTIFIC AMERICAN, 1974, 231 (06) : 88 - 95
  • [7] Microstructure and mechanical properties of Y2O3-doped melt-grown Al2O3-ZrO2 eutectic ceramic
    Fu, Lian-sheng
    Wang, Zhen
    Fu, Xue-song
    Chen, Guo-qing
    Zhou, Wen-long
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2017, 703 : 372 - 379
  • [8] Tailoring the morphology in Y2O3 doped melt-grown Al2O3/ZrO2 eutectic ceramic
    Fu, Liansheng
    Fu, Xuesong
    Chen, Guoqing
    Han, Wen-bo
    Zhou, Wenlong
    [J]. SCRIPTA MATERIALIA, 2017, 129 : 20 - 24
  • [9] Microstructure refinement of melt-grown Al2O3/YAG/ZrO2 eutectic composite by a new method: Melt superheating treatment
    Fu, Xuesong
    Chen, Guoqing
    Zu, Yufei
    Luo, Junting
    Zhou, Wenlong
    [J]. SCRIPTA MATERIALIA, 2013, 68 (09) : 731 - 734
  • [10] DIRECTIONAL SOLIDIFICATION OF AL-CU-MG MONOVARIANT ALLOYS
    GARMONG, G
    [J]. METALLURGICAL TRANSACTIONS, 1971, 2 (08): : 2025 - &
12345