Large deformation simulations of cyclic displacement instabilities in thermal barrier systems

被引：56
作者：
He, MY [1 ]
Hutchinson, JW
Evans, AG
机构：
[1] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA
[2] Harvard Univ, Div Engn & Appl Sci, Cambridge, MA 02138 USA
[3] Princeton Univ, Princeton Mat Inst, Princeton, NJ 08540 USA
来源：
ACTA MATERIALIA | 2002年 / 50卷 / 05期
关键词：
physical vapor deposition (PVD); thermal barrier systems; computer simulation; layered materials; fatigue;
D O I：
10.1016/S1359-6454(01)00406-2
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The cyclic displacement instability exhibited by a thermally grown oxide (TGO) in a thermal barrier system has been simulated using a scheme that embodies large-scale thickening. The investigation has three main objectives. (i) A sensitivity study that probes the influence of the thermo-mechanic properties of the bond coat. It uses properties that closely resemble those relevant to actual bond coat materials. (ii) Explore the influence of the size of the imperfections present on the bond coat surface and address the critical size below which the instability is suppressed. (iii) A determination of the influence of TGO growth kinetics ranging between linear and parabolic. (C) 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：1063 / 1073
页数：11
相关论文
共 20 条
  • [1] Stress and shape evolution of irregularities in oxide films on elastic-plastic substrates due to thermal cycling and film growth
    Ambrico, JM
    Begley, MR
    Jordan, EH
    [J]. ACTA MATERIALIA, 2001, 49 (09) : 1577 - 1588
  • [2] BALINT DS, UNPUB
  • [3] Mechanisms controlling the durability of thermal barrier coatings
    Evans, AG
    Mumm, DR
    Hutchinson, JW
    Meier, GH
    Pettit, FS
    [J]. PROGRESS IN MATERIALS SCIENCE, 2001, 46 (05) : 505 - 553
  • [4] Mechanics-based scaling laws for the durability of thermal barrier coatings
    Evans, AG
    He, MY
    Hutchinson, JW
    [J]. PROGRESS IN MATERIALS SCIENCE, 2001, 46 (3-4) : 249 - 271
  • [5] Mechanism of spallation in platinum aluminide/electron beam physical vapor-deposited thermal barrier coatings
    Gell, M
    Vaidyanathan, K
    Barber, B
    Cheng, J
    Jordan, E
    [J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1999, 30 (02): : 427 - 435
  • [6] The ratcheting of compressed thermally grown thin films on ductile substrates
    He, MY
    Evans, AG
    Hutchinson, JW
    [J]. ACTA MATERIALIA, 2000, 48 (10) : 2593 - 2601
  • [7] HEMKER K, UNPUB
  • [8] HILLERY R, 1996, NRC REPORT COATINGS
  • [9] A numerical model for the cyclic instability of thermally grown oxides in thermal barrier systems
    Karlsson, AM
    Evans, G
    [J]. ACTA MATERIALIA, 2001, 49 (10) : 1793 - 1804
  • [10] KARLSSON AM, IN PRESS ACTA MAT
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