Diffusion controlled creep in nanocrystalline materials under grain growth

被引:23
作者
Estrin, Y
Gottstein, G
Shvindlerman, LS
机构
[1] Tech Univ Clausthal, Inst Werkstoffkunde & Werkstotttech, D-38678 Clausthal Zellerfeld, Germany
[2] Rhein Westfal TH Aachen Klinikum, Inst Metallkunde & Met Phys, D-52074 Aachen, Germany
[3] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Moscow District, Russia
关键词
grain growth; vacancy generation; diffusion creep; Nabarro-Herring creep; Coble creep;
D O I
10.1016/j.scriptamat.2004.01.002
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
We consider diffusion controlled creep in nanostructured materials under the conditions when grain growth occurs concurrently. The Nabarro-Herring and Coble mechanisms are re-visited to calculate the effect of attendant vacancy generation on creep. Strain rate variation that resembles primary and secondary creep behaviour is predicted. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:993 / 997
页数:5
相关论文
共 11 条
[2]   Intermittent 'self-locking' of grain growth in fine-grained materials [J].
Estrin, Y ;
Gottstein, G ;
Shvindlerman, LS .
SCRIPTA MATERIALIA, 1999, 41 (04) :385-390
[3]   Thermodynamic effects on the kinetics of vacancy-generating processes [J].
Estrin, Y ;
Gottstein, G ;
Shvindlerman, LS .
ACTA MATERIALIA, 1999, 47 (13) :3541-3549
[4]   On the kinetics of grain growth inhibited by vacancy generation [J].
Estrin, Y ;
Gottstein, G ;
Rabkin, E ;
Shvindlerman, LS .
SCRIPTA MATERIALIA, 2000, 43 (02) :141-147
[5]   DIFFUSIONAL VISCOSITY OF A POLYCRYSTALLINE SOLID [J].
HERRING, C .
JOURNAL OF APPLIED PHYSICS, 1950, 21 (05) :437-445
[6]   Constitutive modelling of strength and plasticity of nanocrystalline metallic materials [J].
Kim, HS ;
Estrin, Y ;
Bush, MB .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2001, 316 (1-2) :195-199
[7]   Size-dependent grain-growth kinetics observed in nanocrystalline Fe [J].
Krill, CE ;
Helfen, L ;
Michels, D ;
Natter, H ;
Fitch, A ;
Masson, O ;
Birringer, R .
PHYSICAL REVIEW LETTERS, 2001, 86 (05) :842-845
[8]   Microstructure evolution during rolling of inert-gas condensed palladium [J].
Markmann, J ;
Bunzel, P ;
Rösner, H ;
Liu, KW ;
Padmanabhan, KA ;
Birringer, R ;
Gleiter, H ;
Weissmüller, J .
SCRIPTA MATERIALIA, 2003, 49 (07) :637-644
[9]  
NABARRO FRN, 1948, REPORT C STRENGTH ME
[10]  
Upmanyu M, 1998, INTERFACE SCI, V6, P287, DOI 10.1023/A:1008653704896