Carbide grain growth in cemented carbides

被引：71

作者：

Mannesson, Karin ^{[1
]}

Jeppsson, Johan ^{[1
]}

Borgenstam, Annika ^{[1
]}

Agren, John ^{[1
]}

机构：

[1] Royal Inst Technol, Div Phys Met, Dept Mat Sci & Engn, S-10044 Stockholm, Sweden

来源：

ACTA MATERIALIA | 2011年 / 59卷 / 05期

关键词：

Carbides; Grain growth; Abnormal grain growth; Sintering; Modeling; KINETICS; NUCLEATION; PHASE;

D O I：

10.1016/j.actamat.2010.11.056

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Abnormal grain growth is often observed in cemented carbides during sintering, but cannot be understood in terms of the classical LSW theory. In this work the grain growth behavior during sintering at 1430 degrees C is studied both experimentally and by means of computer simulations. A model based on several processes-2-D nucleation of growth ledges, mass transfer across the interface and long-range diffusion coupled in series-is formulated and the equations are solved numerically. Both computer simulations and experimental studies reveal that the grain growth behavior is strongly influenced by the initial size distribution. (c) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：1912 / 1923

页数：12

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