Steady-state creep in an inclusion bearing material by plastic accommodation
Steady-state creep in an inclusion bearing material by plastic accommodation
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通过塑性调节在含夹杂物材料中实现稳态蠕变
DOI：
10.1016/s1359-6454(98)00119-0
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发表时间：
1998
期刊：
影响因子：
9.4
通讯作者：
S. Kodama
中科院分区：
文献类型：
--
作者：
E. Sato;T. Ookawara;K. Kuribayashi;S. Kodama
本文研究了含夹杂物材料在高温外载作用下的应力松弛。独立于Mori等人的分析（Acta Mater.，1997，45，429），通过变分原理分析和有限元法（FEM），已经确定材料显示出稳态蠕变，即使只有基质塑性流动（多轴幂律蠕变）操作。讨论了引起稳态蠕变的非均匀应力分布特性。稳态蠕变速率的夹杂物的纵横比和体积分数的依赖关系也已通过有限元分析。
The stress relaxation in an inclusion bearing material at high temperatures under an external load has been examined. Independently from the analysis by Mori et al. (Acta mater., 1997, 45, 429), it has been ascertained that the material reveals steady-state creep even with only matrix plastic flow (multiaxial power-law creep) operating, through both variational principles analysis and finite element method (FEM). The characteristic of nonuniform stress distribution, which brings about steady-state creep, has been discussed. The dependence of the steady-state creep rate on inclusion aspect ratio and volume fraction has been also obtained through FEM analysis.