ナノ多結晶体の最大強度の温度依存性に関する原子シミュレーション(J08-5 ナノ構造体,J08 原子系の計算力学シミュレーション) [in Japanese] The influence of temperature on the maximum strength for nanocrystallime materials by molecular dynamics simulations [in Japanese]
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The temperature dependence of the grain size at which the material is strongest for nanocrystalline metals is studied by molecular dynamics simulation. Nanocrystalline aluminum models with grain size ranging between 2 nm and 80 nm are considered. For each model, tensile deformation tests are performed at three different temperatures, 100 K, 300 K and 500 K. As a result, the maximum strength appears in the region around 20〜40 nm and the grain size of the strongest nanocrystalline metals becomes large as temperature goes up, because temperature dependence of the resistance to intergranular deformation is larger than that of intragranular deformation.
- The proceedings of the JSME annual meeting
The proceedings of the JSME annual meeting 2004.6(0), 239-240, 2004
The Japan Society of Mechanical Engineers