単結晶純鉄の応用による構造相転移の検討 : 分子動力学法を用いた塑性域の一軸引張試験解析

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This report describes molecular dyn, amics simulations of tensile tests of single crystal pure iron. There are a few experimental data of plastic region tensile tests of pure iron. In this simulation, strain range are elastic and plastic region, and to fracture point and temperature conditions are 100K to 1100K. In this report, different three kinds of models of tensile directions ([00l], [011] and [111]) are used. They are axis of rotational symmetry of bcc-type crystals. In the simulation results, stress-strain diagrams are important. They are different from polycrystal iron's in macro-scale. The stress-strain diagrams differ from tensile directions and temperatures. In tensile tests of [001] and [011] directions, we find second elastic regions after plastic regions. In second elastic regions, crystal structure types are changed from bcc-type. We find two types of structure phase trasitions.
公益社団法人精密工学会の論文
1999-12-05