書誌事項
- タイトル別名
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- Investigation of nucleation site and nucleation mechanism of martensite transformation by molecular dynamics simulation
抄録
<p>In order to investigate the nucleation mechanism of deformation-induced martensitic transformation, a polycrystalline model with fcc structure was tensile deformed at various temperatures via molecular dynamics simulations. The macroscopic nucleation stress of martensitic transformation increased linearly with temperature below the MσS point, but deviated from the linear relationship above the MσS point. The deviation is caused by the effect of lattice defects by the plastic deformation. In order to clarify the nucleation mechanism, the microscopic nucleation stress and the defect proportion at the nucleation site are directly measured, and we found three possible nucleation mechanisms: nucleation by crossing the energy barrier due to stress concentration in the defect-free region, nucleation by crossing the energy barrier due to stress concentration at the grain boundary, and nucleation at low stress due to the lowering of the energy barrier by the grain boundary structure.</p>
収録刊行物
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- M&M材料力学カンファレンス
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M&M材料力学カンファレンス 2021 (0), OS0310-, 2021
一般社団法人 日本機械学会
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キーワード
詳細情報 詳細情報について
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- CRID
- 1390291767733723520
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- ISSN
- 24242845
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
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- 抄録ライセンスフラグ
- 使用不可