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首页> 外文期刊>ISIJ international >Variant selection in mechanically-induced martensitic transformation of metastable austenitic steel
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Variant selection in mechanically-induced martensitic transformation of metastable austenitic steel

机译：亚稳态奥氏体钢机械诱导马氏体相变的选择

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摘要

The orientation relationship between the parent austenite and the inherited martensite which had been mechanically-induced transformed under both uniaxial tension and compression state was observed by an electron backscattered diffraction (EBSD). The probability of variant selection was assessed with the interaction energy between externally applied stress and lattice deformation for each martensitic variant. The interaction energy was calculated from the Bain deformation and the invariant shear strain on the basis of K-S orientation relationship. It could be confirmed that the calculated interaction energy for the transformed martensitic variant has the relatively very large negative value. The negative value of the interaction energy under the tensile and compressive stress state is related with the favorable interaction with the applied stress and it means that the probability for some specific variants to be selected becomes increased due to the external stress.
机译：通过电子背散射衍射（EBSD）观察到了在单轴拉伸和压缩状态下都发生了机械诱导相变的母体奥氏体与遗传马氏体之间的取向关系。通过每个马氏体变体的外部施加应力与晶格变形之间的相互作用能来评估变体选择的可能性。根据贝氏变形和不变剪切应变，根据K-S取向关系计算相互作用能。可以确认，计算出的转变后的马氏体变体的相互作用能具有相对非常大的负值。在拉伸和压缩应力状态下，相互作用能的负值与施加应力的良好相互作用有关，这意味着由于外部应力，选择某些特定变体的可能性增加。

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  • 来源
    《ISIJ international》 |2005年第8期|p.1217-1219|共3页
  • 作者

    S. H. LEE; J.-Y. KANG; H. N. HAN;

  • 作者单位

    School of Materials Science and Engineering, Seoul National University, Sillim 9-dong, Gwanak-gu, Seoul 151-744, Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 黑色金属材料;
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