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首页> 外文期刊>Journal of Materials Research >Quantification of hardening in Fe-Mn master alloys prepared by a mechanical alloying process via nanoindentation experiments
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Quantification of hardening in Fe-Mn master alloys prepared by a mechanical alloying process via nanoindentation experiments

机译：通过纳米压痕实验通过机械合金化工艺制备的Fe-Mn中间合金中的硬化量化

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摘要

During the mechanical alloying of a prealloyed Fe-Mo and Mn powder, a large amount of energy is involved because of continuous collisions between the grinding media and the powder. The energy is transformed into massive plastic deformation and solid solution formation. Both phenomena increase in the hardness of the milled particles. To quantify the contribution of both effects to the hardening, nanoindentation experiments were performed on the as-milled powder and after an annealing treatment, based on the assumption that the thermal process would eliminate the lattice distortions due to plastic deformation. When the indentation profile was measured, a significant pileup around the perimeter of the indentation track was observed; therefore, it was necessary to measure the actual amount of contact area by atomic force microscopy. Thus, parameters of mechanical powders can be determined, giving to the conclusion that 40% of the hardening induced can be attributed to the plastic strain.
机译：在预合金化的Fe-Mo和Mn粉末的机械合金化过程中，由于研磨介质和粉末之间的连续碰撞而涉及大量能量。能量转化为大量的塑性变形和固溶体形成。两种现象都增加了研磨颗粒的硬度。为了量化这两种作用对硬化的影响，基于热过程将消除由于塑性变形引起的晶格畸变的假设，对研磨后的粉末以及经过退火处理后进行了纳米压痕实验。当测量压痕轮廓时，观察到压痕轨迹周边的明显堆积；因此，有必要通过原子力显微镜测量实际的接触面积。因此，可以确定机械粉末的参数，得出的结论是，所引起的硬化的40％可以归因于塑性应变。

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  • 来源
    《Journal of Materials Research》 |2011年第14期|p.1726-1733|共8页
  • 作者

    Jose Sicre-Artalejo; Monica Campos; Jon M. Molina-Aldareguia; Jose M. Torralba;

  • 作者单位

    Department of Materials Science and Engineering, Carlos 111 University, 28911 Leganes, Spain;

    Department of Materials Science and Engineering, Carlos 111 University, 28911 Leganes, Spain;

    IMDEA-Materials Institute, c/Profesor Aranguren s, 28040 Madrid, Spain;

    Department of Materials Science and Engineering, Carlos III University, 28911 Leganes, Spain IMDEA-Materials Institute, 28918 Leganes, Spain;

  • 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);
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