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首页> 外文期刊>Journal of Materials Research >Characterization of microstructures, mechanical properties, and oxidation behavior of coherent A2 + L2_1 Fe-Al-Ti
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Characterization of microstructures, mechanical properties, and oxidation behavior of coherent A2 + L2_1 Fe-Al-Ti

机译:相干A2 + L2_1 Fe-Al-Ti的微观结构,力学性能和氧化行为的表征

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摘要

Two Fe-Al-Ti alloys with coherent αFe,Al (A2) + Fe_2AlTi (L2t_1 microstructures have been produced and the evolution of the microstructure with aging time has been studied by light optical and scanning electron microscopy and hardness measurements. The compressive flow strength, creep properties, brittle-to-ductile-transition temperatures (BDTT), and oxidation behavior of the alloys have been evaluated. The results show that the investigated alloys show good flow strength, high creep resistance, and good oxidation resistance. However, their BDDT is high compared to binary Fe-Al-based alloys and compared to other Fe-Al-Ti alloys no increase in creep resistance was achieved by generating coherent microstructures. The latter effect is due to the breakup of the coherent microstructures when the temperature varies because the compositions and consequently the volume fractions of the phases vary markedly depending on temperature.
机译:制备了两种具有相干αFe,Al(A2)+ Fe_2AlTi(L2t_1)组织的Fe-Al-Ti合金,并通过光学和扫描电子显微镜及硬度测量研究了该组织随着时效时间的演变。评估了合金的蠕变性能,脆性至韧性转变温度(BDTT)和氧化行为,结果表明所研究的合金具有良好的流动强度,高抗蠕变性和良好的抗氧化性。与二元Fe-Al基合金相比,BDDT较高,与其他Fe-Al-Ti合金相比,BDDT不会通过产生相干组织而提高抗蠕变性,这是由于温度变化时相干组​​织的破裂所致。因为相的组成以及因此的体积分数取决于温度而显着变化。

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  • 来源
    《Journal of Materials Research》 |2009年第11期|3412-3421|共10页
  • 作者单位

    Max-Planck-Institut fuer Eisenforschung GmbH, D-40237 Duesseldorf, Germany Salzgitter Mannesmann Forschung GmbH, D-47259 Duisburg, Germany;

    Max-Planck-Institut fuer Eisenforschung GmbH, D-40237 Duesseldorf, Germany;

    Institute for Materials and Joining Technology, Otto-von-Guericke University Magdeburg, D-39I04 Magdeburg, Germany;

  • 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
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