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首页> 外文期刊>Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science >Origin of Porosity in Oxide-Dispersion-Strengthened Alloys Produced by Mechanical Alloying
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Origin of Porosity in Oxide-Dispersion-Strengthened Alloys Produced by Mechanical Alloying

机译：机械合金化生产的氧化物弥散强化合金中的气孔起源

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摘要

Oxide-dispersion-strengthened (ODS) alloys produced by mechanical alloying (MA) are very prone to the occurrence of porosity. The reason for this has not been fully understood so far. In this work, a model ferritic ODS alloy has been examined by optical microscopy and scanning electron microscopy in both the powder form and the consolidated condition. Submicron-sized pores have been found in the as-mechanically alloyed powder and in the consolidated alloy. Moreover pores can be observed in loose powder particles annealed at 1000 deg C and 1100 deg C. Based on these results, it has been suggested that the MA process might be largely responsible for the porosity problem in ODS alloys.
机译：通过机械合金化（MA）生产的氧化物弥散强化（ODS）合金非常容易出现气孔。到目前为止，其原因尚未完全理解。在这项工作中，已通过光学显微镜和扫描电子显微镜以粉末形式和固结状态对模型铁素体ODS合金进行了检查。在机械合金化粉末和固结合金中发现了亚微米大小的孔。此外，在1000℃和1100℃退火的松散粉末颗粒中可以观察到孔。基于这些结果，表明MA工艺可能是造成ODS合金孔隙率问题的主要原因。

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