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首页> 外文期刊>Journal of Materials Science >Ball milling of stainless steel scrap chips to produce nanocrystalline powder
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Ball milling of stainless steel scrap chips to produce nanocrystalline powder

机译：球磨不锈钢废屑产生纳米晶粉末

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摘要

Nanocrystalline stainless steel powder was produced by ball milling of austenitic stainless steel scrap chips. The structural and morphological changes of samples during ball milling and after subsequent heat treatment were investigated by X-ray diffractometery, scanning electron microscopy and microhardness measurements. During ball milling the austenite in as-received chips partially transformed to the martensite phase with nanoscale size grains of ～15 nm. This structure exhibited high microhardness value of about 850 Hv which is much higher than that for original samples. The deformation-induced martensite partially transformed to austenite after annealing at 700 °C for 1 h reducing the hardness of powder particles.
机译：纳米晶不锈钢粉末是通过奥氏体不锈钢废屑的球磨生产的。通过X射线衍射仪，扫描电子显微镜和显微硬度测量研究了球磨过程中以及随后热处理后样品的结构和形态变化。在球磨过程中，原样中的奥氏体部分转变为纳米级晶粒，晶粒尺寸约为15 nm。这种结构表现出约850 Hv的高显微硬度值，远高于原始样品的显微硬度值。在700°C退火1 h后，形变诱发的马氏体部分转变为奥氏体，从而降低了粉末颗粒的硬度。

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  • 来源
    《Journal of Materials Science》 |2007年第8期|2844-2848|共5页
  • 作者

    M. H. Enayati; M. R. Bafandeh; S. Nosohian;

  • 作者单位

    Department of Materials Engineering Isfahan University of Technology Isfahan 84156-83111 Iran;

    Department of Materials Engineering Isfahan University of Technology Isfahan 84156-83111 Iran;

    Department of Materials Engineering Isfahan University of Technology Isfahan 84156-83111 Iran;

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