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首页> 外文期刊>Materials & design >Role of A_2 and A_(50) process on the oxide dispersion strengthened ferritic alloy fabricated by mechanical alloying
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Role of A_2 and A_(50) process on the oxide dispersion strengthened ferritic alloy fabricated by mechanical alloying

机译：A_2和A_（50）工艺在机械合金化制备氧化物弥散强化铁素体合金中的作用

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摘要

This study has investigated the effects of adding occasion of Stearic Acid (SA) on the characteristics of powder and properties of bulk with nominal composition of Fe-12Cr-2.5 W-0.4Ti-0.3Y_2O_3, which was fabricated by mechanical alloying and vacuum sintering. SA was milling with the powder mixture with 50 h (added before milling, A_(50)) or 2 h (added after 48 h milling, A_2). The resulted showed: SA could inhibit the agglomeration and retard the alloying process. Powders through A_2 process achieved alloying with high powder yield, while the A_(50) powders presented alloying extent, and the yield of A_0 powder presented low powder yield. SA added in A_(50) was almost dissolved into the matrix for the long milling duration, but SA added in A_2 was mostly volatilized during heating. A_2 bulk alloy was of better strength for the finer, more uniform grain and second phase and higher density than A_(50) bulk.
机译：本研究研究了通过机械合金化和真空烧结制备的硬脂酸（SA）的添加次数对标称成分为Fe-12Cr-2.5 W-0.4Ti-0.3Y_2O_3的粉末特性和块体性能的影响。 。 SA用粉末混合物研磨50小时（研磨前加入，A_（50））或2小时（研磨48小时后加入，A_2）。结果表明：SA可以抑制团聚并延缓合金化过程。通过A_2工艺获得的粉末合金化率高，而A_（50）粉末具有合金化程度，而A_0粉末的产率低。在较长的研磨时间内，添加到A_（50）中的SA几乎溶解在基质中，但是添加到A_2中的SA在加热过程中大部分挥发。与A_（50）块相比，A_2块状合金具有更好的强度，可形成更细，更均匀的晶粒和第二相，并具有更高的密度。

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  • 来源
    《Materials & design》 |2011年第5期|p.2821-2826|共6页
  • 作者

    Zhenhua Yao; Weihao Xiong; Jun Qu; Shaojiang Lin;

  • 作者单位

    State Key Laboratory of Material Processing and Die & Mould Technology, Hua Thong University of Technology, Wuhan 430074, China;

    State Key Laboratory of Material Processing and Die & Mould Technology, Hua Thong University of Technology, Wuhan 430074, China;

    State Key Laboratory of Material Processing and Die & Mould Technology, Hua Thong University of Technology, Wuhan 430074, China;

    State Key Laboratory of Material Processing and Die & Mould Technology, Hua Thong University of Technology, Wuhan 430074, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    ferritic alloy; mechanical alloying; microstructure;

    机译：铁素体合金机械合金化;微观结构;

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