• CN:11-2187/TH
  • ISSN:0577-6686

›› 2002, Vol. 38 ›› Issue (12): 149-152.

• 论文 • 上一篇    

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Co、Al对二次硬化钢微结构影响的穆谱研究

刘贵立;张国英;曾梅光;钱存富   

  1. 沈阳工业大学材料学院;东北大学
  • 发布日期:2002-12-15

INVESTIGATION ON INFLUENCE OF Co、Al ON MICROSTRUCTURES OF SECONDARY-HARDENING STEEL BY M?SSBAUER SPECTROSCOPY

Liu Guili;Zhang Guoying;Zeng Meiguang;Qian Cunfu   

  1. Shenyang University of Technology Northeastern University
  • Published:2002-12-15

摘要: 用穆谱技术研究了Co、Al元素对二次硬化钢微结构的影响,发现Co在二次硬化钢中的分布会影响Ni、Cr、Mo原子在其中的分布;Co、Al都促进奥氏体向马氏体转变,减少残余奥氏体量,都促进合金碳化物的形成,增加其析出量。因此在无Co钢中为提高强度可加入适量的Al元素。

关键词: Co;Al在钢中的作用, M?ssbauer谱, 超精细场, 合金元素分布, 包络算法, 经验模态分解, 模态混叠, 瞬时频率估计

Abstract: The influence of Co,Al on the microstructures of high Ni-Co secondary-hardening steel is studied by M?ssbauer spectroscopy.Results show that distribution of alloying elements Ni,Cr,Mo are influenced by mass fraction of Co in martensite.Both Co and Al elements promote the translation of austenite to martensite during quenching,the amount of austenite decreases with increasing mass of fraction of Co or Al in steel,and Co or Al element also promotes the formation of alloying carbide during tempering,the quantity carbide increases with increasing mass of fraction of Co or Al in steel.

Key words: Hyperfine-field Alloying element distribution Influence of Co or Al on the microstructures of high Ni-Co secondary-hardening steel, M?ssbauer spectrum, envelope algorithm, Instantaneous frequency estimation, mode mixing, EMD

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