• CN:11-2187/TH
  • ISSN:0577-6686

›› 1998, Vol. 34 ›› Issue (4): 1-6,14.

• 论文 •    下一篇

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锰低温钢中锰及合金元素的不平衡偏聚

孙大涌;薛侃时;徐佐仁;王滨;张静江;李晋   

  1. 机械工业部机械科学研究院;机械工业部上海材料研究所;上海交通大学
  • 发布日期:1998-07-01

NON-EQUILIBRIUM SEGREGATION OF MANGANESE AND ALLOYING ELEMENTS IN Mn CRYOGENIC STEELS

Sun Dayong;Xue Kanshi;Xu Zuoren;Wang Bin;Zhang Jingjiang;Li Jin   

  1. Research Institute of Machinery Science and Technology, MMI Shanghai Jiaotong University Shanghai Research Institute of Materials, MMI
  • Published:1998-07-01

摘要: 系统研究了锰低温钢中锰在奥氏体晶界上的不平衡偏聚。研究了锰的质量分数、固溶处理温度和淬火冷却速度对锰不平衡偏聚的影响和不形成锰偏聚的条件。研究了锰低温钢中其他合金元素(铬、钼、硼)在奥氏体晶界上不平衡偏聚的特点及对锰偏聚的影响。用透射电镜的χ射线能量失散谱法(TEM-EDS)和俄歇能谱法(AES)分析锰的偏聚。用径迹显微照相(PTA)技术显示硼原子的显微分布状态。讨论了锰及其他合金元素不平衡偏聚的动力学过程。讨论的论断和试验结果取得了较好的一致。

关键词: 不平衡偏聚, 低温钢, 固溶处理, 合金元素, 锰钢, 表面织构, 干摩擦, 激光加工, 摩擦磨损试验

Abstract: The non-equilibrium segregation of manganese to austenite grain boundaries in Mn cryogenic steels is investigated. It includes the effect of manganese content, solution treatment temperature and cooling rate on the non-equilibrium segregation of manganese and condition of segregation formation. The segregation of alloying elements (Cr, Mo, B) and the effect of these elements on the manganese segregation is investigated. The non-equilibrium segregation of manganese is determined by both AES and TEM-EDS. And the micro-distribution of B atom is showed by PTA technique. The kinetic process of non-equilibrium segregation of manganese and alloying elements is discussed. Reasonable agreement is found between the prediction of the discussion and experimental results.

Key words: Alloying elements, Mn steel Cryogenic steels, Non-equilibrium segregation, Solution treatment, Dry sliding, Friction and wear tests, Laser processing, Surface texture

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