• CN：11-2187/TH
  • ISSN：0577-6686
机械工程学报

›› 2005, Vol. 41 ›› Issue (1): 33-36.

• 论文 • 上一篇    下一篇

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Fe3Al金属间化合物的有序度截留与力学性能

庞来学;孙康宁;范润华;毕见强;王中奎   

  1. 山东大学材料液态结构及其遗传性教育部重点实验室;山东省农机局农机鉴定站
  • 发布日期:2005-01-15

RELATIONSHIP BETWEEN ORDER DEGREE INTERCEPTED AND MECHANICAL PROPERTIES OF Fe3Al

Pang Laixue;Sun Kangning;Fan Runhua;Bi Jianqiang;Wang Zhongkui   

  1. Key Laboratory of Liquid Structure and Heredity of Materials, Ministry of Education,Shandong University Shandong Agricultural Machinery Critical Department
  • Published:2005-01-15

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摘要： 运用固体与分子经验电子理论(EET)对Fe3Al的两种晶体结构DO3和B2的滑移能进行了计算，结果表明B2结构在室温下具有较好的塑性和较低的强度。据此对长程有序金属间化合物Fe3Al进行有序度截留(淬火处理)研 究。X射线衍射和强度试验表明：有序度截留可以明显截留Fe3Al的有序度，截留后的试样强度和硬度下降，材料的力学性能得到改善。

关键词: Fe3Al, 滑移能, 力学性能, 有序度截留

Abstract: The glide energy B2-type and DO3-type in Fe3Al are calculated based on the empirical electron theory of solids and molecules (EET); the results indicate that B2-structure exhibits good ductility properties and low strength at ambient temperatures. The long-range-order intermetallic Fe3Al is investigated by order degree intercepted (quenched) technique. The results of XRD and compression-resistance show that Fe3Al with an imperfectly ordered B2 structure after order degree intercepted has low strength and low stiff. The mechanical properties are improved.

Key words: Fe3Al, Glide energy, Mechanical properties, Order degree intercepted

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