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Fe₃Al金属间化合物的价电子结构与其力学性能的关系

Relation of Valence Electron Structures and Mechanical Properties of Fe₃Al

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【Author】 PANG Lai-xue2, SUN Kang-ning 1,2, SUN Jia-tao2,LI Ming2(1.Key Laboratory of Liquid Structure and Heredity of Materials of Ministry of Education, Shandong University, Jinan Shandong 250061,China;2.Key Laboratory of Engineer Ceramics, Shandong University, Jinan Shandong 250061,China)

【机构】工程陶瓷山东省重点实验室；山东大学材料液态结构及遗传性教育部重点实验室；工程陶瓷山东省重点实验室山东济南250061；山东济南250061；山东济南250061；

【摘要】对长程有序金属间化合物Fe3Al(Fe 2 8Al)进行淬火处理 (有序度截留 )研究 ,处理后获得的B2结构对Fe3Al的力学性能产生了极大的影响 ,实验结果表明 ,处理后Fe3Al的硬度和强度有明显的下降。运用固体与分子经验电子理论 (EET)对比研究了Fe3Al金属间化合物的两种结构 (D0 3型和B2型 )价电子结构与其力学性能的关系 ,发现价电子结构与力学性能之间有很好的相关性。更多还原

【Abstract】 Long-range-order intermetallic compound of Fe 3Al(Fe-28Al)is processed by quenching(ordering interception).The imperfectly ordered B2 structure after ordered interception has significantly effect on the mechanical properties of Fe 3Al and the results show hardness and strength of Fe 3Al decrease.According to EET, relation of valence electron structures of two kinds of structures(type-D0 3 and type-B2)and mechanical properties are established.The results obtained well conform to the experimental data.更多还原