L1_2型Al_3Ti合金室温变形超位错的分解及计算机图像模拟

金属学报, 1995, 31(7): 294-299.

L1_2型Al_3Ti合金室温变形超位错的分解及计算机图像模拟

戎咏华 , 吴晓华 , 陈小夫 , 陈世朴 , 胡赓祥

上海交通大学

关键词：Ｌ１_２型Ａｌ_３Ｔｉ合金 , computer image simulation , superlattice intrinsic stacking fault(SISF)

TEM AND COMPUTER IMAGE SIMULATIONS ON SUPERDISLOCATIONS IN ROOM TEMPERATURE DEFORMED Al_(67)Mn_8Ti_(25) ALLOY

RONG Yonghua , WU Hiaohua , CHEN Hiaofu , CHEN Shipu , HU Gengxiang

Keywords： :L1_2-type Al_3Ti alloy , 计算机图像模拟 , 超点阵内禀层错

利用透射电子显微镜和计算机图像模拟技术研究了Ll型Ａｌ３Ｔｉ合金室温变形的位错核心结构，结果表明：ａ（１１０）超位错在｛１１１｝面上分解成两个ａ／３（１１２）型超偏位错，其间为超点阵内禀层错

TEM investigation associated with computer image simulations were conducted to determine the dissociation of superdislocations in the room temperature deformed Ll2-type Al3Ti alloy.It is determined that the a(110) superdislocations dissociated into pairs of a/3(112) superpartials with SISF between them.The theoretical and experimental micrographs are in good agreement under various diffraction conditions.Correspondent:HU Gengxiang,professor,(Department of Materials Science,Shanghai Jiaolong University,Shanghai 200030)

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