金属学报  1995, Vol. 31 Issue (24): 550-554

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具有重叠衍射峰低对称晶系材料的定量织构分析

王沿东;徐家桢

东北大学

QUANTITATIVE TEXTURE ANALYSIS FOR LOW SYMMETRY POLYCRYSTALLINE MATERIALS WITH OVERLAPPING DIFFRACTION PEAKS

WANG Yandong; XU Jiazhen(Northeastern University; Shenyang 110006)

王沿东;徐家桢. 具有重叠衍射峰低对称晶系材料的定量织构分析[J]. 金属学报, 1995, 31(24): 550-554.
, . QUANTITATIVE TEXTURE ANALYSIS FOR LOW SYMMETRY POLYCRYSTALLINE MATERIALS WITH OVERLAPPING DIFFRACTION PEAKS[J]. Acta Metall Sin, 1995, 31(24): 550-554.

摘要 参考文献 相关文章 Metrics 全文: PDF(352 KB)   摘要: 本文给出了具有重叠衍射峰的低对称晶系材料织构定量分析的最新细化方法：将熵最大原则直接引入到以极图数据为约束条件的最小二乘方程中，实现了最小极密度差与熵最大两种优化的同步进行，四方晶系材料的纤维织构模拟例子表明：即使在很锐的织构组分时，依据本文的方法也可以从较少数目极图数据获得准确的织构矢量． 关键词 ： 织构分析,  低对称晶系材料,  重叠衍射峰,  熵最大原则     Abstract：A new algorithm of quantitative texture analysis(QTA), i. e. modified maximum entropy method(MMEM), is proposed and applied to the determination of textures in polycrystalline samples of lower crystal symmery with overlapping diffraction peaks. By introducing directly maximum entropy principle into the least square equations of pole figure inversion, the least square errors between measured and recalculated pole figures, and the optimum of maximum texture entropy may be simultaneously satisfied. Thus, the maximum entropy principle is applied to the entire processes of QTA in frame of harmonic method(HV). The simulated results of ideal fiber texture show that the precise texture vector for the materials with smooth or sharp textures will be obtained by the MMEM from the less number of pole figures. Key words： texture analysis    low symmetry crystal    overlapping diffraction    maximum entropy principle      基金资助:国家自然科学基金 服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 王沿东 徐家桢 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1995/V31/I24/550 1LazikS,EslingC．TexturesMicrostruc,1993;22:12HartingCH,FangXF,MeckingH,DahmsM．ActaMetallMater,1992;40:18833BermingG,TobischJ,RichterK,HelmingK,MaterSciForum,1993;133-136:1634VadonA,HeizmannJJ．MaterSerForum,1994;157-162:4565JaynesET．PhysRev,1957;106:6206WangF,XuJZ,LiangZD．Proc8thIntConfonTextureofMaterials,1987:1107LiangZD,XuJZa,WangF．TexturesMicrostruc,1989;10:2178WangYD,VadonA,HeizmannJJ,ComparisonsAmongtheSolutionsofFiberTextureVector,tobepublished9WangYD,XuJZ．ScrMetallMater,1995;33(inpress)10BungeHJ．TextureAnalysisinMaterialsScience,Butterworths,1982:8811左良,徐家桢,梁志德,中国科学(A辑),1990:11:121712梁志德,徐家帧,王福．织构材料的三维取向分析术-ODF分析．沈阳:东北工学院出版社,1986 [1] 王沿东; 佟伟平; 何长树; 左良; 梁志德 . 含磷深冲钢板的低分辨织构分析与弹性模量预估[J]. 金属学报, 1999, 35(6): 627-630 . [2] 梁志德. 现代织构分析的进展[J]. 金属学报, 1997, 33(2): 133-142. Viewed Full text Abstract Cited   Shared      Discussed