摘要
在近似函数的基础上,提出并建立分离微晶与微应力、微晶与堆垛层错、微应力与堆垛层错二重宽化效应的最小二乘法和微晶-微应力-堆垛层错三重宽化效应的最小二乘法,同时编制了相关的计算机求解系列程序.这些方法适用于密堆六方(cph)、面心立方(fcc)和体心立方(bcc)结构.还给出和讨论了几个应用实例.
The least square method and corresponding computing programs for separating twofold broadening effects due to the crystallite-microstress, crystallite-stacking faults, microstress-stacking faults and three-fold effect of crystallite-stress-faults have been proposed and established. The least square method can be applied to closed packing hexagonal (cph), face-centered cubic (fcc) and body-centered cubic (bcc) structures. A few examples are presented and discussed.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2006年第3期1325-1335,共11页
Acta Physica Sinica
基金
上海纳米专项基金(批准号:05nm05025)资助的课题.~~
关键词
最小二乘法
微结构
X射线衍射
计算程序
least square method, micro-structure, XRD, computing programs