位错链长分布参数与可动位错密度分量及滑移面积的关系  

Distribution Parameters of Dislocation Link Length Related with Various Slip Area and the Fraction of Mobile Dislocation Density

作　　者：王勃生[1] 孙福玉[1] 孟庆恩[1] 高振英[1] 

机构地区：[1]北京冶金部钢铁研究总院

出　　处：《钢铁研究学报》1995年第6期48-52,共5页Journal of Iron and Steel Research

基　　金：国家自然科学基金资助项目

摘　　要：在作者推导的晶体位错链长统计分布理论公式的基础上，获得单位体积内总位错密度ρ中可动位错密度ρ＿ｍ的分量ｆ＿ｍ表达式ｆ＿ｍ＝ρ＿ｍ／ρ＝（１＋ｗ）ｅｘｐ（－ｗ）。进一步讨论了当ｌ＿ｃ和ｌλ变化时所造成的晶体单位体积滑移面积增量ｄｓ为：ｄｓ＝ρｂ（１－ｗ）ｅｘｐ（－ｗ）ｄｗ。最后对该式进行了初步探讨。Based on the dislocation link length distribution function derived by the author earlier,an expression for free dislocation density fraction f_m has been ob-tained as follows f_m=ρ_m/ρ=(1+w)exp(-w).The increase of slip area caused by variations of l_c,lλ in a unit volume of crystal is as ds=ρb(1-w)exp(-w)dw. This has been discussed simply in this paper at last.

关 键 词：位错链 位错密度 变形 滑移面积 金属 

分 类 号：TG111[金属学及工艺—物理冶金]