文献类型：期刊文献

中文题名：高温蠕变中的金相分维变化

英文题名：CONVERSION OF METALLGRAPHIC FRACTAL DEMENSION IN HIGH TEMPERTURE CREEP

作者：唐文兵[1];王印培[1]

机构：[1]华东理工大学机械学院,上海200237

年份：2003

卷号：39

期号：12

起止页码：614

中文期刊名：理化检验（物理分册）

外文期刊名：Physical Testing and Chemical Analysis(Part A:Physical Testing)

语种：中文

中文关键词：高温蠕变;分形维数;金相分析;金属断裂;数据处理;图象处理

外文关键词：Fractal dimension; High temperature creep; Metallograph

摘要：对经高温持久强度试验的试样,沿其轴线拍摄一系列金相照片,用周积法测算出各自的维数,得出维数沿轴向的分布规律。从中发现,蠕变程度越严重的区域,其分形维数越小,在断裂的地方达到最小。在工程上,可以利用其分维最小值与平台区的分维来判断炉管的安全性。
A series of metallographs have been taken on a speciman after experiment of high temperature sustaining strength, then their fractal dimensions are calculated by perimeter-area method, and the distributed regular pattern are obtained. It follows from this that the fractal dimension is less while the creep is more serious, the value attains minimum in crack. The safety of furnace pipe can be judged by whether the fractal dimension value is the minumum or the maximum.