摘要
实验表明具有片层状微结构珠光体钢是一种结构敏感材料,其细观结构尺寸———层间距对其疲劳寿命影响显著.作者从对具有不同片层间距的珠光体团的有限元分析结果出发,定性分析了层间距对其力学性能及疲劳寿命的影响机制.进而说明了定量建立材料微观结构与微观结构对宏观响应的影响之间的关系的必要性,以及在材料本构行为的描述中引入微观结构和微观机理影响的重要性.
A great number of experiments show that pearlitic steel with Layer Meso-structure depend greatly on its struc- ture. Its fatigue life is marked influenced by the interlamellar spacing. Based on the finite element analysis of single pearlitic colony with different interlamellar spacings, the reason of the interlamellar spacing is investigated, which plays an important role in the mechanics behavior of single pearlitic colony. It is necessary to establish the relationship between the microstructure and the mechanics behavior of the pearlitic material, and the importance of the interlamellar spacing is introduced into the constitutive equation of Single Pearlitic Colony.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2005年第11期110-113,共4页
Journal of Chongqing University
基金
国家自然科学基金(10472135)
教育部"跨世纪优秀人才"基金项目
关键词
珠光体团
有限元分析
片层间距
微观结构
疲劳寿命
pearlitic colony
the finite element analysis
interlamellar spacing
Meso-structure
fatigue life
