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金属学报  1986, Vol. 22 Issue (6): 79-148    
  论文 本期目录 | 过刊浏览 |
12CrMo钢的疲劳位错结构观察
刘禹门
西安交通大学
FATIGUE DISLOCATION STRUCTURE IN ALLOY FERRITE STEEL
by LIU Yumen (Xi'an Jiaotong University)
引用本文:

刘禹门. 12CrMo钢的疲劳位错结构观察[J]. 金属学报, 1986, 22(6): 79-148.
. FATIGUE DISLOCATION STRUCTURE IN ALLOY FERRITE STEEL[J]. Acta Metall Sin, 1986, 22(6): 79-148.

全文: PDF(1773 KB)  
摘要: <正> 为深入了解12CrMo钢的循环塑性变形规律,本文在已有工作的基础上进一步研究循环加载所形成的疲劳位错结构特征。 研究用料为12CrMo钢,其主要元素含量为0.10%C,0.53%Cr和0.48%Mo。热轧圆钢锻成板状毛坯后,于930℃加热,进行退火处理,获得等轴状合金铁素体和少量珠光体的显微组织。应用Amsler型高频疲劳试验机进行循环拉伸试验。加载频率为180Hz。试样在疲劳极限(167MPa)的循环应力作用下,经10~7周的循环加载后,
Abstract:The fatigue dislocation structure in an alloy ferrite steel was studied by the method of electron diffraction contrast analysis. The dislocation structure features in annealed 12CrMo steel variate after 10~7 cycles under cyclic tensile stresses. The main features of fatigue dislocation structure are dislocation jog, dipole, Ioop, deformation band, tangle and banded dislocation structure. Alloy ferrite grains are broken into blocky-like microstructure regions.
收稿日期: 1986-06-18     
1 刘禹门,电子显微学报,3(1984) ,№2. 43.
2 刘禹门,电子显微学报,3(1984) ,№4,27.
3 刘禹门编著,金属的疲劳,陕西科学技术出版社,1986. p.153.
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