Cyclic Deformation Behavior of Modified 9Cr-1Mo Steel at Elevated Temperatures

被引：0
|
作者：
Singh, Vakil [1 ]
Verma, Preeti [1 ]
机构：
[1] Banaras Hindu Univ, Indian Inst Technol, Dept Met Engn, Varanasi 221005, Uttar Pradesh, India
来源：
MECHANICAL AND CREEP BEHAVIOR OF ADVANCED MATERIALS | 2017年
关键词：
Modified 9Cr-1Mo steel; Dynamic strain ageing; Low cycle fatigue; Cell formation; FERRITIC-MARTENSITIC STEEL; FATIGUE BEHAVIOR; MICROSTRUCTURAL EVOLUTION; THERMOMECHANICAL FATIGUE; STRUCTURAL-MATERIALS; LEAD-BISMUTH; STRAIN; REACTOR; CREEP; IRON;
D O I：
10.1007/978-3-319-51097-2_15
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Modified 9Cr-1Mo steel exhibited dynamic strain ageing (DSA) in the temperature range from 523 to 673 K and it was established on the basis of plateau/peak in yield and tensile strength, minima in ductility and serrations in stress-strain curve. High density of dislocations and typical features like dislocation debris, kinks and bowing of dislocations was observed in the regime of DSA. This steel exhibited cyclic softening irrespective of the strain amplitude, strain rate, and temperature. The observed cyclic softening is associated with many factors like cell formation at room temperature and additionally annihilation of array of dislocations at 573 K, in addition to coarsening of carbides at 873 K.
引用
收藏
页码：195 / 206
页数：12
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