Internal Friction Study of the Influence of Deep Cryogenic Treatment on the Microstructure of a Bainitic Steel

被引：0
|
作者：
Min, Na [1 ]
Ji, Tianyu [2 ]
Zhu, Lijuan [2 ]
Wu, Xiaochun [1 ,2 ]
Wang, Hongbin [2 ]
机构：
[1] Shanghai Univ, Lab Microstruct, 99 Shangda Rd, Shanghai, Peoples R China
[2] Shanghai Univ, Sch Mat Sci & Engn, Shanghai, Peoples R China
来源：
INTERNAL FRICTION AND MECHANICAL SPECTROSCOPY | 2012年 / 184卷
关键词：
Internal friction; bainitic steel; deep cryogenic treatment; dislocation; VIRGIN MARTENSITE; CARBON-STEEL; TOOL STEEL; TEMPERATURE; RESISTANCE; BEHAVIOR;
D O I：
10.4028/www.scientific.net/SSP.184.239
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The influence of deep cryogenic treatment (DCT) on the microstructure of a bainitic steel is investigated by means of internal friction and transmission electron microscopy (TEM). Two relaxation peaks(P-c1 and P-c2) are observed during cooling and one relaxation peak (P-h) during heating from 100 to 320K. Peak P-c1 may be related to dislocation pinning. Peak P-h is attributed to dislocation-carbon atoms interaction. The decreasing of peak P-h after cycles deep cryogenic cooling indicates that soaking time under the deep cryogenic temperature is not contributed to the precipitation of carbides, while the cycles cryogenic treatment lead to more fine carbides precipitation.
引用
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页码：239 / +
页数：2
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