Formation and structure of vortex zones arising upon explosion welding of carbon steels

被引：0
|
作者：
I. A. Bataev
A. A. Bataev
V. I. Mali
V. G. Burov
E. A. Prikhod’ko
机构：
[1] Novosibirsk State Technical University,Lavrent’ev Institute of Hydrodynamics, Siberian Branch
[2] Russian Academy of Sciences,undefined
来源：
The Physics of Metals and Metallography | 2012年 / 113卷
关键词：
low-carbon steel; explosion welding; structure of vortices;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Presented are the results of investigation of vortex zones arising upon explosion welding of thin plates of steel 20. Specific features of the structure of the vortices and zones of the deformed material adjacent to them have been revealed by methods of structure analysis. It has been shown that in the process of explosive loading the central regions of the vortices characterized by an enhanced carbon content were in the molten state. The microhardness in the region of vortex zones reaches 5700 MPa. The character of the arrangement of ferrite grains and martensite microvolumes in peripheral regions of vortices is caused by intense rotation of the material. The intense intermixing of materials in different states of aggregation in vortex zones is one of the factors responsible for the formation of cavities, whose volume exceeds the volume shrinkage occurring upon casting of carbon steels. It has been established that traces of vortex zones are retained even after one-hour annealing of welded packets at 800°C.
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页码：233 / 240
页数：7
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