A mechanism of microcrater formation in metallic material irradiated by a low-energy high-current electron beam

被引：0
|
作者：
G. E. Ozur
D. I. Proskurovsky
V. P. Rotshtein
机构：
[1] Russian Academy of Sciences,Institute of High
[2] Tomsk State Pedagogical University,Current Electronics, Siberian Branch
来源：
Technical Physics Letters | 2016年 / 42卷
关键词：
Technical Physic Letter; 304L Steel; Radial Spreading; Surface Tension Gradient; Manganese Sulfide;
D O I：
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中图分类号：
学科分类号：
摘要：
Experiments with stainless steel (304L grade) samples exposed to microsecond pulses of high-current low-energy (10–30 keV) electron beam have been performed to determine dependences of the morphology, average diameter, and density of irradiation-induced microcraters on the beam energy density. A mechanism is proposed, according to which the crater formation is caused by radial spreading of the melt from the site of localization of a MnS inclusion under the action of the surface tension gradient caused by overheating of the inclusion. Estimations of the dimensions of microcraters are in satisfactory agreement with experimental data.
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页码：328 / 331
页数：3
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