Formation of ultrafine twinned austenite on a cold rolled 316L stainless steel induced by pulsed electron beam treatment under heating mode

2012 ◽  
Vol 526 ◽  
pp. 28-33 ◽  
Author(s):  
K.M. Zhang ◽  
J.X. Zou
Keyword(s):  
Stainless Steel ◽  
Electron Beam ◽  
316L Stainless Steel ◽  
Electron Beam Treatment ◽  
Pulsed Electron Beam ◽  
Cold Rolled ◽  
Heating Mode

Surface Treatment of 316L Stainless Steel by High Current Pulsed Electron Beam

2010 ◽  
Vol 654-656 ◽  
pp. 1803-1806 ◽  
Author(s):  
Sheng Zhi Hao ◽  
Yang Xu ◽  
Min Cai Li ◽  
Chuang Dong
Keyword(s):  
Stainless Steel ◽  
Electron Beam ◽  
Energy Density ◽  
Surface Treatment ◽  
316L Stainless Steel ◽  
Electron Backscatter Diffraction ◽  
Pulse Number ◽  
High Current ◽  
Pulsed Electron Beam ◽  
Working Parameters

High current pulsed electron beam has been developing as a useful tool for surface modification of materials. This paper presents our research on the surface treatment of 316L stainless steel with an equipment of working parameters as electron energy 20-30keV, pulse duration 1.5µs and energy density ~6J/cm2. The surface microstructure was characterized with metallography, X-ray diffractometry and electron backscatter diffraction (EBSD) techniques. It was found that the modified samples showed significant improvement on corrosion resistance when using increased pulse number and higher energy density. This result is discussed in relation to the coupled temperature-stress fields formed after the absorption of electron beam energy.

scholarly journals Surface Nanostructure Formations in an AISI 316L Stainless Steel Induced by Pulsed Electron Beam Treatment

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Yang Cai ◽  
Kemin Zhang ◽  
Zhimin Zhang ◽  
Jiawei Dong ◽  
Yuan Lei ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Electron Beam ◽  
316L Stainless Steel ◽  
Steel Substrate ◽  
Aisi 316L ◽  
Structural Refinement ◽  
Electron Backscattered Diffraction ◽  
Aisi 316L Stainless Steel ◽  
Pulsed Electron Beam ◽  
Average Grain Size

High current pulsed electron beam (HCPEB) is an efficient technique for surface modifications of metallic materials. In the present work, the formations of surface nanostructures in an AISI 316L stainless steel induced by direct HCPEB treatment and HCPEB alloying have been investigated. After HCPEB Ti alloying, the sample surface contained a mixture of the ferrite and austenite phases with an average grain size of about 90 nm, because the addition of Ti favors the formation of ferrite. In contrast, electron backscattered diffraction (EBSD) analyses revealed no structural refinement on the direct HCPEB treated sample. However, transmission electron microscope (TEM) observations showed that fine cells having an average size of 150 nm without misorientations, as well as nanosized carbide particles, were formed in the surface layer after the direct HCPEB treatment. The formation of nanostructures in the 316L stainless steel is therefore attributed to the rapid solidification and the generation of different phases other than the steel substrate in the melted layer.

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