Surface modification of 5CrMnMo steel with continuous scanning electron beam process

Vacuum ◽  
2018 ◽  
Vol 149 ◽  
pp. 118-123 ◽  
Author(s):  
Deqiang Wei ◽  
Xiaobing Wang ◽  
Rong Wang ◽  
Hongyang Cui
Keyword(s):  
Surface Modification ◽  
Electron Beam ◽  
Scanning Electron Beam ◽  
Continuous Scanning ◽  
Scanning Electron

scholarly journals Numerical Simulation and Microstructure and Properties of 45 Steel by Scanning Electron Beam Bevel Polishing

2021 ◽  
Vol 2133 (1) ◽  
pp. 012032
Author(s):  
Tenghui Xia ◽  
Chunping Du ◽  
Zhiyong Liu ◽  
Jian Lu ◽  
Zhifa Zhu
Keyword(s):  
Surface Layer ◽  
Electron Beam ◽  
Lath Martensite ◽  
Mixed Phase ◽  
Scanning Electron Beam ◽  
Good Surface ◽  
The Matrix ◽  
Continuous Scanning ◽  
Inclination Angles ◽  
Scanning Electron

Abstract In order to obtain metal products with good surface quality, it is necessary to develop an efficient bevel polishing method. Therefore, this article Uses continuous scanning electron beam polishing. The surface of the material undergoes rapid melting and solidification and generates a dynamic temperature field. The polishing treatment improves the microstructure of the surface layer of the quenched and tempered 45 steel, and significantly increases the microhardness of the surface layer. The hardness after treatment can reach up to 747.6Hv, which is about 2.4 times higher than the matrix; the structure after hardening is transformed from the mixed phase of coarse acicular martensite and lath martensite to hidden acicular martensite and retained austenite a mixed phase thereof. In addition, after bevels with different inclination angles are subjected to electron beam surface polishing modification treatments with different scanning speeds, under the same parameters, as the inclination angle increases, the hardness value at the same position decreases.

Temperature Field Simulation for Aluminum Alloy Surface Modification by Scanning Electron Beam

2010 ◽  
Vol 97-101 ◽  
pp. 1404-1407
Author(s):  
Pei Xin Sun ◽  
Rong Wang ◽  
De Qiang Wei
Keyword(s):  
Surface Modification ◽  
Aluminum Alloy ◽  
Electron Beam ◽  
Element Model ◽  
Melting Zone ◽  
Scanning Electron Beam ◽  
Heating And Cooling ◽  
Axis Length ◽  
Aluminum Alloy Surface ◽  
Scanning Electron

According to the actual experimental condition and theoretical analysis, a finite element model was established to describe the surface modification process of scanning electron beam of 6A02 aluminum alloy. The phase change process and thermal radiation were considered in the simulation. The temperature simulation revealed the ultrahigh rate of the heating and cooling, rapid melting and re-solidification within seconds in the range of millimeters in depth. The calculated melting zone was an irregular semicircle, the x-axis length was about 2.9mm, and the axial depth was about 1.4mm. This research will predict the melting condition.

Automatic pattern positioning of scanning electron beam exposure

1970 ◽  
Vol 17 (6) ◽  
pp. 450-457 ◽  
Author(s):  
S. Miyauchi ◽  
K. Tanaka ◽  
J.C. Russ
Keyword(s):  
Electron Beam ◽  
Scanning Electron Beam ◽  
Scanning Electron

Investigation of scanning electron beam parameters in terms of the disk-charged approximation for the sample potential

Optik ◽  
2016 ◽  
Vol 127 (17) ◽  
pp. 6978-6981 ◽  
Author(s):  
Hassan N. Al-Obaidi ◽  
Musatfa M. Abid ◽  
Wasan J. Kadhem
Keyword(s):  
Electron Beam ◽  
Scanning Electron Beam ◽  
Beam Parameters ◽  
Scanning Electron

A dual-pulse scanning electron beam annealer

1987 ◽  
Vol 20 (7) ◽  
pp. 901-905 ◽  
Author(s):  
M J Hart ◽  
A G R Evans ◽  
N K Bartlett
Keyword(s):  
Electron Beam ◽  
Scanning Electron Beam ◽  
Scanning Electron
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