The microstructure and properties of Cr/Ni alloying layer after surface alloying treatment induced by continuous scanning electron beam process

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.

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

Vacuum ◽

10.1016/j.vacuum.2017.12.032 ◽

2018 ◽

Vol 149 ◽

pp. 118-123 ◽

Cited By ~ 22

Author(s):

Deqiang Wei ◽

Xiaobing Wang ◽

Rong Wang ◽

Hongyang Cui

Keyword(s):

Surface Modification ◽

Electron Beam ◽

Scanning Electron Beam ◽

Continuous Scanning ◽

Scanning Electron

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Surface microstructures and improved mechanical property of 40CrMn steel induced by continuous scanning electron beam process

Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms ◽

10.1016/j.nimb.2019.08.020 ◽

2019 ◽

Vol 459 ◽

pp. 130-136 ◽

Cited By ~ 1

Author(s):

Rong Wang ◽

Jie Yu ◽

Deqiang Wei ◽

Chenggong Meng

Keyword(s):

Mechanical Property ◽

Electron Beam ◽

Scanning Electron Beam ◽

Continuous Scanning ◽

Surface Microstructures ◽

Scanning Electron

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Surface modification of the carbon tool steel by continuous scanning electron beam process

Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms ◽

10.1016/j.nimb.2018.12.037 ◽

2019 ◽

Vol 440 ◽

pp. 156-162 ◽

Cited By ~ 1

Author(s):

Hongyang Cui ◽

Rong Wang ◽

Deqiang Wei ◽

Jiayue Huang ◽

Jinyan Guo ◽

...

Keyword(s):

Surface Modification ◽

Electron Beam ◽

Tool Steel ◽

Scanning Electron Beam ◽

Continuous Scanning ◽

Scanning Electron

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Effects of TiN/Ni ratio on the surface alloying of scanning electron beam

Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms ◽

10.1016/j.nimb.2020.05.016 ◽

2020 ◽

Vol 476 ◽

pp. 73-78

Author(s):

Deqiang Wei ◽

Jinyan Guo ◽

Tenghui Xia ◽

Hui Wu

Keyword(s):

Electron Beam ◽

Surface Alloying ◽

Scanning Electron Beam ◽

Scanning Electron

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The microstructure and properties of Mo alloying layer after surface alloying treatment induced by continuous scanning electron beam process

Journal of Physics Conference Series ◽

10.1088/1742-6596/2133/1/012044 ◽

2021 ◽

Vol 2133 (1) ◽

pp. 012044

Author(s):

Xulong Ren ◽

Rong Wang ◽

Jing Zhang ◽

Deqiang Wei

Keyword(s):

Mechanical Properties ◽

Electron Beam ◽

Molybdenum Carbide ◽

Electron Beams ◽

Sample Surface ◽

Surface Alloying ◽

Continuous Scanning ◽

Alloy Zone ◽

Carbide Particles ◽

Scanning Electron

Abstract Surface alloying by scanning electron beams can improve the microstructure and mechanical properties of steel. In this study. Four electron energy densities were selected during the alloying process: E1 = 1.5J/cm2, E2 = 2.9J/cm2, E3 = 4.5J/cm2 and E4 = 5.9J/cm2. The obtained results show that the sample surface is composed of alloying zone and heat-affected zone. The microstructure of the alloy zone is concealed acicular martensite and molybdenum carbide particles. The microhardness of this area is 1250HV. The sample treated with an energy density of 5.9J/cm2 has the least amount of wear. After alloying treatment, the microhardness and wear amount of the scanned samples are significantly improved.

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