scholarly journals Structural State Scale-Dependent Physical Characteristics and Endurance of Cermet Composite for Cutting Metal

2014 ◽  
Vol 682 ◽  
pp. 405-409
Author(s):  
V.E. Ovcharenko ◽  
A.A. Mohovikov ◽  
Bao Hai Yu ◽  
Yan Hui Zhao
Keyword(s):  
Electron Beam ◽  
Structural State ◽  
Metal Cutting ◽  
Structural Phase ◽  
Cutting Tools ◽  
High Energy ◽  
Pulse Electron Beam ◽  
Al Alloy ◽  
Heating And Cooling ◽  
Subsurface Layers

A structural-phase state developed on the surface of TiC/Ni-Cr-Al alloy cermet under condition of superfast heating and cooling produced by pulse electron beam melting has been presented. The effect of the surface structural state multimodality on the temperature dependencies of friction and endurance of the cermet tool in cutting metal has been investigated. High-energy flux treatment of subsurface layers by electron beam pulses in argon-containing gas discharge plasma serves to improve the endurance of metal cutting tools multiply ( by a factor of 6), to reduce friction on the account of precipitation of secondary 200 nm carbides in binder interlayers. It is possible to improve the cermet tool endurance for cutting metal by a factor of 10-12 by irradiating the cermet in a reactive nitrogen-containing atmosphere with ensuing precipitation of nanosize 50 nm AlN particles in the binder interlayers.

Improving Durability of Cermets for Metal Cutting by Generation of Subsurface Multilevel Structures

2013 ◽  
Vol 379 ◽  
pp. 131-138 ◽  
Author(s):  
V.E. Ovcharenko ◽  
A.A. Mokhovikov ◽  
A.S. Ignatiev
Keyword(s):  
Experimental Data ◽  
Electron Beam ◽  
Structural State ◽  
Electron Beam Melting ◽  
Metal Cutting ◽  
Structural Phase ◽  
Pulse Electron Beam ◽  
Al Alloy ◽  
Pulse Electron ◽  
Heating And Cooling

Experimental data on studying structural-phase states developed in the subsurface of TiC/Ni-Cr-Al alloy cermet under condition of superfast heating and cooling produced by pulse electron beam melting have been presented in this paper. The effect of the surface structural state multimodality on the temperature dependencies of friction and endurance of the cermet tool in cutting metal has been investigated. The effect of structural states on the cermet’s properties consists in improving its endurance for cutting metal by a factor of 20.

Effects of high-energy-pulse-electron beam radiation on biomacromolecules

2008 ◽  
Vol 51 (1) ◽  
pp. 86-91 ◽  
Author(s):  
Hong Zhu ◽  
JingZao Xu ◽  
ShiQiang Li ◽  
XiaoYu Sun ◽  
SiDe Yao ◽  
...  
Keyword(s):  
Electron Beam ◽  
High Energy ◽  
Pulse Electron Beam ◽  
Pulse Electron ◽  
Beam Radiation ◽  
Electron Beam Radiation ◽  
Energy Pulse

Mutation breeding for productive yeast strains through a novel method: High-energy-pulse-electron-beam

2008 ◽  
Vol 58 (3) ◽  
pp. 549-553 ◽  
Author(s):  
Hong Zhu ◽  
Jingzao Xu ◽  
Jun Shi ◽  
Rui Zhang ◽  
Xiaoyu Sun ◽  
...  
Keyword(s):  
Electron Beam ◽  
High Energy ◽  
Mutation Breeding ◽  
Pulse Electron Beam ◽  
Pulse Electron ◽  
Yeast Strains ◽  
Energy Pulse ◽  
Novel Method

Formation of Nano-Sized Structural-Phase States in Surface Layers of a Cermet Alloy and the Influence of the States on the Tool Life of Cermet Plates in Metal Cutting

2015 ◽  
Vol 770 ◽  
pp. 144-150
Author(s):  
V.E. Ovcharenko ◽  
Yuriy F. Ivanov ◽  
A.A. Mohovikov ◽  
A.S. Ignatyev ◽  
Yu Baohai ◽  
...  
Keyword(s):  
Surface Layer ◽  
Tool Life ◽  
Metal Cutting ◽  
Structural Phase ◽  
High Energy ◽  
High Energy Electron ◽  
Surface Layers ◽  
Discharge Plasmas ◽  
Profound Influence ◽  
Cermet Alloy

A comparative analysis of the surface-layer microstructure of a tungsten-based cermet alloy modified with pulsed high-energy electron beams generated by gas-discharge plasmas and of the tool life of metal-cutting plates prepared from this alloy is performed. The choice of a plasma-forming gas providing for the emission of electrons out of the plasma-filled cathode is shown to have a profound influence both on the formation process of nanosized structural-phase states in the surface layer of the cermet alloy and on the tool life of the metal-cutting plates prepared from this alloy.

High-energy pulse-electron-beam-induced molecular and cellular damage in Saccharomyces cerevisiae

2013 ◽  
Vol 164 (2) ◽  
pp. 100-109 ◽  
Author(s):  
Min Zhang ◽  
Rongrong Zhu ◽  
Mingfeng Zhang ◽  
Bo Gao ◽  
Dongmei Sun ◽  
...  
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Electron Beam ◽  
High Energy ◽  
Pulse Electron Beam ◽  
Cellular Damage ◽  
Pulse Electron ◽  
Energy Pulse

High‐energy, long‐pulse, electron‐beam driven KrF laser in laser–matter interaction

1994 ◽  
Vol 6 (3) ◽  
pp. 144-148
Author(s):  
J‐E. Montagne ◽  
Th. Sarnet ◽  
G. Inglesakis ◽  
M. Autric
Keyword(s):  
Electron Beam ◽  
High Energy ◽  
Pulse Electron Beam ◽  
Pulse Electron ◽  
Matter Interaction ◽  
Krf Laser ◽  
Long Pulse

Structural Phase Transformations of the Surface Layer of SiC Ceramics Irradiated by Intense Electron Beam

2016 ◽  
Vol 712 ◽  
pp. 81-86
Author(s):  
Yurii F. Ivanov ◽  
Oleg L. Khasanov ◽  
Maria S. Petyukevich ◽  
Valentina V. Polisadova ◽  
Tomara V. Milovanova ◽  
...  
Keyword(s):  
Surface Layer ◽  
Electron Beam ◽  
Phase Transformations ◽  
Structural Phase ◽  
Pulse Electron Beam ◽  
Experimental Investigations ◽  
Structural And Phase Transformations ◽  
Sic Ceramics ◽  
Intense Electron Beam ◽  
Intense Electron

Experimental investigations have been carried out to determine structural and phase transformations of a surface layer in SiC ceramics samples irradiated by an intense pulse electron beam of submillisecond duration. It was shown that electron beam modification of the surface layer of the SiC ceramics was followed by improvement of mechanical characteristics of the material. The suggestions have been made to explain this effect.

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