Surface Morphology Evolution of High Speed Steel Induced by High Current Pulsed Electron Beam Irradiation

2012 ◽  
Vol 557-559 ◽  
pp. 1954-1959 ◽  
Author(s):  
Hui Zhao ◽  
Xiao Hui Wang
Keyword(s):  
Electron Beam ◽  
Surface Morphology ◽  
High Speed ◽  
Influencing Factor ◽  
High Speed Steel ◽  
Morphology Evolution ◽  
Pulsed Electron Beam ◽  
Micro Cracks ◽  
Current Voltage ◽  
Surface Morphology Evolution

Electron beam source was applied to investigate the effect of current, voltage and the number of pulse on surface morphology evolution of high speed steel. It has been revealed that the same trend of the morphology can be acquired by varying different parameters because energy is the main influencing factor. Material own defects and electron back-scattering are the primary reason for the formation of the craters as a result of the eruption of phase boundary. Through the following self- and re-melting repairing, the craters become shallow and the holes disappear. And the planar stress wave justified by the multi-loop craters is the root of the appearance of micro-cracks and cavities.

scholarly journals Simulation on surface morphology evolution of metal targets irradiated by intense pulsed electron beam

2015 ◽  
Vol 64 (21) ◽  
pp. 216102
Author(s):  
Yu Xiao ◽  
Shen Jie ◽  
Zhong Hao-Wen ◽  
Zhang Jie ◽  
Zhang Gao-Long ◽  
...  
Keyword(s):  
Electron Beam ◽  
Surface Morphology ◽  
Morphology Evolution ◽  
Pulsed Electron Beam ◽  
Surface Morphology Evolution

Phase structure and surface morphology evolution of Al–Ti–O films irradiated by electron beam

2014 ◽  
Vol 455 (1-3) ◽  
pp. 189-193
Author(s):  
J.J. Yang ◽  
F.M. Miao ◽  
H.L. Zhu ◽  
X.Y. Shu ◽  
B. Huang ◽  
...  
Keyword(s):  
Electron Beam ◽  
Surface Morphology ◽  
Phase Structure ◽  
Morphology Evolution ◽  
Surface Morphology Evolution

Research on Vibration Tapping of Hardened Steel

2006 ◽  
Vol 315-316 ◽  
pp. 51-55
Author(s):  
R.D. Han ◽  
B.L. Yin
Keyword(s):  
High Speed ◽  
Torsional Rigidity ◽  
Influencing Factor ◽  
High Speed Steel ◽  
Hardened Steel ◽  
Small Hole ◽  
Theoretic Analysis ◽  
Practical Solution ◽  
Micro Cracks ◽  
The Impact

As high-speed steel tap is incapable of small-hole tapping (M3) in hardened steel, vibration tapping is introduced in this paper to solve this problem. Theoretic analysis with fracture mechanics indicates that the impact effect of the tap on the workpiece results in extended micro cracks and a much lower tapping torque. And the torsional rigidity of the tap is enforced in vibration tapping as proved by dynamic analysis. The experimental results show that with well chosen amplitudes, tapping torque decreases as vibration frequency increases and increases with the increase of net cutting time ratio, with the latter being the more significant influencing factor. In vibration tapping of hardened steel, 24 threads can be machined with a single tap. Vibration tapping is then proved to be a practical solution to the problem of small-hole tapping in hardened steel.

Stress and surface morphology evolution

2010 ◽  
pp. 166-192
Author(s):  
Y. Q. Fu ◽  
W. M. Huang ◽  
M. Cai ◽  
S. Zhang
Keyword(s):  
Surface Morphology ◽  
Morphology Evolution ◽  
Surface Morphology Evolution

Application of High Speed Framing Camera in Debugging of High Current and Pulsed Electron Beam

2014 ◽  
Vol 51 (2) ◽  
pp. 022201
Author(s):  
江孝国 Jiang Xiaoguo ◽  
王远 Wang Yuan ◽  
代志勇 Dai Zhiyong ◽  
杨志勇 Yang Zhiyong ◽  
李洪 Li Hong ◽  
...  
Keyword(s):  
Electron Beam ◽  
High Speed ◽  
High Current ◽  
Pulsed Electron Beam ◽  
Framing Camera

Surface Morphology Evolution during LP-MOCVD Growth of ZnO on Sapphire

2005 ◽  
pp. 1693-1696
Author(s):  
Jian Dong Ye ◽  
Shu Lin Gu ◽  
Su Min Zhu ◽  
S.M. Liu ◽  
Feng Qin ◽  
...  
Keyword(s):  
Surface Morphology ◽  
Morphology Evolution ◽  
Mocvd Growth ◽  
Surface Morphology Evolution

Interface engineered surface morphology evolution of Au@Pd core–shell nanorods

Nanoscale ◽  
2018 ◽  
Vol 10 (45) ◽  
pp. 21161-21167 ◽  
Author(s):  
Yanchao Xu ◽  
Xiaoqiang Cui ◽  
Kun Qi ◽  
Shuting Wei ◽  
Qiyu Wang ◽  
...  
Keyword(s):  
Surface Morphology ◽  
Core Shell ◽  
Morphology Evolution ◽  
Solution Supersaturation ◽  
Surface Morphology Evolution

The surface morphology evolution of Au@Pd core–shell nanorods was controlled by adjusting the solution supersaturation.

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