Metastable Fe(Pd) Alloys Formed By Pulsed Electron Beam Melting

1982 ◽  
Vol 13 ◽  
Author(s):  
D. M. Follstaedt ◽  
J. A. Knapp
Keyword(s):  
Phase Diagram ◽  
Electron Beam ◽  
Electron Beam Melting ◽  
Defect Structures ◽  
Surface Alloys ◽  
Pulsed Electron Beam ◽  
Fcc Phase ◽  
Ion Backscattering ◽  
Initial Solidification

ABSTRACTFe(Pd) surface alloys formed by either ion implanting Pd into Fe or by vapor depositing Pd on Fe have been examined after pulsed (∼70 nsec) electron beam melting. TEM and ion backscattering/channeling showed that the implanted alloys with up to 9.6 at.% Pd were bcc and epitaxial with the substrate, inspite of predictions of initial solidification to the fcc phase by the Fe-Pd phase diagram. The resolidified Pd films, however, were fcc as predicted by the diagram. The defect structures observed in these alloys are discussed.

Synthesis of Ti3Al and TiAl based surface alloys by pulsed electron-beam melting of Al(film)/Ti(substrate) system

2011 ◽  
Vol 37 (3) ◽  
pp. 226-229 ◽  
Author(s):  
V. P. Rotshtein ◽  
Yu. F. Ivanov ◽  
Yu. A. Kolubaeva ◽  
X. Mei ◽  
A. B. Markov ◽  
...  
Keyword(s):  
Electron Beam ◽  
Electron Beam Melting ◽  
Surface Alloys ◽  
Pulsed Electron Beam

Effect of conditions of pulsed electron-beam melting for Al (film)/Ti (substrate) systems on phase formation and properties of Ti-Al surface alloys

2012 ◽  
Vol 38 (9) ◽  
pp. 780-783 ◽  
Author(s):  
V. P. Rotshtein ◽  
Yu. A. Kolubaeva ◽  
X. Mei ◽  
A. B. Markov ◽  
E. P. Naiden ◽  
...  
Keyword(s):  
Electron Beam ◽  
Phase Formation ◽  
Electron Beam Melting ◽  
Surface Alloys ◽  
Pulsed Electron Beam

scholarly journals The effect of large-area pulsed electron beam melting on the corrosion and microstructure of a Ti6Al4V alloy

2014 ◽  
Vol 311 ◽  
pp. 534-540 ◽  
Author(s):  
J.C. Walker ◽  
J.W. Murray ◽  
M. Nie ◽  
R.B. Cook ◽  
A.T. Clare
Keyword(s):  
Electron Beam ◽  
Electron Beam Melting ◽  
Ti6al4v Alloy ◽  
Large Area ◽  
Pulsed Electron Beam

Structure and properties of surface alloys synthesized by pulsed electron-beam treatment of a coating-substrate system

2014 ◽  
Vol 44 (8) ◽  
pp. 573-577 ◽  
Author(s):  
Yu. F. Ivanov ◽  
O. V. Krysina ◽  
E. A. Petrikova ◽  
A. D. Teresov ◽  
A. A. Klopotov
Keyword(s):  
Electron Beam ◽  
Electron Beam Treatment ◽  
Structure And Properties ◽  
Surface Alloys ◽  
Pulsed Electron Beam

Structure and Properties of a Titanium Film – Aluminum Substrate System Alloyed by an Intense Pulsed Electron Beam

2016 ◽  
Vol 683 ◽  
pp. 9-14
Author(s):  
Olga V. Krysina ◽  
Maria E. Rygina ◽  
Elizaveta A. Petrikova ◽  
Anton D. Teresov ◽  
Yurii F. Ivanov
Keyword(s):  
Surface Layer ◽  
Electron Beam ◽  
Wear Rate ◽  
Tribological Properties ◽  
Electron Beam Melting ◽  
High Strength ◽  
Aluminum Substrate ◽  
Structure And Properties ◽  
Titanium Film ◽  
Pulsed Electron Beam

The structure and properties of a Ti film – Al substrate system alloyed by an intense pulsed electron beam are studied. It is shown that electron beam melting of this system provides the formation of a multiphase submicrocrystalline structure with high strength and tribological properties in the surface layer. Irradiation modes, which allow an increase in the microhardness of the material and a decrease in its wear rate, are defined. Physical substantiation of this phenomenon is given.

Pulsed Electron Beam Melting of Fe

1981 ◽  
Vol 4 ◽  
Author(s):  
A. Knapp ◽  
D. M. Follstaedt
Keyword(s):  
Surface Layer ◽  
Electron Beam ◽  
Liquid Phase ◽  
Electron Beam Melting ◽  
Electron Beams ◽  
Sample Surface ◽  
Pulse Treatment ◽  
Pulsed Electron Beam ◽  
Density Of Dislocations ◽  
Slip Traces

ABSTRACTPulsed (50 nsec) electron beams with deposited energies of 1.1 ­ 2.4 J/cm2 have been used to rapidly melt a surface layer of Fe. Calculations show that this range of energies produces melt depths from 0.4–1.2 μm and melt times of 100–500 nsec. Optical microscopy and SEM of pulse treated polycrystalline foils show slip traces, as well as a general smoothing of surface features which shows that melting has occurred. TEM shows that the resolidified material is bcc, and that the material within a grain is epitaxial with the substrate. TEM also shows slip traces of {110} planes, as well as a high density of dislocations, both extended and loop. At the highest energy, subgrain boundaries are observed. Some samples were implanted with 1×1016 Sn/cm2 at 150 keV. After pulse treatment, the Sn depth profile was observed to have broadened, consistent with liquid phase diffusion. The Sn had the unexpected effect of suppressing slip at the sample surface.

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