dc.contributor.author |
Pityana, Sisa L
|
|
dc.contributor.author |
Rossouw, R
|
|
dc.date.accessioned |
2009-04-09T08:11:29Z |
|
dc.date.available |
2009-04-09T08:11:29Z |
|
dc.date.issued |
2008-10 |
|
dc.identifier.citation |
Pityana, SL and Rossouw, R. 2008. Laser alloyed Al-Ni-Fe coatings. 27th International Congress on Applications of Lasers and Electro-Optics (ICALEO 2008), Orlando, Florida, USA, 20-23 October 2008, pp 55-60 |
en |
dc.identifier.isbn |
9780912035123 |
|
dc.identifier.uri |
http://hdl.handle.net/10204/3303
|
|
dc.description |
27th International Congress on Applications of Lasers and Electro-Optics (ICALEO 2008), Orlando, Florida, USA, 20-23 October 2008 |
en |
dc.description.abstract |
The aim of this work was to produce crack-free thin surface layers consisting of binary (Al-Ni, Al-Fe) and ternary (Al-Ni-Fe) intermetallic phases by means of a high power laser beam. The laser surface alloying was carried out by melting Fe and Ni based powders on an aluminium substrate. The mixture of the Fe and Ni powders was varied in order to create Fe-rich and Ni-rich intermetallic phases. A Rofin 4.4 kW Nd: YAG laser was used for melting the powders and the substrate. The thin layers were analysed by menas of X-ray diffraction (XRD), optical and scanning electron microscopy (SEM). It was found that when alloying with Fe-rich mixtures, the thin surface layers contained a number of cracks in the heat affected zones (HAZ). Alloying with Ni-rich mixtures produced crack-free surface layers on the substrate. The average thickness of the layer was ~1.5mm. The XRD analyses of the alloyed layer showed a variety of intermetallic phases including Ni3Al, NiAl, FeAl, Fe3Al and Al5FeNi. The hardness of the surface layers was 3~4 times higher than that of the Al 1200 substrate |
en |
dc.language.iso |
en |
en |
dc.publisher |
ICALEO 2008 Congress Proceedings |
en |
dc.subject |
Laser beams |
en |
dc.subject |
Thin surfacing |
en |
dc.subject |
Intermetallic phases |
en |
dc.subject |
Iron |
en |
dc.subject |
Nickel |
en |
dc.subject |
X-ray diffraction |
en |
dc.subject |
XRD |
en |
dc.subject |
Electro-optics |
en |
dc.subject |
ICALEO 2008 |
en |
dc.title |
Laser alloyed Al-Ni-Fe coatings |
en |
dc.type |
Conference Presentation |
en |
dc.identifier.apacitation |
Pityana, S. L., & Rossouw, R. (2008). Laser alloyed Al-Ni-Fe coatings. ICALEO 2008 Congress Proceedings. http://hdl.handle.net/10204/3303 |
en_ZA |
dc.identifier.chicagocitation |
Pityana, Sisa L, and R Rossouw. "Laser alloyed Al-Ni-Fe coatings." (2008): http://hdl.handle.net/10204/3303 |
en_ZA |
dc.identifier.vancouvercitation |
Pityana SL, Rossouw R, Laser alloyed Al-Ni-Fe coatings; ICALEO 2008 Congress Proceedings; 2008. http://hdl.handle.net/10204/3303 . |
en_ZA |
dc.identifier.ris |
TY - Conference Presentation
AU - Pityana, Sisa L
AU - Rossouw, R
AB - The aim of this work was to produce crack-free thin surface layers consisting of binary (Al-Ni, Al-Fe) and ternary (Al-Ni-Fe) intermetallic phases by means of a high power laser beam. The laser surface alloying was carried out by melting Fe and Ni based powders on an aluminium substrate. The mixture of the Fe and Ni powders was varied in order to create Fe-rich and Ni-rich intermetallic phases. A Rofin 4.4 kW Nd: YAG laser was used for melting the powders and the substrate. The thin layers were analysed by menas of X-ray diffraction (XRD), optical and scanning electron microscopy (SEM). It was found that when alloying with Fe-rich mixtures, the thin surface layers contained a number of cracks in the heat affected zones (HAZ). Alloying with Ni-rich mixtures produced crack-free surface layers on the substrate. The average thickness of the layer was ~1.5mm. The XRD analyses of the alloyed layer showed a variety of intermetallic phases including Ni3Al, NiAl, FeAl, Fe3Al and Al5FeNi. The hardness of the surface layers was 3~4 times higher than that of the Al 1200 substrate
DA - 2008-10
DB - ResearchSpace
DP - CSIR
KW - Laser beams
KW - Thin surfacing
KW - Intermetallic phases
KW - Iron
KW - Nickel
KW - X-ray diffraction
KW - XRD
KW - Electro-optics
KW - ICALEO 2008
LK - https://researchspace.csir.co.za
PY - 2008
SM - 9780912035123
T1 - Laser alloyed Al-Ni-Fe coatings
TI - Laser alloyed Al-Ni-Fe coatings
UR - http://hdl.handle.net/10204/3303
ER -
|
en_ZA |