dc.contributor.author |
Molobi, E
|
|
dc.contributor.author |
Sacks, N
|
|
dc.contributor.author |
Theron, Maritha
|
|
dc.date.accessioned |
2022-06-27T06:28:15Z |
|
dc.date.available |
2022-06-27T06:28:15Z |
|
dc.date.issued |
2021-10 |
|
dc.identifier.citation |
Molobi, E., Sacks, N. & Theron, M. 2021. Influence of z-increment on the build height, porosity and microstructure of laser deposited WC-10wt%FeCr thin walls. http://hdl.handle.net/10204/12445 . |
en_ZA |
dc.identifier.uri |
http://hdl.handle.net/10204/12445
|
|
dc.description.abstract |
The influence of z-increment on profile, porosity and microstructure of WC-10wt%FeCr single walls deposited using direct energy deposition was studied. Traverse speeds of 3.2 and 6.4 mm/s were used, while laser power was varied at 200, 300 and 400 W and powder feed rate varied between 7.3, 10 and 12.2 g/min. A z-increment equal to the layer thickness, where the laser is in its focused state leading to increased laser-powder interaction, resulted in an increase in sample porosity and height. The microstructure had a banded structure consisting of two alternating layers characterized by their different WC grain morphologies arising from the in-situ heat treatment during layer deposition. It was observed that the z-increment was critical in preventing a defocused laser. An incorrect z-increment leads to less powder being captured in the molten pool, the dynamics of which influence the type of pores created and the resultant alloy microstructure. |
en_US |
dc.format |
Abstract |
en_US |
dc.language.iso |
en |
en_US |
dc.relation.uri |
https://www.home-of-welding.com/storage/media/documents/7259/euro-pm2021-technical-programme.pdf |
en_US |
dc.relation.uri |
https://www.epma.com/publications/euro-pm-proceedings/category/euro-pm2021-congress-proceedings |
en_US |
dc.source |
Euro PM2021 Congress, Online, 18-22 October 2021 |
en_US |
dc.subject |
Z-increment influence |
en_US |
dc.subject |
Laser deposited |
en_US |
dc.subject |
Porosity |
en_US |
dc.title |
Influence of z-increment on the build height, porosity and microstructure of laser deposited WC-10wt%FeCr thin walls |
en_US |
dc.type |
Conference Presentation |
en_US |
dc.description.pages |
6 |
en_US |
dc.description.note |
© European Powder Metallurgy Association (EPMA). Due to copyright restrictions, the attached PDF file contains the abstract of the published item. For access to the published full-text item, please consult the publisher's website. The item is published by the European Powder Metallurgy Association (EPMA) |
en_US |
dc.description.cluster |
Manufacturing |
en_US |
dc.description.impactarea |
Laser Enabled Manufacturing |
en_US |
dc.identifier.apacitation |
Molobi, E., Sacks, N., & Theron, M. (2021). Influence of z-increment on the build height, porosity and microstructure of laser deposited WC-10wt%FeCr thin walls. http://hdl.handle.net/10204/12445 |
en_ZA |
dc.identifier.chicagocitation |
Molobi, E, N Sacks, and Maritha Theron. "Influence of z-increment on the build height, porosity and microstructure of laser deposited WC-10wt%FeCr thin walls." <i>Euro PM2021 Congress, Online, 18-22 October 2021</i> (2021): http://hdl.handle.net/10204/12445 |
en_ZA |
dc.identifier.vancouvercitation |
Molobi E, Sacks N, Theron M, Influence of z-increment on the build height, porosity and microstructure of laser deposited WC-10wt%FeCr thin walls; 2021. http://hdl.handle.net/10204/12445 . |
en_ZA |
dc.identifier.ris |
TY - Conference Presentation
AU - Molobi, E
AU - Sacks, N
AU - Theron, Maritha
AB - The influence of z-increment on profile, porosity and microstructure of WC-10wt%FeCr single walls deposited using direct energy deposition was studied. Traverse speeds of 3.2 and 6.4 mm/s were used, while laser power was varied at 200, 300 and 400 W and powder feed rate varied between 7.3, 10 and 12.2 g/min. A z-increment equal to the layer thickness, where the laser is in its focused state leading to increased laser-powder interaction, resulted in an increase in sample porosity and height. The microstructure had a banded structure consisting of two alternating layers characterized by their different WC grain morphologies arising from the in-situ heat treatment during layer deposition. It was observed that the z-increment was critical in preventing a defocused laser. An incorrect z-increment leads to less powder being captured in the molten pool, the dynamics of which influence the type of pores created and the resultant alloy microstructure.
DA - 2021-10
DB - ResearchSpace
DP - CSIR
J1 - Euro PM2021 Congress, Online, 18-22 October 2021
KW - Z-increment influence
KW - Laser deposited
KW - Porosity
LK - https://researchspace.csir.co.za
PY - 2021
T1 - Influence of z-increment on the build height, porosity and microstructure of laser deposited WC-10wt%FeCr thin walls
TI - Influence of z-increment on the build height, porosity and microstructure of laser deposited WC-10wt%FeCr thin walls
UR - http://hdl.handle.net/10204/12445
ER -
|
en_ZA |
dc.identifier.worklist |
25676 |
en_US |