ResearchSpace
→
Browsing by Subject

Browsing by Subject "Porosity"

Now showing items 1-12 of 12

Characterization of gas atomized Ti-6Al-4V powders for additive manufacturing

Author: Tshabalala, Lerato C ; Mathe, Ntombizodwa R ; Chikwanda, HIlda K Date: May 2018 In this paper, titanium powders from various sources were characterized to compare powder integrity for additive manufacturing by selective laser melting process. Selective laser melting by powder-bed based Additive Manufacturing (AM) is an ... Read more
Contiguous aggregate packing as common principle for benchmarking asphalt density, stiffness and permeability control

Author: Horak, E ; Komba, Julius J ; Maina, J ; Sebaaly, H ; Muller, J Date: Mar 2022 Contiguous aggregates are aggregate sizes that consecutively follow a typical aggregate grading curve. Porosity calculation is possible for a binary or longer ranges of contiguous aggregates. Porosity is a fundamental density indicator and ... Read more
Effect of scanning speed and powder flow rate on the evolving properties of laser metal deposited Ti-6Al-4V/Cu composites

Author: Erinosho, MF ; Akinlabi, ET ; Pityana, Sisa L Date: 2016 In laser metal deposition (LMD), good bonding between two similar or dissimilar materials can be achieved if the interrelationships between the processing parameters are well understood. LMD was conducted by varying the scanning speed and ... Read more
The effects of LENS process parameters on the behaviour of 17-4 PH stainless steel

Author: Mathoho, Ipfi ; Akinlabi, ET ; Arthur, Nana KK ; Tlotleng, Monnamme ; Makoana, Nkutwane W Date: Feb 2020 17-4 PH stainless steel has proven to be one of the workhorse materials in industries such as aerospace, chemical, and energy. The attraction of this alloy to the aforementioned industries is derived from the fact that 17-4 PH stainless steel ... Read more
Evaluation of chitosan/sisal fiber/polyethylene membranes

Author: Agboola, O ; Fayomi, OSI ; Sadiku, ER ; Ayoola, A ; Mokrani, T ; Mbuli, BS ; Popoola, P ; Perry, Goitseona S Date: Jul 2020 Composites of ternary blend of chitosan/sisal fiber/high density polyethylene, were prepared by using the Rheomixer, followed by hot press, in order to form dense microfiltration membranes. The effective operation of the membranes was tested ... Read more
Impact of DED process parameters on the metallurgical characteristicsof 17-4 PH SS deposited using DEDI

Author: Mathoho, I ; Akinlabi, ET ; Arthur, Nana KK ; Tlotleng, Monnamme Date: Aug 2020 This study investigated the influence direct energy deposition (DED) process parameters have on the metallurgical characteristics (porosity, microstructural evolution, microhardness, and corrosion behavior) of 17−4 PH stainless steel powder. ... Read more
Influence of z-increment on the build height, porosity and microstructure of laser deposited WC-10wt%FeCr thin walls

Author: Molobi, E ; Sacks, N ; Theron, Maritha Date: Oct 2021 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 ... Read more
Modification of H950 condition for 17-4 PH stainless steel processed by DED

Author: Mathoho, Ipfi ; Arthur, Nana KK ; Tlotleng, Monnamme Date: Feb 2023 The current study embarked on developing the H950 aging condition for 17-4 PH stainless steel that was manufactured through the DED process. The driving force for carrying out this study was that, when the H950 condition was applied to 17-4 ... Read more
Preliminary investigation on selective laser melting of 17-4ph steel using high laser powers of up to 1500w

Author: Makoana, Nkutwane W ; Moller, Heinrich ; Louw, Danie ; Yadroitsev, I Date: Sep 2017 High laser powers of up to 1500W were used to additively manufacture 17-4PH samples. Porosity was measured using the image analysis technique, and all samples are fairly dense with a maximum of 0.42 percent porosity. Read more
Residual stress, porosity and surface roughness for laser powder bed fusion manufactured Ti6Al4V at high laser powers

Author: Makoana, Nkutwane W ; Yadroitsava, I ; Yadroitsev, I ; Du Plessis, A ; Tshabalala, Lerato C ; Pityana, Sisa L Date: Nov 2021 The use of high-powered lasers presents a unique opportunity to improve the LPBF productivity since a larger beam spot size and higher scanning speeds can be utilized to increase the process build rate. In this study, a custom-built LPBF ... Read more
Standard method for microCT-based additive manufacturing quality control 1: Porosity analysis

Author: Du Plessis, A ; Sperling, P ; Beerlink, A ; Tshabalala, Lerato C ; Hoosain, Shaik E ; Mathe, Ntombizodwa R ; Le Roux, SG Date: Sep 2018 MicroCT is a well-established technique that is used to analyze the interior of objects non-destructively, and it is especially useful for void or porosity analysis. Besides its widespread use, few standards exist and none for additive ... Read more
Wear of semi-solid rheocast SiCp/Al metal matrix composites

Author: Curle, UA ; Ivanchev, L Date: Sep 2010 Rheocasting of plates in Al alloy 359 reinforced with SiC at 11%, 27% and 50% (volume fractions) exhibits the capability of the council for scientific and industrial research-rheocasting system (CSIR-RCS) in rheo-processing and high pressure ... Read more

Now showing items 1-12 of 12

Browse

All of ResearchSpace

Quick Links

Legislation and compliance

General Enquiries

Tel: + 27 12 841 2911
Email: callcentre@csir.co.za

Physical Address
Meiring Naudé Road
Brummeria
Pretoria
South Africa

Postal Address
PO Box 395
Pretoria 0001
South Africa

Social Connect

Resources on this site are free to download and reuse according to associated licensing provision. Please read the terms and conditions of usage of each resource.

Browsing by Subject "Porosity"

Browsing by Subject "Porosity"

Browse

All of ResearchSpace

Quick Links

Legislation and compliance

General Enquiries

Social Connect