ASTRA “TUT Institutional Development Program for 2016-2022” GRADUATE SCHOOL OF
FUNCTIONAL MATERIALS AND TECHNOLOGIES (GSFMT)
Series of lectures on metal 3D printing
by
Professor Moataz Attallah,
School of Metallurgy and Materials, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
Join Zoom Meeting
https://bham-ac-uk.zoom.us/j/81385808827?pwd=UDZMUDdTSDJOYUZlYUJBZU4vMjFrUT09
Meeting ID: 813 8580 8827
Passcode: 786641
3. February 2021
11:30-13.00 (2. academic hours)- Introduction into Metal Additive Manufacturing;
This lecture covers the need for additive manufacturing following its development from polymer rapid prototyping methods in metal additive manufacturing. The lecture will give an overview of the key metal additive manufacturing techniques (direct energy deposition, powder bed, and beamless technologies) giving an overview of their applications advantages and limitations.
- Introduction to 3D Printing: process development, types (powder bed, direct energy deposition, laminated manufacturing, etc…), application to rapid prototyping for polymers, the underlying materials science (e.g. polymer types, polymers response with temperature).
- Introduction to Metal-based 3D Printing: techniques, applications, and capabilities, etc…
- Feed-stock material for metals and polymers: filaments, resins, powder, and wire.
13:30-15:00 (2 academic hours)- The 10-Rules of metal additive manufacturing:
The aim of this lecture is to establish 10 basic rules for metal 3D printing, which address a number of critical aspects for metal 3D printing, which are: the processability of a material, the impact of platform, post-processing, approaches for process optimisation, inspection techniques, and the feedstock. The course also discusses the potential defects that occur due to metal 3D printing, suggesting approaches for mitigating them through process optimisation and post-processing.
Learning Outcomes: By the end of this course, the attendee will be able to:
- Identify whether a material is processable by AM or not.
- Highlight the metallurgical issues with metal AM.
- Understand the approaches for process optimisation for AM.
- Assess the impact of AM on performance (mechanical properties).
- Recognise the defects associated with AM, and how to mitigate them.
- Highlight the benefits of AM for non-conventional applications.
15:45-16:30 (1 academic hours)- Case Studies.
This lecture covers some Case Studies & Applications for metal additive manufacturing in the following sectors: biomedical implant, automotive, oil & gas, aerospace.
4. February 2021
11:30-13.00 (2. academic hours)- To Post Process Or Not to Post-Process
An overall perspective on the the utility of post-processing techniques for additive manufacturing namely hot isostatic pressing (HIPping) machining and heat treatments will be explored focusing on its application toNi-superalloys Ti-alloys Al-alloys and functional alloys (TiNi shape memory alloys and soft magnetic alloys). It is obvious that HIPping (usually combined with a further heat treatment in Ni-superalloys and Al-alloys) results in an improvement in the mechanical properties especially tensile and fatigue properties by collapsing the residual pores and lack of fusion defects.However the impact of post-processing in general on the microstructural mechanical and functional properties needs to be understood to determine its utility. The talk also highlights cases for other materials where post-processing was unable to rectify the process-induced defects.
13:30-15:00 (2 academic hours)- Post-Processing Methods: Thermal Post-Processing
This lecture explains the changes associated with thermal treatment of material, including recovery, recrystallisation, and annealing.
15:45-16:30 (1 academic hours)-Post-Processing Methods: Surface Finishing
The lecture covers some of the key surface finishing methods that are employed for metal additive manufacturing.
Further information: Ilona Oja Acik, ilona.oja@ttu.ee, 6203369
