Additive Manufacturing for Fabrication of 316L- Grade Components
Coordinating university or institute
Facility
ITERProject description
The main objective is to demonstrate how a subdivision of a final structure could be produced in stainless steel 316L(N)-IG-grade with electron beam melting (EBM) followed by post-EBM hot isostatic pressing (HIP). As alternative way, selective melting (LS/SLM) has also been explored. The characteristics of raw materials and processing have been explored in detail and the quality control of the powder material, process and optimized parameters to achieve a fully dense material have been clarified. A large number of block specimens have been fabricated and delivered for testing. The approach to manufacture a large section by sub-division and subsequent joining using hot isostatic pressing (HIP) has been explored. The surface preparation and optimization of post-EBM joining of parts by HIP has been addressed and parameters to achieve successful joints with good metallurgical bonding have been developed.
Year
Team
Chalmers University of Technology:
- Lars Nyborg, Professor, specialist in materials design, powder technology and additive manufacturing, surface technology
- Eduard Hryha, Professor, specialist in materials design, powder technology and additive manufacturing, divison of materials and manufacturing, industrial and materials science
Mid-Sweden University:
- Lars-Erik Rännar, Docent, specialist in EBM technology, additive manufacturing, Quality management and mechanical engineering
Stockholm University:
- Zhijian James Shen, Professsor, specialist in SLM technology, department of materials and environmental chemistry
Swerim:
- Hans Magnusson, Specialist in HIP and powder technology, materials modelling
Core deliverables
- Certification and assessment of high quality metal powder for intended application
- Development and delivery of test specimens for mechanical testing and radiation testing
- Development of design for AM-fabrication of intended product for ITER
- Process development and process optimization for material by AM
- HIP process and surface preparation for optimized HIP-joining of AM-fabricated specimens developed
- Scientific publications
- Patent application
Industry involvement
- Carpenter Powder Products
- Sandvik Materials Technology
Total budget
Collaborations
- Chalmers University of Technology
- Mid Sweden University
- Stockholm University
- Swerim