160615 Progress Update WP1 (Laura Cordova Gonzalez)
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The document provides a progress update on Work Package 1. It discusses two Bachelor's projects conducted at NLR that studied the effects of process parameters on metal additive manufacturing. The first project analyzed how layer thickness influences the properties of Inconel 718 parts produced by SLM, finding differences in microstructure and hardness between 30μm and 50μm layers. The second project examined how metal powders absorb moisture in humid environments, determining moisture uptake and identifying chemical composition changes using XPS analysis. The results provide insights to improve AM part quality and guide further research on post-processing techniques.
160615 Progress Update WP1 (Laura Cordova Gonzalez)
- 1. PROGRESS UPDATE WORK PACKAGE 1 LAURA CORDOVA GONZALEZ
- 2. AGENDA 1. INTRODUCTION 2. RESEARCH PLANNING 3. BSc. PROJECTS AT NLR - RESULTS
- 3. AGENDA 1. INTRODUCTION 2. RESEARCH PLANNING 3. BSc. PROJECTS AT NLR - RESULTS
- 4. 4 INTRODUCTION CONNECTION BETWEEN THE WORKING PACKAGES WP1 WP3WP2 • Feasibility of part production on location • Failure behavior & life prediction • Update in development of technology • Maintainability (& repair) • Supply chain network design • Facility location & shipping • (Re)design stage impact • Scoring method • Part consolidation • Resource pooling l.cordovagonzalez@utwente.nl 13/12/2016 Bram Westerweel Nils Knofius Laura Cordova
- 5. AGENDA 1. INTRODUCTION 2. RESEARCH PLANNING 3. BSc. PROJECTS AT NLR - RESULTS
- 6. 6 RESEARCH METHODOLOGY Base powders properties and influence on material behavior Technology, process parameters and post-processing Maintainability (& repairing) l.cordovagonzalez@utwente.nl 13/12/2016
- 7. 7 RESEARCH TOPIC I: PRODUCING ON LOCATION MOISTURE INFLUENCE FOR AM METAL POWDERS Characterization of metal powder for AM • Moisture influence on mechanical performance (Layer deposition in SLM and powder flow) • Rheological properties • Chemical reaction (irreversible effect) – (XPS / LECO) Influence of drying process and moisture on quality / properties • Analysis of builds with as- received and dried powders • Porosity / CT-Scanning • Density • Hardness • Microstructure l.cordovagonzalez@utwente.nl 13/12/2016
- 8. 13/12/2016 8 RESEARCH TOPIC II & III: SELECTING THE CORRECT PATH POTENTIAL OF AM IN PRODUCING METAL PARTS II: Selection of suitable AM techniques Post processing Materials selection Maintenance RepairingPrinting new parts III: Study of post-processing techniques to optimize the life prediction and preventive maintenance Cases studies in industry of different type of parts to evaluate performance of developed approach
- 9. 13/12/2016 9 CASE STUDIES PARTNERS INVOLVEMENT • What type of parts can be selected? • Which are the important properties to fulfill the requirements? • Is there the possibility of printing on location? • What AM technique and post-processing? • Can be printed in the same materials? And design? • What is the result in terms of performance and economical benefits? • Is there a quantifiable impact in the maintenance actions?
- 10. AGENDA 1. INTRODUCTION 2. RESEARCH PLANNING 3. BSc. PROJECTS AT NLR - RESULTS
- 11. 11 BSc. PROJECTS I – STEFAN SMIT MOTIVATION I- Effect of layer thickness on Inconel 718 manufactured with SLM: Influence of process parameters (layer thickness) when producing SLM parts with optimized conditions Measurement of properties such as: porosity level, microstructure and melt pool size, hardness and density 13/12/2016 Sample preparation
- 12. 12 BSc. PROJECTS I – STEFAN SMIT Effect of layer thickness on Inconel 718 manufactured with SLM: 30μm 50μm - Melt pool size Microstructure Hardness Microstructure with Kalling’s reagent no. 2 l.cordovagonzalez@utwente.nl 13/12/2016
- 13. 13 BSc. PROJECTS I – STEFAN SMIT Effect of layer thickness on Inconel 718 manufactured with SLM: Density Porosity l.cordovagonzalez@utwente.nl 13/12/2016
- 14. 14 BSc. PROJECTS II – STEFAN SMIT CONCLUSIONS I- Effect of layer thickness on Inconel 718 manufactured with SLM: Comparable density and porosity Differences in microstructure -> hardness Next steps -> study post-processing techniques l.cordovagonzalez@utwente.nl 13/12/2016
- 15. 15 BSc. PROJECTS II – NIELS VLUTTERT MOTIVATION II- The absorption of moisture by metal powder in a humid environment: Impact of environmental conditions in the quality of metal powders for AM Measurement of moisture content in three different alloys Study of chemical composition of the most critical alloy in terms of reaction to humidity l.cordovagonzalez@utwente.nl 13/12/2016 Humidity 90% Time in chamber 8 weeks Time testing 45 min Temperature 150C
- 16. 16 BSc. PROJECTS II – NIELS VLUTTERT The absorption of moisture by metal powder in a humid environment: Moisturecontent Moisture analysis 0,186% Material Starting w % moist. % n mois. AlSi10Mg 5,7255 0,1869% 0,5099% Ti6Al4V 9,6952 0,1031% 0,1662% Inc718 15,6232 0,0499% 0,0499% Inconel Titanium Aluminum l.cordovagonzalez@utwente.nl 13/12/2016 Mass (g) Time (min)
- 17. 17 BSc. PROJECTS II – NIELS VLUTTERT The absorption of moisture by metal powder in a humid environment: Composition analysis with XPS l.cordovagonzalez@utwente.nl 13/12/2016 Oxygen
- 18. 18 BSc. PROJECTS II – NIELS VLUTTERT CONCLUSIONS II- The absorption of moisture by metal powder in a humid environment: Moisture content is difficult to measure in metal powder by thermo- gravimetrical analysis (low accuracy) Variability in particles chemical composition Next steps -> analyze builds l.cordovagonzalez@utwente.nl 13/12/2016
- 19. THANK YOU 19