171130 Progress Update WP1 (Laura Cordova Gonzalez)
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This document discusses the mechanical properties of aluminum alloys and scalmalloy produced by additive manufacturing. It analyzes the ultimate tensile strength (UTS), elongation, and hardness values of different alloys printed in different orientations. Micro-tensile tests were conducted and fracture surfaces were examined. The alloys printed in the XY orientation generally had higher elongation but lower UTS compared to the Z orientation. Both alloys exhibited anisotropic properties depending on the printing orientation. The document also analyzes porosity in the different materials and how it relates to mechanical properties.
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171130 Progress Update WP1 (Laura Cordova Gonzalez)
- 1. MECHANICAL PROPERTIES OF AL ALLOYS Laura Cordova
- 2. 05/12/2017l.cordovagonzalez@utwente.nl 2 MICRO SAMPLES PREPARATION 1KN load
- 3. 05/12/2017l.cordovagonzalez@utwente.nl 3 INTRODUCTION OF THE METHOD
- 4. Monitoring the crack propagation Mechanical properties Fracture surface & mechanics 05/12/2017l.cordovagonzalez@utwente.nl 4 WHAT KIND OF INFORMATION MICRO-TENSILE TEST
- 5. IN-SITU TENSILE TESTING ALSI10MG XY 05/12/2017l.cordovagonzalez@utwente.nl 5
- 6. 05/12/2017l.cordovagonzalez@utwente.nl 6 MECHANICAL PROPERTIES Properties UTS (MPa) ε (%) HV AlSi10Mg casted and aged1 300-317 2,5-3,5 86 AlSi10Mg (AM Literature)2 335 3 115 AlSi10 XY 202 14,6 72 AlSi10Mg Z 224 11,8 76 Scalmalloy (AM Literature)2 490 8 177 Scalmalloy XY 462 16,2 146 Scalmalloy Z 440 13,4 139 (2) Material data sheet – APWORKS ~30% UTS ~x4 ε (1) http://www.matweb.com
- 7. 05/12/2017l.cordovagonzalez@utwente.nl 7 MECHANICAL PROPERTIES SUMMARIZE UTS (MPa) ε (%) Scalmalloy XY 450±25 15.2±2.2 Scalmalloy Z 429±29 12.5±2.4 AlSi10Mg XY 199±12 13.2±2.7 AlSi10Mg Z 220±19 11.3±1.9 0 2 4 6 8 10 12 14 16 18 20 0 100 200 300 400 500 Scalmalloy XY Scalmalloy Z AlSi10Mg XY AlSi10Mg Z σ(MPa) ε (%)
- 8. 05/12/2017l.cordovagonzalez@utwente.nl 8 MECHANICAL PROPERTIES SUMMARIZE Scalmalloy XY Scalmalloy Z AlSi10Mg XY AlSi10Mg Z 150 200 250 300 350 400 450 500 UTS Def. UTSMPa 9 10 11 12 13 14 15 16 17 18 19 Def.% Scalmalloy XY Scalmalloy Z AlSi10Mg XY AlSi10Mg Z 150 200 250 300 350 400 450 500 UTS Def. UTSMPa 9 10 11 12 13 14 15 16 17 18 19 Def.% UTS (MPa) ε (%) Scalmalloy XY 450±25 15.2±2.2 Scalmalloy Z 429±29 12.5±2.4 AlSi10Mg XY 199±12 13.2±2.7 AlSi10Mg Z 220±19 11.3±1.9
- 9. FRACTOGRAPHY
- 10. 05/12/2017l.cordovagonzalez@utwente.nl 10 FRACTOGRAPHY ORIENTATION Fracture surface Orientation (A) Crack Orientation (B)
- 12. 05/12/2017l.cordovagonzalez@utwente.nl 12 ALSI10MG FRACTURE SURFACE (A) AL-XY porosity dimples
- 13. 05/12/2017l.cordovagonzalez@utwente.nl 13 ALSI10MG CRACK (B) AL-XY Sliding effect dimples Zoom in the crack
- 15. 05/12/2017l.cordovagonzalez@utwente.nl 15 ALSI10MG FACTURE SURFACE (A) AL-Z porosity dimples Dimples seem more rounded than XY direction
- 18. 05/12/2017l.cordovagonzalez@utwente.nl 18 SCALMALLOY FRACTURE SURFACE (A) S-XY Irregular porosity imperfections dimples
- 21. 05/12/2017l.cordovagonzalez@utwente.nl 21 SCALMALLOY FRACTURE SURFACE S-Z Irregular porosity imperfections Crack initiation
- 23. POROSITY
- 27. 05/12/2017l.cordovagonzalez@utwente.nl 27 ALSI10MG CRACK & POROSITY AL-XY
- 31. 05/12/2017l.cordovagonzalez@utwente.nl 31 ALSI10MG CRACK & POROSITY AlSi10Mg Z AL-Z
- 35. 05/12/2017l.cordovagonzalez@utwente.nl 35 SCALMALLOY CRACK & POROSITY S-XY
- 39. 05/12/2017l.cordovagonzalez@utwente.nl 39 SCALMALLOY CRACK & POROSITY S-Z
- 40. Advantages Elongation Flexibility Customization New materials (Sc) 05/12/2017l.cordovagonzalez@utwente.nl 40 WRAP UP ADDITIVE MANUFACTURING (SLM) FOR CONVENTIONAL MANUFACTURING Disadvantages UTS Anisotropy Porosity The micro-testing method also adds advantages for AM: less material used, controlled environment, in-situ testing, fractography.