Fabrication and Characterization of Wire Arc Additively Manufactured AlSi5 Structures
, Maria Ormanova 1, Ralf Ossenbrink 2, Alexander Nikitin 2, Nikolay Doynov 2,3, Stefan Valkov 1,4 and Vesselin Michailov 2Round 1
Reviewer 1 Report
The authors provided a comparative analysis of their results with those of other authors. However, it is suggested to take into account a number of observations.
Abstract:
1. Welding speed: 13.3 mm/s. It is recommended to use "s" instead of sec s instead of "sec", correct "mm"
2. Explain abbreviation FWHM, when it first appears in the body text
3. It is recommended to use full word of keywords not abbreviations, explain WAAW when it first appears in the text1
Indroduction:
4. Line 39: full stop needed
5. Lines 50-75: Is the information presented in lines 50-75 quoted from 8-11 literature sources? If yes, it is recommended to specify
6. Line 89: it is recommended do not use personal statements, "were studied" instead of "we study"
Materials and Methods:
7. Line 98: could you mention all necessary control units?
8. How many specimens were produced in total? If only 1 per welding speed, don't the authors think the results are not very representative?
9. Line 103: probably you shoul use capital T for Table
10. How can the authors explain this choice of welding speed: 13.3 and 20?
11. Line 107: you can use abbrevation GMAW
12. Most likely, the equation must use a multiplication sign
13. If tenths are important in selecting the welding speed, it is suggested to add 20.0 to ensure that the accuracy is the same
14. Probably T means top, M middle, B bottom, please add in the text
Results:
15. Line 151: despite the fact that no significant differences were detected, it would be more informative to present images from different growth zones in the figure 2
16. Equation 2 and text: use Iexp, Ist
17. What is the deposition temperature?
18. Line 195: "much lower" it is better to specify
19. Line 196: "advanced stage of growth" do the authors mean subsequent layers? If yes it is recommended to use different word
20. Define increased deposition temperature
21. Lines 209-211 contraditct to before mentioned statement, that there is no significant difference in the porosity level. Could you explain why here you indicated that difference?
22. Line 219: abbreviation should be explained at the beginning of the paper
23. Table 3, technical comment: align the table according to the content (column width)
24. Line 234: specify thermal gradient
25. Line 286: "highly porous structure" contradiction again, please revise
Conclusions:
26. It is recommended to number
Author Response
Dear reviewer,
Thank you so much for your very detailed and descriptive review of our article. All of your remarks helped us to improve the quality of the article significantly. Thank you for your efforts!
Best regards,
Georgi Kotlarski
Author Response File: 
Author Response.pdf
Reviewer 2 Report
This manuscript has adequate structure as a scientific paper demands. Was observed and analyzed morphology, microstructure and mechanical properties of additively manufactured specimens. Two welding speeds were chosen for this experiment. The experiment was designed properly and results were clearly presented. Nevertheless, during review process some remarks should be stressed:
Line 15 - The unit of welding speed is incorrect in meter per second.
Figure 2 - Recommend using bright colors for pores markers and scalebars, because they are hard readable.
Figure 3 - Recommend reformulation the name of this figure, because, it is not crystallographic evolution but XRD analysis of various specimens during process.
Figure 10 - The information about speeds in legend has incorrect unit meter per minute regarding with other text.
Occurrence of pores and low loads cause various hardness of same specimen. Is recommended for average hardness adding data of deviation measurement.
Author Response
Dear reviewer,
The author team would like to thank you for your excellent remarks regarding the currently considered paper. They helped us to greatly improve the quality of the article. Thank you for your time and efforts!
Best regards,
Georgi Kotlarski
Author Response File: Author Response.pdf
