Tensile Property of Irradiated LT21 Aluminum Alloy Sampled from Decommissioned Irradiation Channel of Heavy Water Research Reactor
Round 1
Reviewer 1 Report
The chemical content and strenght data of LT21 would be better in table form. Actual chemistry data use is suggested. The label of Fig.1. should be extended, no explanation of a, b, c, figures. The enenrgy range of fast and thermal fluence should be given. Figure 5 is difficult to understand the trend. At least very different symbols should be used, and it is recommended to use different diagram for strenght and elongation. (Fig.10) is to small for understanding.
Conclusion 2 Define that the neutron irradiation dose (fluence) is thermal.
Conclusion 3. Rewrite this conclusion. The radiation hardening or embrittlement this case mostly depends on the thermal fluence, however in other cases the thermal/fast ratio can be very different. "Neutron injection" is not usual in the literature, use rather neutron irradiation. The English of the paper should be checked.
Author Response
Thank you very much for your comments; I have tried to revise the paper according to your comment, please check.
Author Response File: 
Author Response.pdf
Reviewer 2 Report
The work on Tensile property of irradiated LT21 Aluminium alloy sampled from decommissioned irradiation channel of heavy water research reactor is very interesting, although author neglecting various aspects. I suggested some recommendations and shortcomings that the author needs to address:
1.In the Abstract scientific values need to incorporate in all the findings and need to compare with control specimen
2.Similar findings need to be discussed before the conclusion part.
3,A summary of the research needs to be included in the conclusion, followed by outcome of the experiments with quantified values.
4 The average grain size is 108 µm Justify?
5.The Yield Strength (YS) in- 95 creased gradually from the initial 158MPa to 251MPa, and the Ultimate Tensile Strength 96 (UTS) increased from 262MPa to 321MPa how? Give some mechanism by justifying that due to that reason it was significantly improved - infer some similar findings
6. percentage of elongation needs to discuss.
7. dimple characteristics? use only standard terms related to tensile strength.
8. The effect of grain refinement and grain structure needs to be discussed
9. While discussing the outcome of experimentation needs to infer in same topic. it should not be split in to different zones
10 , since it is reputed journal the quantum of works needs to improve.
Author Response
Thank you for your detailed comments. I tried to revise the paper according to all your comment. And also, I made some responses to your comments, please check.
1.In the Abstract scientific values need to incorporate in all the findings and need to compare with control specimen
R: I have revised the abstract according to your comment, please check.
2.Similar findings need to be discussed before the conclusion part.
R: I have tried to modify the part other than the conclusion according to your advice, please check.
3,A summary of the research needs to be included in the conclusion, followed by outcome of the experiments with quantified values.
R: I have tried to revise the conclusion according to your advice, please check.
4 The average grain size is 108 µm Justify?
R: We get the grain size according to the direct measurement result of metallograph. I have added the description in the paper. You can also check the data from the metallograph of LT21.
5.The Yield Strength (YS) increased gradually from the initial 158MPa to 251MPa, and the Ultimate Tensile Strength (UTS) increased from 262MPa to 321MPa how? Give some mechanism by justifying that due to that reason it was significantly improved - infer some similar findings
R: I tried to discuss the mechanism in 4.2, please check.
- percentage of elongation needs to discuss.
R: It’s very important to discuss the percentage of elongation. However, it’s hard to discuss the percentage of elongation among different reference data. Because the elongation value depends on the gage length, and most references haven’t provide the detailed gage length and the test method.
- dimple characteristics? use only standard terms related to tensile strength.
R: “dimple characteristics” have been modified to “dimple fracture characteristics”. Some terms have been corrected, i.e. “Yield Strength” have been corrected to “Yield Stress”, “Ultimate Tensile Strength” have been corrected to “Ultimate Tensile Stress”, “EAB” have been corrected to “elongation”, these terms are often used in the published paper relate to Aluminium irradiation effect research.
- The effect of grain refinement and grain structure needs to be discussed
R: It would be interesting to discuss the grain refinement and grain structure, but the current published literatures haven’t reported the detail grain data, and it's hard to discuss without comparable data. In additional, according to our test result, the grain size haven’t been changed after irradiation, the previous research also haven’t shown obvious change of the grain after neutron irradiation under present fluence.
- While discussing the outcome of experimentation needs to infer in same topic. it should not be split in to different zones
R: I tried to modified according to your comment, please check.
10 , since it is reputed journal the quantum of works needs to improve.
R: Thanks for your advice, we tried to revise the paper according to your comment, please check.
Author Response File: Author Response.pdf
Round 2
Reviewer 1 Report
If you use shorter sentences it will increase the understanding of the paper.
Reviewer 2 Report
As it was informed earlier only one findings was contributed on the above research studies, but still its corrosion , Impact and other mechanical studies have not incorporated. If it suits for the norms of journal it may publish as in present form. since all the comments was verifies and it was acceptable
