**4. Conclusions**

Dissimilar Ti-6Al-4V/Nitinol friction welds have been analyzed for weld macro and microstructures, grain sizes, hardnesses and tensile properties. The following conclusions can be drawn:


**Author Contributions:** Conceptualization, A.U.R., Y.S.U. and H.A.-K.; methodology, A.U.R., N.K.B., M.K.T. and Y.S.U.; formal analysis, A.U.R., N.K.B., M.K.T., Y.S.U. and H.A.-K.; investigation, A.U.R., N.K.B., M.K.T. and Y.S.U.; resources, A.U.R., Y.S.U. and H.A.-K.; data curation, A.U.R., N.K.B. and M.K.T.; writing—original draft preparation, A.U.R., N.K.B. and M.K.T.; writing—review and editing, A.U.R., N.K.B., M.K.T., Y.S.U. and H.A.-K.; visualization, A.U.R., N.K.B. and M.K.T.; supervision, A.U.R., N.K.B. and M.K.T.; project administration, A.U.R., and Y.S.U.; funding acquisition, A.U.R., Y.S.U. and H.A.-K. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research was funded by the National Plan for Science, Technology and Innovation (MAARIFAH), King Abdulaziz City for Science and Technology, Kingdom of Saudi Arabia, Award Number (14-ADV110-02).

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** Data is contained within the article "Microstructure and Mechanical Properties of Dissimilar Friction Welded Ti-6Al-4V to Nitinol Joints".

**Acknowledgments:** This Project was funded by the National Plan for Science, Technology and Innovation (MAARIFAH), King Abdulaziz City for Science and Technology, Kingdom of Saudi Arabia, Award Number (14-ADV110-02). The authors acknowledge Ashfaq Mohammad at the National Manufacturing Institute Scotland for his technical inputs during the experimental and writeup stages of the present work.

**Conflicts of Interest:** The authors declare no conflict of interest.
