@article{poongkundran_senthilkumar_2016,  title={Effect of Preheating on Microstructure and Tensile Properties of Friction Stir Welded AA7075 Aluminium Alloy Joints},  volume={59},  ISSN={1516-8913},  url={https://doi.org/10.1590/1678-4324-2016161056},  DOI={10.1590/1678-4324-2016161056},  number={spe2},  journal={Brazilian Archives of Biology and Technology},  publisher={Instituto de Tecnologia do Paraná - Tecpar},  author={Poongkundran, R. and Senthilkumar, K.},  year={2016} }