@ARTICLE{Król_Janusz_The_2002,
 author={Król, Janusz and Tałach-Domańska, Marta},
 number={No 1},
 journal={Archives of Metallurgy and Materials},
 pages={17-26},
 howpublished={online},
 year={2002},
 publisher={Institute of Metallurgy and Materials Science of Polish Academy of Sciences},
 publisher={Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences},
 abstract={The superplastic deformation process is interesting not only from the scientific point of view but also because of benefits it offers when applied in industry. The generation of superplastic structures in aluminium alloys of the 7XXX type depends on the formation of precipitates in suitable amount, size and dispersion which may be obtained by thermomechanical treatment. The A7475 alloy was continuously cast, extruded and thermomechanically treated. The investigations on creating precipitates and microstructure of the AIZnCuMgCr alloy were performed using optical, scanning and transmission electron microscopy and X-ray phase analysis. The morphology of the alloy after a full thermomechanical treatment showed fine, equiaxial average grain about 12 urn in size. The strain rate sensitivity coefficient m determined from tensile tests was estimated between 0.56-0.70. About 495 pct elongation was obtained in a tension test at the flow stress of 3 MPa, strain rate 8 x I O 3s I and temperature 790 K. It demonstrates that material of good superplastic properties was elaborated.},
 type={Article},
 title={The Superplastic State in A7475 alloy Related to the Structure: and Mechanical Properties},
 URL={http://czasopisma.pan.pl/Content/131769/PDF-MASTER/4_METALLURGY_47_1_2002_Krol_SUPERPLASTIC.pdf},
}