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Trans Tech Publications, Materials Science Forum, (849), p. 317-320

DOI: 10.4028/www.scientific.net/msf.849.317

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Influence of Upsetting and Drawing Times on the Microstructure and Microtexture of TC4 Titanium Alloy

Journal article published in 2016 by Meng Qi Yan, Kai Li, Yu Hui Wang, Wang Feng Zhang
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

TC4 titanium alloys have been extensively used in the aerospace engineering due to the high specific strength, high temperature resistance and good corrosion resistance. However, unsuitable forging methods will cause unqualified mechanical properties in the height direction of forgings. The microstructure and microtexture of the forgings after two forging processes with different upsetting and drawing times were investigated by optical microscopy (OM) and electron back scattering diffraction (EBSD) technique. The results showed that bimodal microstructure and weak basal {0002} texture can be obtained after forging. With the increase of upsetting and drawing times, lamellar α were curved and coarsen, basal {0002} texture were enhanced, and the special 60°<11-20> preferred orientation between lamellar α phase due to Burgers relationship was avoided. The modification of microtexture and grain boundary distributions can improve the strength of TC4 titanium alloy forging in the height direction.