Paper Title:
Microstructure and Mechanical Properties of a Rapid Directionally Solidified Ti47Al Alloy
  Abstract

The ingot of Ti47Al alloy was prepared by a newly developed rapid directional solidification, the microstructure and compressive properties of the ingot was observed and tested. The results show that the macrostructure consisted mainly of coarse columnar grains parallel to the axial direction, with the size of 0.5mm wide and 10mm in length. The direction of lamellar is almost perpendicular to the growth direction in the longitudinal section and no dendritic core is found. The average ultimate compressive strength of the specimens with grain growth parallel/perpendicular to the compressive direction is 1233.3 and 861.7 MPa respectively. The fracture mode for specimens with grain growth parallel to the compressive direction exhibits predominantly translamellar fracture, however, that for specimens with grain growth perpendicular to the compressive direction exhibits predominantly delamenation or interlamellar fracture.

  Info
Periodical
Chapter
Chapter 2: Dynamics and Vibration
Edited by
Huixuan Zhang, Ye Han, Fuxiao Chen and Jiuba Wen
Pages
217-221
DOI
10.4028/www.scientific.net/AMM.117-119.217
Citation
R. R. Chen, H. S. Ding, J. J. Guo, Y. Q. Su, H. Z. Fu, "Microstructure and Mechanical Properties of a Rapid Directionally Solidified Ti47Al Alloy", Applied Mechanics and Materials, Vols. 117-119, pp. 217-221, 2012
Online since
October 2011
Export
Price
$32.00
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