TY - JOUR
T1 - Mechanical properties of cast Ti-6Al-4V lattice block structures
AU - Li, Qizhen
AU - Chen, Edward Y.
AU - Bice, Douglas R.
AU - Dunand, David C.
N1 - Funding Information:
This work was supported by NASA–Glenn Research Center through Contract No. NNC04CA14C with guidance and encouragement from Drs. S.A. Padula II, M.V. Nathal, and S.L. Bowman. The authors also acknowledge Professors S.A. Guralnick and S. Mostovoy (Illinois Institute of Technology) for use of, and help with, panel compressive testing equipment.
PY - 2008/2
Y1 - 2008/2
N2 - Ti-6Al-4V lattice block structure panels were fabricated using an aerospace-quality investment casting process. Testing in compression, bending, and impact show that high strength, ductility, and energy absorption are achieved for both individual struts and full panels, despite the intricacies involved with casting fine struts (1.6 or 3.2 mm in diameter) from a highly reactive, poor-fluidity liquid titanium alloy. The panel stress-strain curve calculated by finite-element modeling correlates well with experimental results, indicating that the occasional defects, which are common to aerospace grade castings and may be present in the struts and nodes, have little detrimental effect on the overall panel compressive properties.
AB - Ti-6Al-4V lattice block structure panels were fabricated using an aerospace-quality investment casting process. Testing in compression, bending, and impact show that high strength, ductility, and energy absorption are achieved for both individual struts and full panels, despite the intricacies involved with casting fine struts (1.6 or 3.2 mm in diameter) from a highly reactive, poor-fluidity liquid titanium alloy. The panel stress-strain curve calculated by finite-element modeling correlates well with experimental results, indicating that the occasional defects, which are common to aerospace grade castings and may be present in the struts and nodes, have little detrimental effect on the overall panel compressive properties.
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U2 - 10.1007/s11661-007-9440-y
DO - 10.1007/s11661-007-9440-y
M3 - Article
AN - SCOPUS:38649123324
VL - 39
SP - 441
EP - 449
JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
SN - 1073-5623
IS - 2
ER -