TY - GEN
T1 - Compressive properties of high Nb-TiAl porous materials fabricated by element powder metallurgy
AU - Yang, Fan
AU - Lin, Junpin
AU - He, Yuehui
AU - Chen, Guoliang
PY - 2012
Y1 - 2012
N2 - High Nb containing TiAl alloys have a great potential for high temperature applications in aerospace and automotive fields because of their high strength, low density, high modulus, good resistance to creep and high temperature oxidation. Additionally, the porous high Nb containing TiAl alloys by elemental powder metallurgy (EPM) can be extended to many applications, such as insulation, catalytic carrier, and littering and so on. The compressive behavior of T-48A-6Nb porous alloys fabricated by EPM was studied. The compression was tested at various temperatures ranging from room temperature to 1200°C ,and strain rate was 1X10-3/s, with the objective to evaluate fracture and pore evolution mechanism. As temperature increases, the mean stress and remained plastic strain range increase, which leads to the failure of porous alloys. The fracture way for compression is transgranular cleavage below 800°C. But at 1000°C plastic deformation occurs. And at 1200°C the porous materials have been softened and failure under low stress.
AB - High Nb containing TiAl alloys have a great potential for high temperature applications in aerospace and automotive fields because of their high strength, low density, high modulus, good resistance to creep and high temperature oxidation. Additionally, the porous high Nb containing TiAl alloys by elemental powder metallurgy (EPM) can be extended to many applications, such as insulation, catalytic carrier, and littering and so on. The compressive behavior of T-48A-6Nb porous alloys fabricated by EPM was studied. The compression was tested at various temperatures ranging from room temperature to 1200°C ,and strain rate was 1X10-3/s, with the objective to evaluate fracture and pore evolution mechanism. As temperature increases, the mean stress and remained plastic strain range increase, which leads to the failure of porous alloys. The fracture way for compression is transgranular cleavage below 800°C. But at 1000°C plastic deformation occurs. And at 1200°C the porous materials have been softened and failure under low stress.
KW - Compression test
KW - Elemental powder metallurgy
KW - Porous high Nb-TiAl alloys intermetallic
UR - https://www.scopus.com/pages/publications/84883121838
M3 - 会议稿件
AN - SCOPUS:84883121838
SN - 9787030338952
T3 - Ti 2011 - Proceedings of the 12th World Conference on Titanium
SP - 1511
EP - 1514
BT - Ti 2011 - Proceedings of the 12th World Conference on Titanium
T2 - 12th World Conference on Titanium, Ti 2011
Y2 - 19 June 2011 through 24 June 2011
ER -