TY - GEN
T1 - Evaluation of fracture toughness of alpha-Nb5Si3 by micro-sized cantilever beam testing
AU - Suzuki, Shiori
AU - Sekido, Nobuaki
AU - Ohmura, Takahito
AU - Miura, Seiji
PY - 2015/1/1
Y1 - 2015/1/1
N2 - A micro-sized fracture testing method has been applied to investigate fracture toughness of alpha-Nb5Si3. Chevron-notched single crystal specimens with a size of 3 × 3 × 15 μm3 were prepared in a grain of polycrystalline alpha-Nb5Si3 by focused ion beam, FIB, technique. Fracture tests were conducted using a nanoindenter at room temperature and linear load-displacement curves and smooth fracture surfaces were obtained. This fracture behavior was presumed to be brittle fracture similar to bulk alpha-Nb5Si3. The average of fracture toughness Kq is 3.45 ± 0.29 MPa√m under a small-scale yielding condition.
AB - A micro-sized fracture testing method has been applied to investigate fracture toughness of alpha-Nb5Si3. Chevron-notched single crystal specimens with a size of 3 × 3 × 15 μm3 were prepared in a grain of polycrystalline alpha-Nb5Si3 by focused ion beam, FIB, technique. Fracture tests were conducted using a nanoindenter at room temperature and linear load-displacement curves and smooth fracture surfaces were obtained. This fracture behavior was presumed to be brittle fracture similar to bulk alpha-Nb5Si3. The average of fracture toughness Kq is 3.45 ± 0.29 MPa√m under a small-scale yielding condition.
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U2 - 10.1557/opl.2015.147
DO - 10.1557/opl.2015.147
M3 - Conference contribution
AN - SCOPUS:84938906474
T3 - Materials Research Society Symposium Proceedings
SP - 187
EP - 192
BT - Advanced Structural and Functional Intermetallic-Based Alloys
A2 - Baker, I.
A2 - Heilmaier, M.
A2 - Kishida, K.
A2 - Mills, M.
A2 - Miura, S.
PB - Materials Research Society
T2 - 2014 MRS Fall Meeting
Y2 - 30 November 2014 through 5 December 2014
ER -