Результаты исследований: Публикации в книгах, отчётах, сборниках, трудах конференций › статья в сборнике материалов конференции › научная › Рецензирование
Influence of UFG structure formation on mechanical and fatigue properties in Ti-6Al-7Nb alloy. / Polyakova, V.V.; Anumalasetty, V.N.; Semenova, I.P.; Valiev, R.Z.
Influence of UFG structure formation on mechanical and fatigue properties in Ti-6Al-7Nb alloy. 2014.Результаты исследований: Публикации в книгах, отчётах, сборниках, трудах конференций › статья в сборнике материалов конференции › научная › Рецензирование
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TY - GEN
T1 - Influence of UFG structure formation on mechanical and fatigue properties in Ti-6Al-7Nb alloy
AU - Polyakova, V.V.
AU - Anumalasetty, V.N.
AU - Semenova, I.P.
AU - Valiev, R.Z.
PY - 2014
Y1 - 2014
N2 - Ultrafine-grained (UFG) Ti alloys have potential applications in osteosynthesis and orthopedics due to high bio-compatibility and increased weight-to- strength ratio. In current study, Ti6Al7Nb ELI alloy is processed through equal channel angular pressing-conform (ECAP-Conform) and subsequent thermomechanical processing to generate a UFG microstructure. The fatigue properties of UFG alloys are compared to coarse grained (CG) alloys. Our study demonstrates that the UFG alloys with an average grain size of ∼180 nm showed 35% enhancement of fatigue endurance limit as compared to coarse-grained alloys. On the fracture surfaces of the UFG and CG samples fatigue striations and dimpled relief were observed. However, the fracture surface of the UFG sample looks smoother; fewer amounts of secondary micro-cracks and more ductile rupture were also observed, which testifies to the good crack resistance in the UFG alloy after high-cyclic fatigue tests. © Published under licence by IOP Publishing Ltd.
AB - Ultrafine-grained (UFG) Ti alloys have potential applications in osteosynthesis and orthopedics due to high bio-compatibility and increased weight-to- strength ratio. In current study, Ti6Al7Nb ELI alloy is processed through equal channel angular pressing-conform (ECAP-Conform) and subsequent thermomechanical processing to generate a UFG microstructure. The fatigue properties of UFG alloys are compared to coarse grained (CG) alloys. Our study demonstrates that the UFG alloys with an average grain size of ∼180 nm showed 35% enhancement of fatigue endurance limit as compared to coarse-grained alloys. On the fracture surfaces of the UFG and CG samples fatigue striations and dimpled relief were observed. However, the fracture surface of the UFG sample looks smoother; fewer amounts of secondary micro-cracks and more ductile rupture were also observed, which testifies to the good crack resistance in the UFG alloy after high-cyclic fatigue tests. © Published under licence by IOP Publishing Ltd.
U2 - 10.1088/1757-899X/63/1/012162
DO - 10.1088/1757-899X/63/1/012162
M3 - Conference contribution
BT - Influence of UFG structure formation on mechanical and fatigue properties in Ti-6Al-7Nb alloy
ER -
ID: 7038161