Irradiation behaviour of titanium alloys for ITER blanket modules flexible attachment

Materials challenges for ITER – Current status and future activities

“…At the expected operational conditions (damage dose of 0.1 dpa, temperature -150-260°C), the uniform elongation of Ti-6Al-4V alloy remains higher that 5%, as shown in Fig. 6 [18,19]. The fracture toughness values after irradiation, [18,19].…”

Irradiation behavior of Ti–4Al–2V (ΠT-3B) alloy for ITER blanket modules flexible attachment

“…At lower strain amplitudes, the cyclic strength of the irradiated specimens was approximately the same as in the initial state. Neutron irradiation of (a + b)-Ti-6Al-4V alloy has been performed in the framework of the ITER R&D program [15]. The comparison data for irradiated and unirradiated (a)-Ti-4Al-2V alloy obtained in this work and (a + b)-Ti-6Al-4V alloy [15] are presented in Table 3.…”

“…Neutron irradiation of (a + b)-Ti-6Al-4V alloy has been performed in the framework of the ITER R&D program [15]. The comparison data for irradiated and unirradiated (a)-Ti-4Al-2V alloy obtained in this work and (a + b)-Ti-6Al-4V alloy [15] are presented in Table 3. The average values of results at 260°C were used in Table 3.…”

Effect of fast neutron irradiation on tensile properties of AISI 304 stainless steel and alloy Ti–6Al–4V

“…Also it is considered a candidate material for flexible attachment of shield blanket modules in the ITER reactor owing to its advantageous combination of properties like high specific strength, excellent resistance against environmental degradation, low modulus of elasticity, high resistance to impact loading and low coefficient of thermal expansion. Recently, effect of neutron irradiation has been studied on tensile properties, fracture toughness, low cycle fatigue, phase stability, plasticity and microstructure of the alloys Ti-6Al-4V, Ti-5Al-2.5Sn, intermetallic compound Ti-35Al-10V and alloys of Ti-Al [10][11][12][13]. Fast neutron irradiation at 50 • C and 350 • C to fluence of 1.5 × 10 24 ncm −2 was observed to cause hardening, plastic instability and substantial reduction in fracture toughness of the alloy Ti-6Al-4V due to irradiation induced precipitation [10].…”