Tensile and fracture toughness properties of unirradiated and neutron irradiated titanium alloys

Seppo Tähtinen; Pekka Moilanen; B.N. Singh; D.J. Edwards

doi:10.1016/S0022-3115(02)01010-3

Tensile and fracture toughness properties of unirradiated and neutron irradiated titanium alloys

Seppo Tähtinen (Corresponding Author), Pekka Moilanen, B.N. Singh, D.J. Edwards

Research output: Contribution to journal › Article › Scientific › peer-review

25 Citations (Scopus)

Abstract

In the unirradiated condition the Ti6Al4V (α+β) alloy has slightly higher tensile strength and noticeably lower ductility compared to that of the Ti5Al2.5Sn (α) alloy both at 50 and 350 °C. The fracture toughness behaviour of both alloys is similar at ambient temperature. At 350 °C, on the other hand, the fracture toughness of the (α) alloy is lower compared to that of the (α+β) alloy.
Neutron irradiation at 50 °C to a dose level of 0.3 dpa caused hardening, plastic instability and a substantial reduction in fracture toughness of both alloys. Irradiation at 350 °C resulted in a substantial hardening and a significant decrease in the fracture toughness in the (α+β) alloy due to irradiation induced precipitation whereas only minor changes in the tensile and fracture toughness behaviour were observed in the (α) alloy.
The tensile and fracture toughness properties of the (α+β) alloy are more strongly affected by neutron irradiation compared to that of the (α) alloy.

Original language	English
Pages (from-to)	416-420
Journal	Journal of Nuclear Materials
Volume	307-311
Issue number	Part 1
DOIs	https://doi.org/10.1016/S0022-3115(02)01010-3
Publication status	Published - 2002
MoE publication type	A1 Journal article-refereed
Event	10th International Conference on Fusion Reactor Materials, ICFRM-10 - Baden-Baden, Germany Duration: 14 Oct 2001 → 19 Oct 2001

Keywords

titanium
titanium alloys
irradiation
irradiation embrittlement
fusion energy
fusion reactors
ITER

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10.1016/S0022-3115(02)01010-3

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title = "Tensile and fracture toughness properties of unirradiated and neutron irradiated titanium alloys",

abstract = "In the unirradiated condition the Ti6Al4V (α+β) alloy has slightly higher tensile strength and noticeably lower ductility compared to that of the Ti5Al2.5Sn (α) alloy both at 50 and 350 °C. The fracture toughness behaviour of both alloys is similar at ambient temperature. At 350 °C, on the other hand, the fracture toughness of the (α) alloy is lower compared to that of the (α+β) alloy. Neutron irradiation at 50 °C to a dose level of 0.3 dpa caused hardening, plastic instability and a substantial reduction in fracture toughness of both alloys. Irradiation at 350 °C resulted in a substantial hardening and a significant decrease in the fracture toughness in the (α+β) alloy due to irradiation induced precipitation whereas only minor changes in the tensile and fracture toughness behaviour were observed in the (α) alloy. The tensile and fracture toughness properties of the (α+β) alloy are more strongly affected by neutron irradiation compared to that of the (α) alloy.",

keywords = "titanium, titanium alloys, irradiation, irradiation embrittlement, fusion energy, fusion reactors, ITER",

author = "Seppo T{\"a}htinen and Pekka Moilanen and B.N. Singh and D.J. Edwards",

year = "2002",

doi = "10.1016/S0022-3115(02)01010-3",

language = "English",

volume = "307-311",

pages = "416--420",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier",

number = "Part 1",

note = "10th International Conference on Fusion Reactor Materials, ICFRM-10 ; Conference date: 14-10-2001 Through 19-10-2001",

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TY - JOUR

T1 - Tensile and fracture toughness properties of unirradiated and neutron irradiated titanium alloys

AU - Tähtinen, Seppo

AU - Moilanen, Pekka

AU - Singh, B.N.

AU - Edwards, D.J.

PY - 2002

Y1 - 2002

N2 - In the unirradiated condition the Ti6Al4V (α+β) alloy has slightly higher tensile strength and noticeably lower ductility compared to that of the Ti5Al2.5Sn (α) alloy both at 50 and 350 °C. The fracture toughness behaviour of both alloys is similar at ambient temperature. At 350 °C, on the other hand, the fracture toughness of the (α) alloy is lower compared to that of the (α+β) alloy. Neutron irradiation at 50 °C to a dose level of 0.3 dpa caused hardening, plastic instability and a substantial reduction in fracture toughness of both alloys. Irradiation at 350 °C resulted in a substantial hardening and a significant decrease in the fracture toughness in the (α+β) alloy due to irradiation induced precipitation whereas only minor changes in the tensile and fracture toughness behaviour were observed in the (α) alloy. The tensile and fracture toughness properties of the (α+β) alloy are more strongly affected by neutron irradiation compared to that of the (α) alloy.

AB - In the unirradiated condition the Ti6Al4V (α+β) alloy has slightly higher tensile strength and noticeably lower ductility compared to that of the Ti5Al2.5Sn (α) alloy both at 50 and 350 °C. The fracture toughness behaviour of both alloys is similar at ambient temperature. At 350 °C, on the other hand, the fracture toughness of the (α) alloy is lower compared to that of the (α+β) alloy. Neutron irradiation at 50 °C to a dose level of 0.3 dpa caused hardening, plastic instability and a substantial reduction in fracture toughness of both alloys. Irradiation at 350 °C resulted in a substantial hardening and a significant decrease in the fracture toughness in the (α+β) alloy due to irradiation induced precipitation whereas only minor changes in the tensile and fracture toughness behaviour were observed in the (α) alloy. The tensile and fracture toughness properties of the (α+β) alloy are more strongly affected by neutron irradiation compared to that of the (α) alloy.

KW - titanium

KW - titanium alloys

KW - irradiation

KW - irradiation embrittlement

KW - fusion energy

KW - fusion reactors

KW - ITER

U2 - 10.1016/S0022-3115(02)01010-3

DO - 10.1016/S0022-3115(02)01010-3

M3 - Article

SN - 0022-3115

VL - 307-311

SP - 416

EP - 420

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - Part 1

T2 - 10th International Conference on Fusion Reactor Materials, ICFRM-10

Y2 - 14 October 2001 through 19 October 2001

ER -

Tensile and fracture toughness properties of unirradiated and neutron irradiated titanium alloys

Abstract

Keywords

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