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 journalArticleScientificpeer-review

16 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 languageEnglish
Pages (from-to)416-420
JournalJournal of Nuclear Materials
Volume307-311
Issue numberPart 1
DOIs
Publication statusPublished - 2002
MoE publication typeA1 Journal article-refereed

Fingerprint

titanium alloys
toughness
fracture strength
Titanium alloys
Fracture toughness
Neutrons
neutrons
Neutron irradiation
neutron irradiation
hardening
Hardening
Irradiation
irradiation
ductility
tensile strength
ambient temperature
Dosimetry
Ductility
Tensile strength
plastics

Keywords

  • titanium
  • titanium alloys
  • irradiation
  • irradiation embrittlement
  • fusion energy
  • fusion reactors
  • ITER

Cite this

@article{d51cbe9f85844721b2b3425cc82136e9,
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",
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pages = "416--420",
journal = "Journal of Nuclear Materials",
issn = "0022-3115",
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Tensile and fracture toughness properties of unirradiated and neutron irradiated titanium alloys. / Tähtinen, Seppo (Corresponding Author); Moilanen, Pekka; Singh, B.N.; Edwards, D.J.

In: Journal of Nuclear Materials, Vol. 307-311, No. Part 1, 2002, p. 416-420.

Research output: Contribution to journalArticleScientificpeer-review

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

VL - 307-311

SP - 416

EP - 420

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

IS - Part 1

ER -