Effect of displacement dose and irradiation temperature on tensile and fracture toughness properties of titanium alloys

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Abstract

At a low dose level of 0.001 dpa the Ti6Al4V (α + β) alloy showed softening and at higher doses an increase in hardening and lack of work hardening after irradiation at 60 °C. The (α + β) alloy seemed to suffer from plastic instability when irradiated to a dose level of 0.3 dpa at 60 °C. At elevated temperatures a substantial amount of hardening was observed in the (α + β) alloy when tested in the irradiated condition. Earlier studies have shown that the fracture toughness behaviour of the irradiated Ti5Al2.5Sn (α) and (α + β) alloys were quite similar at ambient temperatures. At elevated temperatures, fracture toughness of the irradiated (α + β) alloy decreased more than that of the (α) alloy when compared to the results obtained in the unirradiated condition. The large irradiation hardening and loss of fracture toughness in the (α + β) alloy appears to be related to radiation dose level, temperature and radiation-induced precipitation in the (α + β) alloy.
Original languageEnglish
Pages (from-to)627-632
JournalJournal of Nuclear Materials
Volume367-370
Issue numberPart. A
DOIs
Publication statusPublished - 2007
MoE publication typeA1 Journal article-refereed

Fingerprint

titanium alloys
toughness
fracture strength
Titanium alloys
Dosimetry
Fracture toughness
Irradiation
dosage
irradiation
hardening
Hardening
Temperature
temperature
work hardening
radiation
Strain hardening
softening
ambient temperature
plastics
Plastics

Keywords

  • titanium
  • titanium alloys
  • fusion energy
  • fusion reactors
  • tensile strength
  • tensile stress
  • fracture toughness

Cite this

@article{714ef15058374e5da9f05c874299848d,
title = "Effect of displacement dose and irradiation temperature on tensile and fracture toughness properties of titanium alloys",
abstract = "At a low dose level of 0.001 dpa the Ti6Al4V (α + β) alloy showed softening and at higher doses an increase in hardening and lack of work hardening after irradiation at 60 °C. The (α + β) alloy seemed to suffer from plastic instability when irradiated to a dose level of 0.3 dpa at 60 °C. At elevated temperatures a substantial amount of hardening was observed in the (α + β) alloy when tested in the irradiated condition. Earlier studies have shown that the fracture toughness behaviour of the irradiated Ti5Al2.5Sn (α) and (α + β) alloys were quite similar at ambient temperatures. At elevated temperatures, fracture toughness of the irradiated (α + β) alloy decreased more than that of the (α) alloy when compared to the results obtained in the unirradiated condition. The large irradiation hardening and loss of fracture toughness in the (α + β) alloy appears to be related to radiation dose level, temperature and radiation-induced precipitation in the (α + β) alloy.",
keywords = "titanium, titanium alloys, fusion energy, fusion reactors, tensile strength, tensile stress, fracture toughness",
author = "Seppo T{\"a}htinen and P. Moilanen and Singh, {B. N.}",
year = "2007",
doi = "10.1016/j.jnucmat.2007.03.042",
language = "English",
volume = "367-370",
pages = "627--632",
journal = "Journal of Nuclear Materials",
issn = "0022-3115",
publisher = "Elsevier",
number = "Part. A",

}

Effect of displacement dose and irradiation temperature on tensile and fracture toughness properties of titanium alloys. / Tähtinen, Seppo; Moilanen, P.; Singh, B. N.

In: Journal of Nuclear Materials, Vol. 367-370 , No. Part. A, 2007, p. 627-632.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Effect of displacement dose and irradiation temperature on tensile and fracture toughness properties of titanium alloys

AU - Tähtinen, Seppo

AU - Moilanen, P.

AU - Singh, B. N.

PY - 2007

Y1 - 2007

N2 - At a low dose level of 0.001 dpa the Ti6Al4V (α + β) alloy showed softening and at higher doses an increase in hardening and lack of work hardening after irradiation at 60 °C. The (α + β) alloy seemed to suffer from plastic instability when irradiated to a dose level of 0.3 dpa at 60 °C. At elevated temperatures a substantial amount of hardening was observed in the (α + β) alloy when tested in the irradiated condition. Earlier studies have shown that the fracture toughness behaviour of the irradiated Ti5Al2.5Sn (α) and (α + β) alloys were quite similar at ambient temperatures. At elevated temperatures, fracture toughness of the irradiated (α + β) alloy decreased more than that of the (α) alloy when compared to the results obtained in the unirradiated condition. The large irradiation hardening and loss of fracture toughness in the (α + β) alloy appears to be related to radiation dose level, temperature and radiation-induced precipitation in the (α + β) alloy.

AB - At a low dose level of 0.001 dpa the Ti6Al4V (α + β) alloy showed softening and at higher doses an increase in hardening and lack of work hardening after irradiation at 60 °C. The (α + β) alloy seemed to suffer from plastic instability when irradiated to a dose level of 0.3 dpa at 60 °C. At elevated temperatures a substantial amount of hardening was observed in the (α + β) alloy when tested in the irradiated condition. Earlier studies have shown that the fracture toughness behaviour of the irradiated Ti5Al2.5Sn (α) and (α + β) alloys were quite similar at ambient temperatures. At elevated temperatures, fracture toughness of the irradiated (α + β) alloy decreased more than that of the (α) alloy when compared to the results obtained in the unirradiated condition. The large irradiation hardening and loss of fracture toughness in the (α + β) alloy appears to be related to radiation dose level, temperature and radiation-induced precipitation in the (α + β) alloy.

KW - titanium

KW - titanium alloys

KW - fusion energy

KW - fusion reactors

KW - tensile strength

KW - tensile stress

KW - fracture toughness

U2 - 10.1016/j.jnucmat.2007.03.042

DO - 10.1016/j.jnucmat.2007.03.042

M3 - Article

VL - 367-370

SP - 627

EP - 632

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

IS - Part. A

ER -