Abstract
Result of high-resolution creep rate measurements are described for estimating very long term creep life of copper and silver alloyed copper at room temperature and at stresses approaching the expected service conditions of final repository canisters. The aim was to assess the limiting service stress levels for potential canister wall materials. The 0.1 % silver alloyed copper showed minimum creep rates of 10{sup -}9 to 10{sup -}10 l/h, corresponding to 1 % strain in about 1000 to 10000 years, at room temperature and uniaxial stress level of 50 to 75 MPa. The predicted time to 1 % strain, when extrapolated from literature data, was at least one order of magnitude shorter. From the results of the present work, the 1 % creep life for OFHC copper was at most a few hundreds of years at 50 MPa stress level. The technique developed and used in this work for measuring very low strain rates appears useful for assessing low temperature creep life of practical structures essentially without accelerating the test from the service conditions.
Auerkari, P;
Leinonen, H.;
Sandlin, S
[1]
- Valtion Teknillinen Tutkimuskeskus, Espoo (Finland). Metallilaboratorio
Citation Formats
Auerkari, P, Leinonen, H., and Sandlin, S.
Creep of OFHC and silver copper at simulated final repository canister-service conditions.
Finland: N. p.,
1991.
Web.
Auerkari, P, Leinonen, H., & Sandlin, S.
Creep of OFHC and silver copper at simulated final repository canister-service conditions.
Finland.
Auerkari, P, Leinonen, H., and Sandlin, S.
1991.
"Creep of OFHC and silver copper at simulated final repository canister-service conditions."
Finland.
@misc{etde_10104148,
title = {Creep of OFHC and silver copper at simulated final repository canister-service conditions}
author = {Auerkari, P, Leinonen, H., and Sandlin, S}
abstractNote = {Result of high-resolution creep rate measurements are described for estimating very long term creep life of copper and silver alloyed copper at room temperature and at stresses approaching the expected service conditions of final repository canisters. The aim was to assess the limiting service stress levels for potential canister wall materials. The 0.1 % silver alloyed copper showed minimum creep rates of 10{sup -}9 to 10{sup -}10 l/h, corresponding to 1 % strain in about 1000 to 10000 years, at room temperature and uniaxial stress level of 50 to 75 MPa. The predicted time to 1 % strain, when extrapolated from literature data, was at least one order of magnitude shorter. From the results of the present work, the 1 % creep life for OFHC copper was at most a few hundreds of years at 50 MPa stress level. The technique developed and used in this work for measuring very low strain rates appears useful for assessing low temperature creep life of practical structures essentially without accelerating the test from the service conditions.}
place = {Finland}
year = {1991}
month = {Jul}
}
title = {Creep of OFHC and silver copper at simulated final repository canister-service conditions}
author = {Auerkari, P, Leinonen, H., and Sandlin, S}
abstractNote = {Result of high-resolution creep rate measurements are described for estimating very long term creep life of copper and silver alloyed copper at room temperature and at stresses approaching the expected service conditions of final repository canisters. The aim was to assess the limiting service stress levels for potential canister wall materials. The 0.1 % silver alloyed copper showed minimum creep rates of 10{sup -}9 to 10{sup -}10 l/h, corresponding to 1 % strain in about 1000 to 10000 years, at room temperature and uniaxial stress level of 50 to 75 MPa. The predicted time to 1 % strain, when extrapolated from literature data, was at least one order of magnitude shorter. From the results of the present work, the 1 % creep life for OFHC copper was at most a few hundreds of years at 50 MPa stress level. The technique developed and used in this work for measuring very low strain rates appears useful for assessing low temperature creep life of practical structures essentially without accelerating the test from the service conditions.}
place = {Finland}
year = {1991}
month = {Jul}
}