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Effect of preparation techniques on creep characteristics of the Zr-2. 5% Nb alloy at temperatures of 673 to 823 K

Journal Article:

Abstract

The effect of the initial raw material - zirconium sponge or zirconium iodide - on some creep and stres-strain properties was studied on Zr-2.5%Nb alloy by a stress-strain test at constant crosshead speed and by strain-rate sensitivity testing. Dependence of the creep characteristics on cooling conditions after solution treatment was examined. Alloy made from Zr-sponge was used for measurement of steady-state creep rate on time to fracture dependence and steady-state creep rate on time to fracture with respect to the angle between rolling direction of alloy sheets and tensile axis. Transmission electron microscopy was used for structure study of both alloys after different heat treatment. Higher creep strength of the alloy made from iodide zirconium (after respective heat treatment) than that of the alloy made from Zr-sponge is discussed. Oxygen content and its effect on structural changes during heat treatment seems to be responsible for higher creep strength of the first alloy. On the other hand the difference of respective creep strengths is not so significant as to justify production of Zr-2.5%Nb alloy and perhaps of future high-strength Zr alloys (for applications in structural components in reactors in the temperature range of 673 to 773 K) from iodide zirconium. Results  More>>
Authors:
Pahutova, M; Kreici, J; Polesna, M [1] 
  1. Ceskoslovenska Akademie Ved, Brno. Ustav Fyzikalni Metalurgie
Publication Date:
Jan 01, 1976
Product Type:
Journal Article
Reference Number:
AIX-08-283333; EDB-77-036670
Resource Relation:
Journal Name: Kovove Mater.; (Czechoslovakia); Journal Volume: 14:1
Subject:
36 MATERIALS SCIENCE; NIOBIUM ALLOYS; CREEP; ZIRCONIUM BASE ALLOYS; AGING; BINARY ALLOY SYSTEMS; HIGH TEMPERATURE; MICROSTRUCTURE; PHASE TRANSFORMATIONS; QUENCHING; STRESSES; TEMPERATURE DEPENDENCE; ALLOY SYSTEMS; ALLOYS; CRYSTAL STRUCTURE; HEAT TREATMENTS; MECHANICAL PROPERTIES; ZIRCONIUM ALLOYS; 360103* - Metals & Alloys- Mechanical Properties
OSTI ID:
7325007
Country of Origin:
Serbia and Montenegro
Language:
Czech
Other Identifying Numbers:
Journal ID: CODEN: KOMAA
Submitting Site:
INIS
Size:
Pages: 100-116
Announcement Date:

Journal Article:

Citation Formats

Pahutova, M, Kreici, J, and Polesna, M. Effect of preparation techniques on creep characteristics of the Zr-2. 5% Nb alloy at temperatures of 673 to 823 K. Serbia and Montenegro: N. p., 1976. Web.
Pahutova, M, Kreici, J, & Polesna, M. Effect of preparation techniques on creep characteristics of the Zr-2. 5% Nb alloy at temperatures of 673 to 823 K. Serbia and Montenegro.
Pahutova, M, Kreici, J, and Polesna, M. 1976. "Effect of preparation techniques on creep characteristics of the Zr-2. 5% Nb alloy at temperatures of 673 to 823 K." Serbia and Montenegro.
@misc{etde_7325007,
title = {Effect of preparation techniques on creep characteristics of the Zr-2. 5% Nb alloy at temperatures of 673 to 823 K}
author = {Pahutova, M, Kreici, J, and Polesna, M}
abstractNote = {The effect of the initial raw material - zirconium sponge or zirconium iodide - on some creep and stres-strain properties was studied on Zr-2.5%Nb alloy by a stress-strain test at constant crosshead speed and by strain-rate sensitivity testing. Dependence of the creep characteristics on cooling conditions after solution treatment was examined. Alloy made from Zr-sponge was used for measurement of steady-state creep rate on time to fracture dependence and steady-state creep rate on time to fracture with respect to the angle between rolling direction of alloy sheets and tensile axis. Transmission electron microscopy was used for structure study of both alloys after different heat treatment. Higher creep strength of the alloy made from iodide zirconium (after respective heat treatment) than that of the alloy made from Zr-sponge is discussed. Oxygen content and its effect on structural changes during heat treatment seems to be responsible for higher creep strength of the first alloy. On the other hand the difference of respective creep strengths is not so significant as to justify production of Zr-2.5%Nb alloy and perhaps of future high-strength Zr alloys (for applications in structural components in reactors in the temperature range of 673 to 773 K) from iodide zirconium. Results of creep and stress-strain (short time) testing are briefly discussed.}
journal = {Kovove Mater.; (Czechoslovakia)}
volume = {14:1}
journal type = {AC}
place = {Serbia and Montenegro}
year = {1976}
month = {Jan}
}