SYMPOSIA PAPER Published: 01 January 2004

Changes in Mechanical Properties of High-Purity V-4Cr-4Ti-Si, Al, Y Alloys after Neutron Irradiation at Relatively Low Temperatures


Mechanical properties after neutron irradiation of V-4Cr-4Ti-0.1Si-0.1Al-0.1Y and V-4Cr-4Ti-0.1Si-0.1Al-0.3Y alloys (nominal weight percentage) were studied. Neutron irradiation was carried out at 290°C to 8×1022 n/m2 (E>1 MeV, about 0.014 dpa) in the Japan Materials Testing Reactor (JMTR). Tensile tests were carried out using miniaturized specimens at ambient temperature and irradiation temperature. Charpy impact tests were conducted at temperatures from -196 to 0°C using an instrumented machine. There is little difference in tensile properties after neutron irradiation between the two alloys. Increase in yield stress was relatively small (∼100 MPa), and uniform elongation remained more than 10%. Because of a low concentration of interstitial impurities, good tensile properties could be retained even after neutron irradiation at 290°C. Ductile-to-brittle transition temperature (DBTT) of V-4Cr-4Ti-0.1Si-0.1Al-0.1Y alloys hardly changed, whereas absorbed energy was slightly reduced after neutron irradiation.

Author Information

Chuto, T
National Institute for Materials Science, Ibaraki, Japan
Satou, M
Tohoku University, Miyagi, Japan
Hasegawa, A
Tohoku University, Miyagi, Japan
Abe, K
Tohoku University, Miyagi, Japan
Muroga, T
National Institute for Fusion Science, Gifu, Japan
Yamamoto, N
National Institute for Materials Science, Ibaraki, Japan
Price: $25.00
Contact Sales
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Developed by Committee: E10
Pages: 693–701
DOI: 10.1520/STP11267S
ISBN-EB: 978-0-8031-5494-0
ISBN-13: 978-0-8031-3477-5