Plasma and Fusion Research

Volume 6, 2405121 (2011)

Regular Articles

Mechanical Properties of V-4Cr-4Ti after Exposure in Static Lithium at 650 °C
Pengfei ZHENG1), Takuya NAGASAKA1,2), Takeo MUROGA1,2), Masatoshi KONDO1,2) and Jiming CHEN3)
1)
The Graduate University for Advanced Studies (Sokendai), Toki 509-5292, Japan
2)
National Institute for Fusion Science, Toki 509-5292, Japan
3)
Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
(Received 22 December 2010 / Accepted 17 May 2011 / Published 11 August 2011)

Abstract

V-4Cr-4Ti is a leading candidate material for self-cooled liquid Li blanket in a fusion reactor. The interaction between Li and the alloy is of concern, because the mechanical properties of the alloy may be influenced by the mass transfer between liquid Li and the alloy. The present study focuses on the mechanical properties of V-4Cr-4Ti alloy after exposure in static Li at 650 °C for 248 hrs. Results show that the V-4Cr-4Ti alloys are strengthened by the Li exposure. The strengthening for the alloys varies with thermomechanical treatments before exposure. The behavior seems to be corresponding to the formation of precipitates due to trapping of C and N by Ti from the liquid Li.

Keywords

V-4Cr-4Ti, lithium, mechanical property, precipitate, strengthening

DOI: 10.1585/pfr.6.2405121

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This paper may be cited as follows:

Pengfei ZHENG, Takuya NAGASAKA, Takeo MUROGA, Masatoshi KONDO and Jiming CHEN, Plasma Fusion Res. 6, 2405121 (2011).