Title: In-sodium self-welding susceptibility evaluation of chromium-plated 2.25Cr-1Mo steel with Inconel 82 weld metal

Authors: Hemant Kumar, S.K. Albert, V. Ramakrishnan, C. Meikandamurthy, R. Vijayashree, A.K. Bhaduri

Addresses: Materials Joining Section, Materials Technology Division, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, India. ' Materials Joining Section, Materials Technology Division, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, India. ' Sodium Facilities Division, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, India. ' Sodium Facilities Division, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, India. ' Reactor Components Division, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, India. ' Materials Joining Section, Materials Technology Division, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, India

Abstract: The self-welding susceptibility of Cr-plated 2.25Cr-1Mo steel with Inconel 82 weld metal, with and without Cr-plating, has been evaluated in flowing sodium at 823 K for three and six months under contact stress of 3.0 MPa. Tests were performed on flat-on-flat geometry of hollow cylindrical specimens under compression. No self-welding was observed in either test for either material combination. Scanning electron micrographs of the tested specimens showed no damage in the surface. The paper discusses the experimental set-up and the results of self-welding susceptibility studies on these material combinations.

Keywords: self-welding susceptibility; flowing sodium; chromium plating; 2.25Cr-1Mo steel; Inconel 82 weld metal; susceptibility evaluation; contact stress; diffusion welding; adhesion welding; India; fast breeder reactors; protoype FBR; PFBR; diverse safety rods; DSR drive mechanism; DSRDM; electromagnets; nuclear energy; nuclear power; nuclear technology.

DOI: 10.1504/IJNEST.2007.017079

International Journal of Nuclear Energy Science and Technology, 2007 Vol.3 No.4, pp.386 - 398

Published online: 06 Feb 2008 *

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