Weldability Characteristics of Oxide Dispersion Strengthened Alloys: An Overview

Kalyan Chitrada, Ramprashad Prabhakaran, Jiye Wang, Larry Zirker, Mitchell Meyer, James Cole, Korukonda Murty, Rajiv Mishra, Darryl Butt, Megan Frary, Indrajit Charit

Research output: Contribution to conferencePresentation

Abstract

Oxide dispersion strengthened (ODS) alloys are considered an important class of structural materials for various high temperature applications including advanced nuclear reactors. Conventional fusion welding methods lead to high porosity and agglomerated oxide particles in these alloys deteriorating critical properties of the joint. That is why solid state joining techniques are touted as the potential remedy for the welding issues encountered in these alloys. Research activities in an ongoing research program supported by the DOE (grant # DEFG07-08ID14925) are highlighted. In this program, friction stir welding and pressure resistance welding have been used to successfully weld various ODS alloys, such as MA956, MA957 and MA754. Microstructural characteristics of the welded alloys are studied using a host of microscopy techniques. Mechanical properties are evaluated using microhardness, miniaturized tensile and shear punch test techniques. Appropriate microstructure-property correlations are developed. An overview of the state-of-the-art based on the published literature is also presented.

Original languageAmerican English
StatePublished - Feb 2010
EventTMS 2010 139th Annual Meeting & Exhibition -
Duration: 1 Feb 2010 → …

Conference

ConferenceTMS 2010 139th Annual Meeting & Exhibition
Period1/02/10 → …

EGS Disciplines

  • Materials Science and Engineering

Fingerprint

Dive into the research topics of 'Weldability Characteristics of Oxide Dispersion Strengthened Alloys: An Overview'. Together they form a unique fingerprint.

Cite this