Community Research and Development Information Service - CORDIS

Abstract

The manufacturing process of ferritic oxide dispersion-strengthened (ODS) tubular components results in anisotropic mechanical behaviour, such that an anisotropy assessment must be made before design and construction procedures for high temperature heat exchangers can be fully implemented. In obtaining this assessment, internal pressure creep testing needs to be performed, which in turn necessitates sealing the tube with pressure retaining end features. As ODS alloys are difficult to join by conventional techniques, this paper describes the developments made in obtaining diffusionally bonded tube seals, and their subsequent incorporation into tubular creep specimens. Tubes successfully bonded have been tested under internal pressures at 1100 C and the resulting bonded microstructures, hoop strengths and failure modes are described in detail.

Additional information

Authors: REES M, JRC Ispra (IT);HURST R C, JRC Ispra (IT);PARKER J D, Swansea University, Department of Materials Engineering (GB)
Bibliographic Reference: Paper presented: Fifth Creep and Fracture of Engineering Materials and Structures, Swansea (GB), March 28 - April 2, 1993
Availability: Available from (1) as Paper EN 37348 ORA
Record Number: 199310488 / Last updated on: 1994-11-29
Category: PUBLICATION
Original language: en
Available languages: en